Technical Manual and Specifications Type A2 Biosafety Cabinets Models 34300xx 34308xx 34400xx 34408xx 34500xx 34508xx 34600xx 34608xx Type B2 Biosafety Cabinets Models 34410xx 34610xx Cell Type A2 Biosafety Cabinets Models 34309 34409 34509 34609 Type B2 Biosafety Cabinets Models 34410xx 34610xx PURICARE Procedure Station Models 34800xx 34802xx 34810xx 34812xx Labconco Corporation 8811 Prospect Avenue Kansas City, MO 64132-2696 800-821-5525, 816-333-8811 FAX 816-363-0130 E-MAIL labconco@la
Labconco Training Programs: In order to assist technicians gain a better understanding of our products, Labconco Corporation offers Training Seminars at our Kansas City Facility on a regular basis. For further details about these training programs, contact Labconco's Product Service Department at 800-821-5525, or (816) 333-8811 from 7:30 a.m. to 5:30 p.m. C.S.T. Additional Copies: Additional copies of this document can be downloaded from Labconco’s website at www.labconco.com.
Table of Contents Introduction Contacting Labconco 3-9 10 10 Section One – Background Information Accessing the Certifier’s Menu Adjusting the Blower Speed & Filter Gauge (A2) Adjusting the Blower Speed, Filter Gauge & Airflow Sensor (A2) 11 12 13 Adjusting the Blower Speed, Filter Gauge, Airflow Sensor & Alarm Setpoint (B2) 14 Logic Filter Life Gauge Operation and Resetting for Local Conditions 15 QuickCharts Logic Type A2 Purifiers 16-19 Logic Type B2 20-23 PuriCare Procedure Stations 24-27 Identifying
Section Four – Initial Operation of the Logic System Reset Switch The Logic Information Center Layout Status Area Data Area – Icon Area Operating the Sliding Sash Starting the Logic The Logic Touchpad Logic Menu Instructions User Selectable Features Timer Operation Interval Timer Operation / Stopwatch Timer Operation Menu Options UV Lamp Operation Smart-Starttm Manual Touchpad UV Lamp Timer Interval Continuous UV Lamp Maintenance UV Lamp Hourmeter Change UV Lamp Life Reset UV Lamp Clock Light Operation Smar
Section Five – Certification Procedures for the Type A2 Logic Accessing the Certifier’s Menu Adjusting the Blower Speed Adjusting the Filter Gauge Adjusting the Optional Inflow and Downflow Values HEPA Filter Leak Test If the Logic is contaminated If the Logic is uncontaminated Downflow Velocity Inflow Velocity Primary Inflow Method Secondary Inflow Method Work Area Air Cleanliness Test (optional) Fluorescent Light Level (optional) Noise Level (optional) Vibration (optional) UV intensity (optional) Ground F
Section Seven – Type A2 Logic Service Operations Recommended Tools for Service External Dress Components Front Dress Panel Removal and Installation Side Panel Removal Side Panel Installation Corner Post Lower Trim Sash Operation Adjustment Sash Position Switches Sash Closure Position Switch Sash Operating Position Switch Sash Cable Retainer Exhaust Damper Adjustment Exhaust Damper Seal Installation HEPA Filter Replacement Exhaust HEPA Filter Replacement Supply HEPA Filter Replacement Motor/Blower Replacemen
Section Eight – Type B2 Logic Service Operations Recommended Tools for Service External Dress Components Front Dress Panel Removal and Installation Side Panel Removal Side Panel Installation Corner Post Lower Trim Sash Operation Adjustment Sash Position Switches Sash Closure Position Switch Sash Operating Position Switch Sash Cable Retainer Exhaust Damper Adjustment Prefilter Replacement HEPA Filter Replacement Exhaust HEPA Filter Replacement Supply HEPA Filter Replacement Motor/Blower Replacement Work Surf
Section Nine - Electrical System Service Operations Fluorescent Lamp Lamp Identification Changing the Fluorescent Lamp Lamp Socket Replacement Optional Ultraviolet Lamp Lamp Identification UV Lamp Specifications Changing the UV Lamp Lamp Socket Replacement Electronics Module Access Electronic Module Component Identification Circuit Breaker Resetting a circuit breaker Circuit Breaker Specifications Testing a Circuit Breaker Replacing a circuit breaker Power Supply and Relay Board Service Operations Fuse Test
Section Ten – Accessories Canopy Connection Air Flow Sensor Canopy Air Flow Sensor Service Fixture Kit U.V. Lamp Kit I.V.
INTRODUCTION This text is designed for you, the Biohazard Cabinet Certifier. Based on your suggestions, comments, and ideas, Labconco has compiled this information for you to use in the certification or servicing of our Purifier Logic Biosafety Cabinets. When you use this document in your office or in the field, we would appreciate your input so that we can make further improvements to future editions.
SECTION ONE – Background Information ACCESSING THE CERTIFIER’S MENU 0% 100% Filter Remaining 90% Pressing the ‘MENU’ key will c ycle the display between operation and menu For More Options To Choose, OK to Select, MENU to Escape 4. Light Operation 5. Light Timer 6. Light Maintenance 7. Blower Operation 8. Cabinet Set Up Press the or keys until Option # 6‘Calibration’ is highlighted. Press ‘OK’. Main Menu To Choose, OK to Select, MENU to Escape 1. UV Lamp Operation 2. UV Lamp Tim er 3.
ADJUSTING THE BLOWER SPEED & FILTER GAUGE Type A2 without airflow sensor CERTIFIER USE ONLY Calibration mode: Motor Speed Factor: wait 80 900 950 UP/DOWN TO CHANGE, OK TO NEXT, MENU TO LAST Press the or keys to adjust the blower speed. The word ‘wait’ will flash until the blower speed stabilizes. Press ‘OK’ to ac cept the new setting. CERTIFIER USE ONLY Calibration mode: Filter setup: 1. New Filter 2. Filter Not Changed UP/DOWN TO CHANGE, OK TO NEXT, MENU TO LAST Press the or keys to select.
ADJUSTING THE BLOWER SPEED, FILTER GAUGE AND AIRFLOW SENSOR Type A2 with airflow sensor CERTIFIER USE ONLY Calibration mode: Motor Speed Fac tor: wait 80 900 950 UP/DOWN TO CHANGE, OK TO NEXT, MENU TO LAST Press the or keys to adjust the blower speed. The word ‘wait’ will flash until the blower speed stabilizes. Press ‘OK’ to ac cept the new setting. CERTIFIER USE ONLY Calibration mode: Filter setup: 1. New Filter 2.
ADJUSTING THE BLOWER SPEED, FILTER GAUGE, AIRFLOW SENSOR AND ALARM SETPOINT Type B2 CERTIFIER USE ONLY Calibration mode: Motor Speed Fac tor: wait 80 900 950 UP/DOWN TO CHANGE, OK TO NEXT, MENU TO LAST Press the or keys to adjust the blower speed. The word ‘wait’ will flash until the blower speed stabilizes. Press ‘OK’ to ac cept the new setting. CERTIFIER USE ONLY Calibration mode: Filter setup: 1. New Filter 2.
Logic Filter Life Gauge Operation and Resetting for Local Conditions The filter life gauge calculates the remaining filter life by measuring and comparing the current motor speed to the initial speed noted at the factory during assembly, and the calculated maximum motor speed, using the formula: 100-(100x (current speed-original speed) ) = % filter life left max. speed-original speed So anything that changes the motor’s current speed, like: 9 Blocking the grille. 9 Raising the air temperature.
QuickChart - Logic Type A2 Biohazard Cabinets Model Type Cabinet Size (in feet) Sash Opening (inches) Starting Serial # HEPA Filter Leak Test Data Air Displacement (CFM) Laskin Nozzles needed Theoretical aerosol conc. (ug/l)1 Actual aerosol conc. (ug/l)2 Nominal Speed Control Setting Downflow Data Nominal Avg.
QuickChart - Logic Type A2 Biohazard Cabinets (cont) Exhaust HEPA Data Width (inches) Depth (inches) Height (inches)6 Performance (CFM) Performance (Pressure in. H2O) Labconco P/N Filtration Group P/N AAF P/N Motor/Blower Data Labconco P/N7 Motor HP Blower Size (inches) Nominal Speed Control Setting Fluorescent Lamp Data Fluorescent Lamps (2 each) Fluor. Lamp Labconco Part # Fluor. Ballast Labconco Part # Fluor.
QuickChart - Logic Type A2 Biohazard Cabinets footnotes Logic Model Identification 9 The primary serial tag is on the lower outside edge of the right corner post. 9 The secondary serial tag is located on the front of the electronics module on the top right side of the cabinet. 9 The first two digits of the serial number are the year of production; the next two are the month. The next 5 digits are the sequence of production, and the letter following the serial number is the revision level of the cabinet.
Canopy Specifications 8. The 1st generation canopy was manufactured from 2007 to mid-2009. It is characterized by thin slots on both the front and back of the connection, no sealing gasket on the bottom, and no relief valve on the side wall(s) of the canopy. The canopy operating specifications are established by measuring the inflow volume of the Logic, and the total system exhaust volume. 9. The 2nd generation canopy was introduced in mid-2009.
QuickChart - Logic Type B2 Biohazard Cabinets Model Type Cabinet Size (in feet) Sash Opening (inches) Starting Serial # Downflow Data Nominal Avg. Downflow (FPM) Downflow test grid # of points Test Grid (# rows x # columns) Test Grid Data (in inches) Grid distance from back & sides Distance between rows Distance between columns Inflow Data Nominal Average Inflow (FPM) Sash Open Area (Sq. Ft) Nominal Avg. Inflow Vol. (CFM) Avg. Inflow Vol.
QuickChart - Logic Type B2 Biohazard Cabinets (cont) Exhaust HEPA Filter Leak Test Data Air Displacement (CFM) Laskin Nozzles needed Theoretical aerosol conc. (ug/l)1 Actual aerosol conc. (ug/l)2 Exhaust HEPA Data Width (inches) Depth (inches) Height (inches)10 Performance (CFM) Performance (Pressure in. H2O) Labconco P/N Filtration Group P/N AAF P/N Motor/Blower Data Labconco P/N11 Motor HP Blower Size (inches) Nominal Speed Control Setting Fluorescent Lamp Data Fluorescent Lamps (2 each) Fluor.
QuickChart - Logic Type B2 Biohazard Cabinets footnotes Logic Model Identification 9 The primary serial tag is on the lower outside edge of the right corner post. 9 The secondary serial tag is located on the front of the electronics module on the top right side of the cabinet. 9 The first two digits of the serial number are the year of production; the next two are the month. The next 5 digits are the sequence of production, and the letter following the serial number is the revision level of the cabinet.
QuickChart - Logic Type B2 Biohazard Cabinets Footnotes, Continued UV lamp Specifications 9 For all models, the UV lamp number is G30T8. The Labconco part number is 1271300. 9 For all 115/230 VAC models, the ballast assembly is Labconco part number 3829901. The ballast is Robertson part number PSM2GPH18MVW. 9 For all 100 VAC models, the ballast assembly is Labconco part number 3830600. The ballast is Robertson part number RSO1GPH30100.
QuickChart – PuriCare Procedure Stations Model Type Cabinet Size (in feet) Sash Opening (inches) Starting Serial # HEPA Filter Leak Test Data Air Displacement (CFM) Laskin Nozzles needed Theoretical aerosol conc. (ug/l)1 Actual aerosol conc. (ug/l)2 Nominal Speed Control Setting Downflow Data Nominal Avg.
QuickChart – PuriCare Procedure Stations (cont) Exhaust HEPA Data Width (inches) Depth (inches) Height (inches)6 Performance (CFM) Performance (Pressure in. H2O) Labconco P/N Filtration Group P/N AAF P/N 34800 26 18 5.88 353 .23-.37 3838501 42547L 907-543206 34802 26 18 5.88 353 .23-.37 3838501 42547L 907-543206 34512 36 18 5.88 441 .23-.37 3838502 42673L 907-543207 34810 48 18 5.88 529 .23-.37 3838503 41727L 907-543208 34812 48 18 5.88 529 .23-.
QuickChart – PuriCare Procedure Station footnotes Logic Model Identification 9 The primary serial tag is on the lower outside edge of the right corner post. 9 The secondary serial tag is located on the front of the electronics module on the top right side of the cabinet. 9 The first two digits of the serial number are the year of production; the next two are the month. The next 5 digits are the sequence of production, and the letter following the serial number is the revision level of the cabinet.
9. The 2nd generation canopy was introduced in mid-2009. It is characterized by a single wide slot on the front of the connection, a black foam sealing gasket on the bottom, and 1 or 2 relief valve(s) on the side walls of the canopy. The canopy operating specifications are established by measuring the inflow volume of the Logic, and the inflow velocity at the slot of the canopy. 10. The average inflow slot velocity of the canopy is measured at the three spots, all on horizontal centerline of the slot.
IDENTIFYING LOGIC MODELS The Logic platform Biosafety Cabinet can be identified readily by several external features, as shown in Figure 1-1: • • • Model number beginning with 34xxx-xx Touchpad on the right corner post and an airflow graphic on the left corner post. When the system reset switch is turned off and then on, the Logic logo appears briefly on the LCD screen, as shown in Figure 1-2.
SERIAL NUMBER TAGS The model/serial number tag is located on the bottom outside edge of the right corner post. A second tag is located on the front of the electronics module on the top of the unit. This tag includes the unit’s operating voltage and amperage. The model and serial numbers of each unit are also recorded on the unit test report attached beneath the front dress panel.
LOGIC MODEL NUMBERING SYSTEM Purifiers are assigned their respective model numbers, based on their configuration and the options they are equipped with. The first five digits define the unit's configuration, while the last two are assigned based on the unit's options.
Final Inspection and Test Report Form A copy of the Final Inspection Test Report is attached to the blower plenum cover, beneath the front dress panel. The report contains initial setup information on inflow and downflow velocities, and the initial blower torque setting.
Section Two – Theory of Operation This section offers a brief overview of the theory of operation of the Logic. Airflow Patterns Figure 2-1 All Logic Type A2 cabinets meet the airflow requirements of ANSI/NSF Standard 49:2007. Approximately 55-60% of the air in the cabinet is filtered and recirculated, while 40-45% is filtered and exhausted. ALL Logics feature intrinsically safe designs, jacketing contaminated positive pressure areas with negative pressure zones.
ECM Motor The modern Class II Biosafety Cabinet was developed in the early 1960’s as a result of the increased availability of High Efficiency Particulate Air (HEPA) filter technology. The motor of choice at the time to drive the cabinet’s blower was the Permanent Split Capacitor (PSC) type. At the time, the PSC motor offered manufacturers an inexpensive power source whose speed could be electronically controlled to allow for airflow adjustment as the HEPA filter(s) loaded.
destroy a PSC motor. Given enough microprocessor memory and power, the manufacturer can program in any number of user-selected programs controlling motor speed, power and even direction of rotation. The ultimate expression of the power of the ECM was the development of the constant volume algorithm, by General Electric, and used in the Logic BSC. By testing a prototype model to a variety of airflows and filter pressures, the motor/blower can be “characterized” for that size cabinet.
The Logic has five circuit boards. The ECM microprocessor and power supply boards, located in the end of the ECM, the control board on the right side wall, shown in Figure 2-5, and the relay board and the power supply board assembly, located in the electronics module, as shown in Figure 2-6.
Section Three – Installation Requirements and Setup Procedures This section offers an overview of site requirements and how to prepare the unit for operation. Space Requirements The dimensions for the different models are shown in Section 11: Miscellaneous. Clearance Logics not connected to an exhaust system should have at least six inches (150 mm) clearance from any overhead obstructions when the cabinet is in its final operating position, to allow for testing of the Exhaust HEPA filter.
Exhaust Requirements If the customer intends to connect the Purifier to the optional canopy connection kit, first examine the location to ensure that it is compatible with the cabinet’s exhaust duct. The area directly above the cabinet’s exhaust port should be clear of structural elements, water and utility lines, or other fixed obstructions. There should be enough clearance to allow for the passage of a 10" diameter duct.
Service Line Requirements All service lines to the Purifier should be ¼ inch outside diameter, metal, and equipped with an easily accessible shut-off valve, should disconnection be required. If the service line pressure exceeds 100 PSI, it must be equipped with a pressure regulator to reduce the line pressure. Connecting Service Valves to Flammable Materials Note: The use of flammable gases or solvents should be avoided in the Purifier.
Removing the Logic from its pallet Please refer to Figures 3-2a, b & c.
Figure 3-2c Installing the Purifier on an Existing Work Surface Note: The Purifier is very top heavy. Use caution when lifting or moving it. Note: The Purifiers weigh from 400 to 700 pounds. Always use safe lifting practices when picking it up. When installing the Purifier onto an existing work surface or benchtop, ensure that the structure can safely support the combined weight of the cabinet and any related equipment.
Telescoping Base Stands These stands are available with either fixed feet or casters. The height of these stands is set before installation of the Logic. The height can be set at 27.5 to 33.5 inches in 1inch intervals, providing a work surface height of 30.0 to 36.0 inches. The Base Stands for each Logic model are listed in Table 3-2 below. Table 3-2 3' Base Stand w/Feet Model # 3730300 Base Stand w/wheels Model # 3730310 4' 3730400 3730410 5' 3830500 3830510 6' 3730600 3730610 Width 1.
3. Move the base stand into its final location. Using a carpenter’s level, adjust each leveling foot until the stand is level in both planes as shown in Figure 3-4. You are now ready to lift the Purifier onto its stand. Figure 3-4 Manual or Electric Hydraulic Lift Base Stands These base stands offer infinitely adjustable height between 25.5 and 33.5 inches, giving a work surface height of 28.0 to 36.0 inches.
Connecting the Purifier to Service Lines The service lines (if any) should be connected to the tube fitting(s) on the outside of the liner wall as shown in Figure 3-5. To install the tubing, follow these steps: 1. Ensure that the tubing is ¼ inch outside diameter, soft metal, and that the end has been deburred completely. 2. Route the tubing from the rear of the cabinet, ensuring that it will line up with the slot in the back of the side panel.
Type A2 Optional Exhaust System Connections Unless specially modified by Labconco at the customer’s request, all Type A2 Purifier Logic Series Biosafety Cabinets are shipped to recirculate their HEPA filtered exhaust air back into the laboratory. Certain applications such as working with odorous products or volatile toxic materials will require the connection of the Purifier to an exhaust system.
Drain Valve Installation (optional) In order to prevent damage during shipping, the drain valve assembly has not been installed in the unit. If desired, the valve should be installed after the unit is in its final location. To install the valve assembly, follow these steps: Note: The work surface is heavy. Use caution when handling it. 1. Lift the work surface out of the Purifier by lifting on the knobs at the front of the work surface. Steady the work surface while pulling it straight out of the cabinet.
Section 4 Initial Operation of the Logic This section will take you through the steps to begin initial operation of the Logic, with an explanation the controls, display and options, in order to prepare the unit for its initial certification. System Reset Switch The Purifier has a system reset switch for resetting the unit’s microprocessors. The switch is located on the front of the electronics module, on top of the unit, as shown in Figure 4-1.
The Logic Information Center Layout The Purifier's Information Center is an LCD display located on the right side wall at eye level. The center’s display is divided into three separate areas, as shown in Figure 4-2, below. Figure 4-2 Status Area Data Area Icon Area Status Area The Status area displays the system status during operation. This line can display any of the following messages: OK The motor is operating properly, and the sash is not open too far.
Data Area The Data Area displays the Filter Gauge. This bar graph displays the remaining filter life in percent. When the cabinet is new, or after the HEPA filters are replaced, the graph will be full, or display 100%. As the filters load, or if the grille or exhaust discharge are blocked, the bar graph will show a reduced filter life. The graph is user-selectable as a bar graph with percentage displayed, a bar graph only, or a semi-circular graph showing filter life remaining.
Operating the Sliding Sash The Purifier's counterbalanced, anti-racking sash mechanism requires only a few pounds of force to move the sash up or down. You can open or close the sash smoothly with one or two hands positioned on either handle. The sash position alarm and safety interlock system senses the sash position and acts appropriately. The Purifier is designed to operate with either an 8- or 10-inch sash opening, depending on model.
The Logic Touchpad The touchpad of the Logic is shown in Figure 4-4. Take a moment to get familiar with the buttons, their location and function. Also familiarize yourself with the display located on the right side wall. The display will report system operation, such as optional inflow and downflow velocities, timer displays, alarm or error messages, as well as icons that illuminate when that part of the Purifier is operational (UV light or blower, for example).
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User Selectable Features The Purifier Logic Series Biosafety Cabinet offers the user unparalleled flexibility and convenience. The operation of the blower, fluorescent and UV lights can either be operated manually, or you may choose to use the Smart-Start™ or Night-Smart™ features that activate functions automatically when the sash is opened or closed. The UV lamp can be programmed to operate for a given time interval when the sash is closed, before it shuts off.
Interval Timer Operation 1. When selected, the Interval Timer menu is displayed on the LCD. The timer defaults to 0:00:00. 2. Press and hold the “▲” or “▼” buttons to increase or decrease the timer interval. 3. When the proper interval is entered on the display, press the “OK” button to start the timer. 4. When the timer reaches 0:00:00, an audible alarm will sound, and the timer will reset itself and repeat the countdown. 5. Press the “OK” button to pause the timer. 6.
UV Lamp Timer The UV Lamp Timer allows you to decide whether the UV lamp will operate continuously or for a time period that you select. Interval When the “Interval” option is selected, the UV Interval Timer menu is displayed. UV Interval Timer This window lets you set the amount of time the UV lamp to stays lit when activated. Use the “▲” and “▼” buttons to select the amount of time you need, and then press the “OK” button to set the interval.
Light Operation This menu option allows you to select whether the fluorescent lights will turn on automatically every time the sash is opened. NOTE: The fluorescent lights will automatically turn off when the sash is closed, no matter what its setting is. Smart-Start When the “Smart-Start” option is selected, the fluorescent lights will turn on every time the sash is opened. Manual When the “manual touchpad” option is selected, the fluorescent lights must be turned on and off at the touchpad.
Light Hourmeter This display only shows the hours the fluorescent lamps have been lit and how many hours remain until you receive a warning to replace the lamps. Change Light Life In this option, you can set the hourmeter before you get the replace light warning. For most fluorescent lamps, the output of light decreases at a constant rate. Typically, after 6,000 hours of operation the lamp will output less light than it did when it was new.
Security Lock NOTE: The security lock automatically reactivates and locks out the keypad every time the blower is shut off, by the keypad or by closing the sash. After the initial auto diagnostic screen is cleared, the security lock reactivates. The security lock feature prevents operation of the Biosafety Cabinet by unauthorized users. To engage the security lock, access the Security Lock submenu, as described in the Logic Menu Instructions, Figure 4-5.
Restoring Software Default Settings To restore the default settings to their original configuration: 1. Access the Menu, and select “Cabinet Set Up”. Press “Mute/OK” 2. In the Cabinet Set Up submenu, select “Restore Defaults”. Press “Mute/OK” 3. Press “Mute/OK” again to restore the software defaults. Pressing “Menu” will escape this submenu without restoring the defaults. Table of Default Settings UV Lamp: Smart-Start, Continuous, Reset UV Lamp Hourmeter, Set UV Lamp Life to 6000 hours.
If An Airflow Alert Activates The most common causes of an airflow alert are: • Blockage of the inlet grilles or exhaust outlet. • Removal of the work surface or grille during operation. Note: If the alarm sounds during use, immediately take appropriate action to prevent contamination to you and other personnel in the area. Resetting the Airflow Alert System The Airflow Alert will automatically reset to normal operation once the motor speed has restabilized.
Section 5 Certification Procedures for the Type A2 Logic This section will outline test procedures to validate the performance of the Logic. Note: These are the only Labconco-approved test procedures for validating the performance of the Logic Biosafety Cabinet. Other test procedures may yield different or inaccurate test results. NOTE: In order to properly certify the Logic, you must obtain a Logic Certifier Kit, Labconco P/N 3858400.
Logic Filter Life Gauge Operation and Resetting for Local Conditions The filter life gauge calculates the remaining filter life by measuring and comparing the current motor speed to the initial speed noted at the factory during assembly, and the calculated maximum motor speed, using the formula: 100-(100x (current speed-original speed) ) = % filter life left max. speed-original speed So anything that changes the motor’s current speed, like: 9 Blocking the grille. 9 Raising the air temperature.
Adjusting the optional inflow and downflow values Note: This step is only available if the optional airflow sensor is installed. 1. Using the ▲ or ▼ buttons, increase or decrease the displayed inflow velocity until it matches the observed value, then press “Mute/OK” to confirm the value. The display will now change to downflow velocity calibration screen. 2.
Table 5-1 HEPA Filter Leak Test Specifications Model Air Displacement (CFM) Laskin Nozzles needed Calculated aerosol conc. (ug/l)1 Actual aerosol conc. (ug/l)2 Nominal Speed Control Setting 1. 2.
On Models Manufactured After April 2009 – 5. Remove the exhaust HEPA filter cover by loosening the four Phillips Screws on the sides of the cover, then pivot the front of the cover up, and then pull it forward as shown in Figure 5-2a. Figure 5-2a Pivot the front of the cover up and then pull it forward (dress panel removed for clarity only). Loosen these screws only Note: exercise caution when removing or installing the exhaust filter cover, to prevent damaging the Exhaust HEPA filter.
7. Lower the front edge of the diffuser until clears the bottom of the sash, and then pull the diffuser straight out of the cabinet, as shown in Figure 5-4. Figure 5-4 8. The Logic is now ready for the HEPA Filter Leak Test. Set the photometer sampling valve to “DOWNSTREAM”. Ensure there is a proper vacuum at the sampling port of the pistol. 9. Open the following number of Laskin nozzle(s): For all 3-foot Logic models – 1 nozzle For all 4-, 5- and 6-foot Logic models – 2 nozzles 10.
Acceptance Aerosol penetration shall not exceed 0.01%. Reassemble the unit by compressing the exhaust filter cover while installing its tabs back into the exhaust filter bracket slots. Reinstall the diffuser, ensuring that the holes in the back of the diffuser frame engage the posts on the rear wall of the work area, as shown in Figure 5-6. Figure 5-6 Diffuser pins engaging the holes in the rear of the diffuser.
If the Logic is Uncontaminated (Establishing an Upstream Concentration) The Purifier utilizes a unique aerosol access tube for sampling the upstream concentration of aerosol. If after reading these instructions, you have further questions, please contact Labconco's Product Service Department. Note: The access tube contains contaminated air under positive pressure. DO NOT access this line until the cabinet has been decontaminated. 1. Remove the work surface by lifting the handles on either end.
On Models Manufactured prior to April 2009 – 6. Remove the exhaust HEPA filter cover by lifting and compressing the cover until its tabs are clear of the exhaust filter bracket, as shown in Figure 5-8. Figure 5-8 Lift the center of the cover up while compressing the cover. Cover tabs in bracket slots Note: exercise caution when removing or installing the exhaust filter cover, to prevent damaging the Exhaust HEPA filter. On Models Manufactured After April 2009 – 7.
8. Remove the diffuser by raising the sash as high as it will go, and then removing the two acorn nuts with a 7/16” wrench or socket, as shown in Figure 5-9. Figure 5-9 Removing the diffuser acorn nuts (Dress panel and lamps removed for clarity only). Note: The diffuser acorn nuts are secured to the studs with a removable thread locking compound to prevent them from vibrating loose during shipment of the Logic. There may be some resistance the first time the nuts are removed; this is normal.
12. Switch the photometer sampling valve to upstream, and establish this aerosol concentration as 100%, per the photometer manufacturer’s instructions. 13. Establish the 0% concentration per the photometer maker’s instructions. 14. The Logic is now ready for the HEPA Filter Leak Test. Set the photometer sampling valve to “DOWNSTREAM”. Ensure there is a proper vacuum at the sampling port of the pistol. 12.
Downflow Velocities All Logic models are classified as having uniform downflow, and the average downflow velocity for all models is 55+/-5 FPM, tested as per ANSI/NSF Standard 49:2007. All readings should be in a plane 4 inches above the bottom edge of the sash, and the UV Lamp, IV bar and all other accessories must be removed before performing downflow test. The test grid dimensions are outlined in Table 5-2.
Figure 5-14 Acceptance Average downflow shall be 55 +/-5 FPM with all test points being within +/- 16 FPM. Inflow Velocity Calculation - Primary Method Note: The dress panel MUST be installed on the cabinet to obtain an accurate inflow value. The average inflow velocity for all Logics is 105 ±5 FPM, and should be determined by converting the inflow volume to the average inflow velocity. The inflow volume is measured directly by sealing a direct inflow measuring flowmeter to the face of the unit.
Inflow Velocity Calculation - Secondary Method If the primary method cannot be performed, the secondary inflow calculation method should be used. The secondary method uses a hot wire thermal anemometer. In this method, the sash is lowered, and a series of velocity readings are taken at the front of the unit. NOTE: You must use Labconco holder P/N 3836405 to perform this test properly.
Figure 5-16a & b The Sensor Distance, as described in Table 5-4, using the slots cut in the 6-foot template. 4.00-inch mark 3.25-inch mark The Sensor Distance, as described in Table 5-4, using a scale. Table 5-4 Secondary Inflow Test Specifications Model Restricted Sash Opening (inches)4 Sensor distance (inches)5 # of Test points Test point location Nominal Avg. Inflow Vel. (FPM) Avg. Inflow Vel. Range (FPM) Correction Factor (CF) Average Inflow Volume Range (AIV) (Avg.
3. Calculate the manufacturers recommended correction factor(s) to correct for local conditions of temperature, humidity, barometric pressure, altitude, etc. 4. Take a series of inflow velocities by placing the probe holder so that its center 5. 6. 7. 8. mark aligns with the marked test holes. As shown in Figure 5-18. Apply the wind tunnel correction and local condition correction factors to the thermal anemometer readings. Multiply the individual readings by the correction factor shown in Table 5-4.
Work Area Air Cleanliness Test (optional) If the customer wants to verify air cleanliness in the work area, use the following procedure: 1. Mark test points at the geometric center of the work surface, and midway between the center test point and each side wall. 2. Place a particle counter pickup a test point, at a height of 16 inches above the work surface, pointing into the airflow, as shown in Figure 5-19. Take three samples of 1.0 ft3. Repeat for each test point. 3. Average the results.
Fluorescent Light Level (optional) The fluorescent light intensity should be measured as described in ANSI/NSF Standard 49:2007, Annex F. NOTE: The light meter should be color- and cosign corrected for accurate readings. 1. Test points should be marked along the centerline of the work surface, starting 6 inches from the side wall, with subsequent points 12 inches apart until the center of the work surface is reached. Repeat for the other side of the work area. 2. Take background readings at the test.
Vibration (optional) The vibration level should be measured as described in ANSI/NSF Standard 49:2007. Note: The vibration meter should have a range of 20-20,000 Hz, and have an output in displacement. 1. Vibration level should be recorded from a single point, on the geometric center of the work surface. 2. Take a background reading with the cabinet blower off at the test point. 3. Start the cabinet blower, and take a vibration reading. Acceptance Vibration should be less than 0.
Ground Fault Circuit Interrupter (GFCI) Test (115/100 Volt models only) Note: The GFCI tester must be able to simulate a fault of 3mA. 1. Place the tester into any of the Logic’s outlets. The indicator lights of the tester should indicate normal function, and the GFCI’s indicator LED should be lit. 2. Press the test button of the tester. The indicator lights should now indicate the circuit is inactive, and the GFCI indicator LED should be off. 3.
Section 6 Certification Procedures for the Type B2 Logic This section will outline test procedures to validate the performance of the Logic Total Exhaust Biosafety Cabinet. Note: These are the only Labconco-approved test procedures for validating the performance of the Logic Biosafety Cabinet. Other test procedures may yield different or inaccurate test results. NOTE: In order to properly certify the Logic, you must obtain a Logic Certifier Kit, Labconco P/N 3858400.
Logic Filter Life Gauge Operation and Resetting for Local Conditions The filter life gauge calculates the remaining filter life by measuring and comparing the current motor speed to the initial speed noted at the factory during assembly, and the calculated maximum motor speed, using the formula: 100-(100x (current speed-original speed) ) = % filter life left max. speed-original speed So anything that changes the motor’s current speed, like: 9 Blocking the grille. 9 Raising the air temperature.
*Adjusting the alarm setpoint velocity 1. Close the exhaust damper until the exhaust volume equals 80% of the nominal volume. Press ‘OK’ to accept the alarm volume. 2. Reopen the exhaust damper to its normal position. This step only applies to units with Firmware version G or later. Supply HEPA Filter Leak Test All Logic models were tested to the HEPA Filter Leak Test as described in ANSI/NSF Standard 49:2007.
2. Locate the access tube on right side of the rear plenum wall, passing through the towel catch. As shown in Figure 6-2. Figure 6-2 3. Pull the tube toward the front of the unit. Remove the access tube cover. 4. Using an appropriate photometer, connect the unit's upstream line to the access tube. Note: Keep the photometer sampling tube as short as possible. It should never exceed 6 feet maximum. 5. Turn on the photometer and allow it to operate for a minimum of 5 minutes.
1. Turn on the photometer and allow it to operate for a minimum of 5 minutes. Leave the valve in the “CLEAR” setting. 2. Check the oil level of the generator – it must be within 1/8” of the level line when the generator is sitting level. 3. Establish the 100% and 0% concentration levels for the photometer. Preparing the Logic for Supply HEPA Filter Leak Testing 1.
3. The Logic is now ready for the Supply HEPA Filter Leak Test. Set the photometer sampling valve to “DOWNSTREAM”. Ensure there is a proper vacuum at the sampling port of the pistol. 4. Open one Laskin nozzle. 5. Ensure the pressure gauge on the generator is reading 20 +/- 1 PSIG. 6.
Exhaust HEPA Filter Leak Test All Logic models were tested to the HEPA Filter Leak Test as described in ANSI/NSF Standard 49:2007. Note: ensure all internal surfaces of the Logic have been appropriately decontaminated before proceeding. Note: If so equipped, the prefilter element on the towel catch should be removed, and the aerosol generator should be placed nearby to inject the aerosol as shown in Figure 6-6.
4. Locate a sampling port downstream of the exhaust HEPA filter. The sampling port should ideally be at least 10 duct diameters from any elbow and 10 duct diameters downstream of the filter. 5. The Logic is now ready for the Exhaust HEPA Filter Leak Test. Set the photometer sampling valve to “DOWNSTREAM”. Ensure there is a proper vacuum at the sampling tube. 6. Open the Laskin nozzle(s). 7. Ensure the pressure gauge on the generator is reading 20 +/- 1 PSIG. 8.
Downflow Velocities All Logic models are classified as having uniform downflow, and the average downflow velocity for all models is 55+/-5 FPM, tested as per ANSI/NSF Standard 49:2007. All readings should be in a plane 4 inches above the bottom edge of the sash, and the UV Lamp, IV bar and all other accessories must be removed before performing downflow test. The test grid dimensions are outlined in Table 6-3.
Figure 6-8 Acceptance Average downflow shall be 55 +/-5 FPM with all test points being within +/- 16 FPM. Inflow Velocity Calculation - Primary Method Note: The dress panel MUST be installed on the cabinet to obtain an accurate inflow value. The average inflow velocity for all Logics is 105 ±5 FPM, and should be determined by converting the inflow volume to the average inflow velocity. The inflow volume is measured directly by sealing a direct inflow measuring (DIM) flowmeter to the face of the unit.
Inflow Velocity Calculation - Secondary Method If the primary method cannot be performed, the secondary inflow calculation method should be used. The secondary method uses a hot wire thermal anemometer. In this method, the sash is lowered, and a series of velocity readings are taken at the front of the unit. NOTE: You must use Labconco holder P/N 3836405 to perform this test properly. Qualified certifiers can obtain this holder as part of the Logic Certifier Kit.
Figure 6-10a & b The Sensor Distance, as described in Table 6-5, using the slots cut in the 6-foot template. 4.00-inch mark 3.25-inch mark The Sensor Distance, as described in Table 6-5, using a scale. Table 6-5 Secondary Inflow Test Specifications Model Restricted Sash Opening (inches)2 Sensor distance (inches)3 # of Test points Test point location Nominal Avg. Inflow Vel. (FPM) Avg. Inflow Vel. Range (FPM) Correction Factor (CF) Average Inflow Volume Range (AIV) (Avg.
3. 4. 5. 6. 7. 8. with its performance in a calibrated wind tunnel. This data should be available from the calibrator of the thermal anemometer. Calculate the manufacturers recommended correction factor(s) to correct for local conditions of temperature, humidity, barometric pressure, altitude, etc. Take a series of inflow velocities by placing the probe holder so that its center mark aligns with the marked test holes. As shown in Figure 6-12.
Total Exhaust Volume The total volume of air exhausting from the cabinet can be determined as follows: Note: The dress panel MUST be installed on the cabinet to obtain an accurate inflow value. Note: The exhaust volume noted with a DIM on the front of the cabinet may not agree with the value obtained from a traditional Pitot tube or thermal anemometer traverse reading of the exhaust duct. 1. Shut off the cabinet blower. 2. Remove the prefilter element from the top of the cabinet. 3.
Work Area Air Cleanliness Test (optional) If the customer wants to verify air cleanliness in the work area, use the following procedure: 1. Mark test points at the geometric center of the work surface, and midway between the center test point and each side wall. 2. Place a particle counter pickup a test point, at a height of 16 inches above the work surface, pointing into the airflow, as shown in Figure 6-13. Take three samples of 1.0 ft3. Repeat for each test point. 3. Average the results.
Fluorescent Light Level (optional) The fluorescent light intensity should be measured as described in ANSI/NSF Standard 49:2007, Annex F. NOTE: The light meter should be color- and cosign corrected for accurate readings. 5. Test points should be marked along the centerline of the work surface, starting 6 inches from the side wall, with subsequent points 12 inches apart until the center of the work surface is reached. Repeat for the other side of the work area. 6. Take background readings at the test.
Vibration (optional) The vibration level should be measured as described in ANSI/NSF Standard 49:2007. Note: The vibration meter should have a range of 20-20,000 Hz, and have an output in displacement. 1. Vibration level should be recorded from a single point, on the geometric center of the work surface. 2. Take a background reading with the cabinet blower off at the test point. 3. Start the cabinet blower, and take a vibration reading. Acceptance Vibration should be less than 0.
Ground Fault Circuit Interrupter (GFCI) Test (115/100 Volt models only) Note: The GFCI tester must be able to simulate a fault of 3mA. 1. Place the tester into any of the Logic’s outlets. The indicator lights of the tester should indicate normal function, and the GFCI’s indicator LED should be lit. 2. Press the test button of the tester. The indicator lights should now indicate the circuit is inactive, and the GFCI indicator LED should be off. 3.
Section Seven – Purifier Type A2 Logic Service Operations This section will review the tools needed, and common service operations for the Logic.
Figure 7-2 To reinstall the panel, reverse these steps, ensuring that the plastic pin in the top corners of the dress panel properly engage the corner posts. Side Panel Removal Note: The side panel(s) must be taken off to remove the Logic from its pallet. 1. Remove and save the two Phillips screws on the front edge of the side panel. 2. Pivot the front of the panel away from the cabinet.
Corner Post Lower Trim The corner post lower trim pieces are secured by two 1/4-inch hex screws. When properly positioned, the bottom edge of the rubber washer on the screws should contact the chassis of the Logic. To adjust the trim piece, loosen both screws, reposition the trim piece, and then tighten the hex screws. See Figure 7-3. Figure 7-3 Using a ¼-inch wrench to adjust the corner post screws Note: DO NOT over tighten the screws; damage to the trim piece may occur.
Sash Operation The Logic sash uses a deadweight-counterbalanced system. The system consists of two separate weights on either side of the liner. Both weights are synchronized by a locked axle-pulley system. Both pulleys are fixed to the axle so that both weights must move together, preventing the sash from racking. Adjustment There are no adjustments for the width of the sash track. There should be approximately 1/8-inch lateral play of the sash in its track.
Sash Position Switches Two microswitches are used to indicate the sash position. The switches are the same, Labconco part # 3832400. A photo of both switches is shown in Figure 7-6. Figure 7-6 Sash Closure Position Switch Sash Operating Position Switch Sash Closure Position Switch The sash closure position switch signals the display microprocessor that the sash is open or closed allowing proper operation of the Blower, fluorescent or UV lights. It is wired in the normally open configuration.
Figure 7-7 Sash Closure Position Switch properly actuated against the sash weight Figure 7-8 Sash Operating Position Switch properly actuated against the sash weight Page 106 of 197
Sash Cable Retainer The sash cable retainers are located at the top of each sash pulley, as shown in Figure 7-9. If the retainer needs adjustment, Use a 3/8-inch wrench to loosen the bolt securing the retainer and adjust it until it contacts the pulley. Retighten the bolt. Figure 7-9 Exhaust Damper Adjustment The exhaust damper adjustment bolt is located on the left side of the blower plenum cover, in the center of the orange damper bolt seal.
Exhaust Damper Seal Installation The exhaust damper seal is a silicone seal, permanently bolted to the plenum inside the cabinet. CAUTION: The damper seal is permanently attached to the plenum in the cabinet. NEVER attempt to pull the seal out of the cabinet; the seal will be damaged or destroyed. CAUTION: The inside surface of the damper seal may be contaminated. DO NOT disrupt the seal until the cabinet has been properly decontaminated. Installing the seal 1.
6. When the entire seal has been “set”, run a finger around the edge of the seal to ensure it is properly oriented, as shown in Figure 7-13. Figure 7-13 HEPA Filter Replacement CAUTION: The cabinet must be properly decontaminated before servicing the supply HEPA filter. Following replacement of a HEPA filter, the cabinet must be recertified. CAUTION: Always remove the exhaust HEPA filter first. The exhaust filter pan or plenum can be damaged if the plenum is raised with the Exhaust HEPA filter in place.
Figure 7-14 Figure 7-15 5. Remove the last two screws. Gently rock the cover, slide it to the left or right, and swing it out and away from the unit. NOTE: During disassembly, the blower plenum cover can rest on the center sash support, as shown in Figure 7-16, to allow repositioning of the panel or your grip on it.
6. Using a 1/2 -inch socket or wrench, loosen the four exhaust filter sealing bolts located at each corner of the exhaust filter tray, as shown in Figure 7-17, at least 1/2 inch. This releases the exhaust HEPA filter from the cabinet. Figure 7-17 Exhaust HEPA Filter bolts (2 per each side) 7. Pull the exhaust HEPA filter straight out of the cabinet. To Remove the Exhaust HEPA Filter on 3-foot models: 1. Follow steps 1-5 as above. 2.
Figure 7-19 Figure 7-20 Figure 7-21 Plenum sealing edges (inside the exhaust filter pan on all 4 sides) Page 112 of 197
To Remove the Supply HEPA Filter: 1. With the exhaust filter removed, use a 1/2-inch socket or wrench to tighten the three plenum lift bolts located as noted in Figure 7-22. This will lift the plenum off of the supply HEPA filter. Remove the Supply HEPA filter retainers on the front of the plenum. 2. Slide the supply HEPA filter straight out the unit. 3. With the HEPA filters removed, inspect the filter shelf and the exhaust filter tray for damage.
4. Sequentially tighten the four exhaust filter sealing bolts located at each corner of the exhaust filter tray until the exhaust filter gasket is compressed no more than 50%. The exhaust filter sealing bolts should only be tightened enough to ensure a proper seal of the exhaust HEPA filter. At maximum tightness, the exhaust filter's gasket should be compressed to 50% of its original thickness. NEVER tighten the bolts beyond this setting. 5.
Figure 7-23 ECM Power Connector Release Tabs ECM Data Connector Release Tab 7. Using a 1/2-inch wrench, remove the two upper and one lower blower mounting bolts, as shown in Figure 7-24. Figure 7-24 Blower Mounting Bolts The motor/blower assembly is heavy. Handle with care. 8. While supporting the blower assembly, pull the assembly straight out the plenum, as shown in Figure 7-25.
Figure 7-25 9. To replace the motor/blower assembly, reverse the above procedure. Note: During reinstallation of the blower assembly, angle the rear blower bracket into the plenum blower opening. Make sure to engage the rear blower bracket inside the plenum blower hole. After reinstalling and tightening the three blower bolts, ensure that the rear blower bracket is correctly engaged by trying to move the blower assembly. If it is rigidly captured on the plenum, then the rear bracket is properly engaged.
Grille Removal Note: The grille must be thoroughly decontaminated before removing it. 1. Remove the work surface as described earlier. 2. At one end of the grille, grip the front of grille with one hand, and the back with the other hand. Pivot that end of the grille upward and inward, paralleling the angle of the sash, as shown in Figure 7-26. 3. Pull the other end of the sash up and away from the bottom edge of the cabinet. 4.
Figure 7-27 Diffuser Removal Caution: The diffuser should be surface decontaminated before removal. Note: If an IV bar is in place, it will have to be removed first. 1. Raise the sash to its fully open position. 2. Support the front edge of the diffuser while removing the two 7/16-inch acorn nuts on the front of the diffuser, as shown in Figure 7-28. Figure 7-28 Removing the diffuser acorn nuts (Dress panel and lamps removed for clarity only).
Note: The diffuser acorn nuts are secured to the studs with a removable thread locking compound to prevent them from vibrating loose during shipment of the Logic. There may be some resistance the first time the nuts are removed; this is normal. No additional thread locking compound need be applied to these acorn nuts unless the unit is being prepared for shipment. 3. Allow the front of the diffuser to drop and pull it straight out of the cabinet, as shown in Figure 7-29. Figure 7-29 4.
Preparing the Logic for Gaseous Sterilization Note: This section only reviews the steps required for preparing the Logic for Gas Sterilization. Thoroughly understand the sterilization procedures and protocols supplied by the manufacturer of the sterilizing system before attempting this operation. Note: The outlets of the Logic are designed to be continuously energized. 1. Unplug the Logic from electrical power. 2. Thoroughly surface decontaminate the working area of the cabinet.
Section Eight – Purifier Type B2 Logic Service Operations This section will review the tools needed, and common service operations for the Logic Total Exhaust.
Figure 8-2 To reinstall the panel, reverse these steps, ensuring that the plastic pin in the top corners of the dress panel properly engage the corner posts. Side Panel Removal Note: The side panel(s) must be taken off to remove the Logic from its pallet. 1. Remove and save the two Phillips screws on the front edge of the side panel. 2. Pivot the front of the panel away from the cabinet.
Corner Post Lower Trim The corner post lower trim pieces are secured by two 1/4-inch hex screws. When properly positioned, the bottom edge of the rubber washer on the screws should contact the chassis of the Logic. To adjust the trim piece, loosen both screws, reposition the trim piece, and then tighten the hex screws. See Figure 8-3. Figure 8-3 Using a ¼-inch wrench to adjust the corner post screws Note: DO NOT over tighten the screws; damage to the trim piece may occur.
Sash Operation The Logic sash uses a deadweight-counterbalanced system. The system consists of two separate weights on either side of the liner. Both weights are synchronized by a locked axle-pulley system. Both pulleys are fixed to the axle so that both weights must move together, preventing the sash from racking. Adjustment There are no adjustments for the width of the sash track. There should be approximately 1/8-inch lateral play of the sash in its track.
Sash Position Switches Two microswitches are used to indicate the sash position. The switches are the same, Labconco part # 3832400. A photo of both switches is shown in Figure 8-6. Figure 8-6 Sash Closure Position Switch Sash Operating Position Switch Sash Closure Position Switch The sash closure position switch signals the display microprocessor that the sash is open or closed allowing proper operation of the Blower, fluorescent or UV lights. It is wired in the normally open configuration.
Figure 8-7 Sash Closure Position Switch properly actuated against the sash weight Figure 8-8 Sash Operating Position Switch properly actuated against the sash weight Page 126 of 197
Sash Cable Retainer The sash cable retainers are located at the top of each sash pulley, as shown in Figure 8-9. If the retainer needs adjustment, Use a 3/8-inch wrench to loosen the bolt securing the retainer and adjust it until it contacts the pulley. Retighten the bolt. Figure 8-9 Exhaust Damper Adjustment The exhaust damper adjustment blade is located on exhaust stack. Using a #2 Phillips screwdriver, loosen the damper locking screw to move the damper open or closed, as shown in Figure 8-10.
Prefilter Replacement NOTE: The prefilter is not washable; it must be replaced when it becomes dirty. 1. Shut off the cabinet blower. 2. Using an appropriate step or ladder, remove the two wingnuts that secure the prefilter, located next to the electronics module, as shown in Figure 8-11. 3. Remove and discard the prefilter, and replace it with a new one. Retighten the two wingnuts that secure the prefilter.
8. Pull the exhaust HEPA filter straight out of the cabinet. Figure 8-12 Exhaust HEPA Filter bolts (two in each side of the exhaust connection) To Install an Exhaust HEPA Filter: 1. Slide the new exhaust HEPA filter all the way into the pan. 2. Sequentially tighten the four exhaust filter sealing bolts located at each corner of the exhaust filter tray until the exhaust filter gasket is compressed no more than 50%.
Figure 8-13 Center Sash Support 3. Remove the last two screws. Gently rock the cover, slide it to the left or right, and swing it out and away from the unit. 4. Use a 1/2-inch socket or wrench to tighten the three plenum lift bolts located as noted in Figure 8-14. This will lift the plenum off of the supply HEPA filter. Remove the Supply HEPA filter retainers on the front of the plenum, if present. 5. Slide the supply HEPA filter straight out the unit. 6.
bolts until the plenum contacts the HEPA filter and has slightly compressed the filter gasket. NOTE: The lift bolts should only be tightened enough to ensure a proper seal of the supply HEPA filter. At maximum tightness, the supply filter's gasket should be compressed to less than 50% of its original thickness. NEVER tighten the locking bolts beyond this setting. Motor/Blower Replacement Caution: The cabinet must be properly decontaminated before servicing the motor/blower.
Figure 8-16 Blower Mounting Bolts The motor/blower assembly is heavy. Handle with care. 7. While supporting the blower assembly, pull the assembly straight out the plenum, as shown in Figure 8-17. Figure 8-17 8. To replace the motor/blower assembly, reverse the above procedure. Note: During reinstallation of the blower assembly, angle the rear blower bracket into the plenum blower opening. Make sure to engage the rear blower bracket inside the plenum blower hole.
Work Surface Removal Note: The work surface of the cabinet must be thoroughly decontaminated before removing it. 4. Lift the front edge of the work surface straight up by grasping the knob handles at either front corner. 5. Pull the work surface straight out, letting its rear edge rest on the center support underneath. 6. Reinstall the work surface by resting the bottom on the center rail while pushing it back into the cabinet.
Towel Catch Removal Although not normally required, the towel catch can be removed for cleaning, inspection, etc. Note: The work surface of the cabinet and the towel catch must be thoroughly decontaminated before removing either. 6. Remove the work surface as described above. 7. Lift the front end of the center support straight up to release it from the locating pins (A). Set the support aside in the work area. 8. Remove the towel catch by pivoting the bottom out toward you (B). 9.
Diffuser Removal Caution: The diffuser should be surface decontaminated before removal. Note: If an IV bar is in place, it will have to be removed first. 5. Raise the sash to its fully open position. 6. Support the front edge of the diffuser while removing the two 7/16-inch acorn nuts on the front of the diffuser, as shown in Figure 7-20. Figure 8-20 Removing the diffuser acorn nuts (Dress panel and lamps removed for clarity only).
8. To reinstall the diffuser, ensure that the two holes on the back edge of the diffuser align with the diffuser support pins on the rear wall of the work area, as shown in Figure 8-22. Figure 7-22 Diffuser pins engaging the holes in the rear of the diffuser.
Preparing the Logic for Gaseous Sterilization Note: This section only reviews the steps required for preparing the Logic for Gas Sterilization. Thoroughly understand the sterilization procedures and protocols supplied by the manufacturer of the sterilizing system before attempting this operation. Note: The outlets of the Logic are designed to be continuously energized. 1. Unplug the Logic from electrical power. 2. Thoroughly surface decontaminate the working area of the cabinet.
Section Nine Electrical System Service Operations NOTE: In order to properly service the Logic, you must obtain a Logic Certifier Kit, Labconco P/N 3858400. Qualified certifiers can obtain this kit by contacting Labconco Customer Service Department at 800-821-5525. Fluorescent Lamp Lamp Identification All Logics use dual fluorescent lamps. The lamp information is shown in Table 8-1.
Lamp Socket Replacement 1. 2. 3. 4. Unplug the Logic Remove the dress panel as noted in Figure 7-1 Remove the fluorescent lamps from the sockets. To replace a socket, insert a small straight bladed screwdriver into the socket near the lamp wire, as shown in Figure 9-1. 5. Press the wire into the new socket. 6. Reassemble the unit. Figure 9-1 Optional Ultraviolet Lamp Lamp Identification All Logics use a single 30-Watt germicidal lamp. The lamp information is shown below.
Changing the UV Lamp Note: For optimum performance, the UV lamp should be changed on an annual basis. Caution: The UV lamp and the work area of the cabinet must be thoroughly surface decontaminated before removing the lamp. 1. 2. 3. 4. Unplug the Logic. Raise the sash to its full open position. Surface decontaminate the UV lamp and the work area of the cabinet. Remove the UV lamp by rotating it 90 degrees and lifting it straight up and out of its sockets. 5.
Electronics Module Access The Electronics module is located on the top right side of the cabinet. To access the module, do the following: 1. Unplug the Logic, either at the wall, or at the power cord inlet at the back of the electronics module, as shown in Figure 9-2. 2. Remove the two 7/16-inch acorn nuts and lock washers that secure the module. 3. Tip the module on its side, and secure it so it does not fall.
Circuit Breaker Resetting a circuit breaker To reset any of the circuit breakers located on the left side of the electronics module, as shown in Figure 9-4, depress the white button until it sets. Figure 9-4 Circuit Breakers- The front breaker protects the electrical outlets, the rear breaker protects the motor and lights. Circuit Breaker Specifications Circuit breaker specifications are shown in Table 9-2, below.
Circuit Breaker Specifications, 230 VAC Model Motor/Light Breaker Rating, Amps Motor/Light Breaker, Labconco Part # Motor/Light Breaker, Mechanical Products Part # Outlet Breaker Rating, Amps Outlet Breaker, Labconco Part # Outlet Breaker, Mechanical Products Part # 34308 4 34300 4 34408 4 34400 4 34508 5 34500 5 34608 5 34600 5 1327209 1327209 1327209 1327209 1327204 1327204 1327204 1327204 1600-062040-007 1600-062040-007 1600-062040-007 1600-062040-007 1600-062050-007 1600-062050-007
Power Supply and Relay Board Service Operations The Power Supply and relay boards are considered a single part, Labconco part number. 3842900. Fuse Testing & Replacement The Power Supply Board is protected by an integral 5 x 20mm, fuse, rated at 2.5 Amps at 250 volts, as shown in Figure 9-5. The fuse is tested with a standard continuity meter. Any resistance across the fuse indicates a defective fuse and should be replaced.
Output Voltage Testing NOTE: Use caution when measuring test voltages to avoid short circuits. There are 4 test points to measure the output of the Power and Relay boards, numbered TP1-TP4, as shown in Figure 9-6. Figure 9-6 Test Point 3 (TP3) Test Point 1 (TP1) Test Point 2 (TP2) Test Point 4 (TP4) \ Under normal operation, the following voltages should be read: TP1 TP2 TP3 TP4 – Ground - +12 +/- 0.48 VDC - +5 +/- 0.
Touchpad Connections To correctly connect the touchpad to the Display Board, orient the ribbon connector so the metallic side of the connector is away from the side of the Logic, as shown in Figure 9-7. Figure 9-7 Aligning the touchpad ribbon connector and the circuit board (metal frame and other wiring omitted for clarity). Diagnostic Operations There are three diagnostic tests that can be run: The Keypad, the optional airflow sensor (standard on Type B2 Logics), and the optional canopy airflow sensor.
Airflow Sensor Testing When airflow sensor is selected, the LCD will show the raw data from the airflow sensor, as shown in Figure 9-8. This can be useful in diagnosing sensor operation, blockages or obstructions near the sensor, etc. Figure 9-8 Hours, Minutes and Seconds of operation since last system reset. “Raw” velocity of air as reported by the sensor. Temperature in degrees Centigrade. Canopy Sensor Testing When canopy sensor is selected, the LCD will show operation of the canopy airflow switch.
Motor Service Operations NOTE: Use caution when measuring test voltages to avoid short circuits. The ECM does not require routine service. The motor bearings are permanently lubricated, and do not require additional lubrication. Motor Testing For the ECM to operate properly, the motor must receive: 1. Line voltage across pins 4 (black wire) and 5 (white wire) through the power connector. 2. 24 Volts DC through pin 1 (brown wire circuit common) and 15 (yellow wire) on the data Connector. 3.
4. Disconnect the 15-pin connector, and install the pass-thru harness, as shown in Figure 9-10. Plug the Logic back in. With the meter set on AC voltage, verify the AC mains line voltage is present within ± 5 VAC when the AC voltage is measured across pin 2 (black wire) and pin 3 (white wire) on the 3-pin connector, as shown in Figure 9-11. Figure 9-10 Pass-thru Harness installed Figure 9-11 Measuring Line voltage 5.
6. Next, connect the meters + DC voltage lead to pin 6 (yellow wire) and verify there is ± 24 Volt DC ± 5 Volts DC, as shown in Figure 9-12. The presence of 24 Volt DC on this yellow wire tells the motor to start. Figure 9-12 Measuring 24 VDC voltage 7. Next, move the meter’s + DC voltage lead to pin 5 (purple wire) [the meter’s lead is still connected to pin 8 (brown wire)]. Note the DC voltage, since the motor’s speed is determined by the pulse width modulated signal on this contact.
Motor Output Signal Testing Using the Microprocessor “Calibration” Mode to access the “Motor Speed Factor” LCD screen. Access the “Calibration” Mode by pressing “Menu” and “OK”, then select “Cabinet Set-up” and “OK” and finally select “Calibration.” Then enter the password sequence “Light, UV, Timer, Timer” and then press “OK.” The LCD screen will now show the PWM output % signal and next to that, the instantaneous and averaged motor RPM signals sent back from the motor to the electronic controls.
Wiring Diagrams -115 VAC Models Page 152 of 197
Wiring Diagrams -230 VAC Models Page 153 of 197
Wiring Diagrams -230 VAC EN 12469 Compliant Models Page 154 of 197
Section Ten – Purifier Logic Accessories Canopy Connection Kit No. 3898000, -01, -02, -03 NOTE: If the canopy was installed at the factory, go directly to Page 4, Section 4. NOTE: Before beginning this installation, Turn the Logic on, access the Menu, select the Cabinet Setup option, then the Calibration option. Press Light, UV Light, Timer, Timer and then OK. This will bring up the motor speed adjustment screen.
On Models Manufactured After April 2009 – 3. Remove the exhaust HEPA filter cover by loosening the four Phillips Screws on the sides of the cover, then pivot the front of the cover up, and then pull it forward as shown. Pivot the front of the cover up and then pull it forward (dress panel removed for clarity only). Loosen these screws only Note: exercise caution when removing or installing the exhaust filter cover, to prevent damaging the Exhaust HEPA filter. 4.
Section 2. - Canopy Pressure Switch Wiring Harness Installation Procedure 1. Ensure that the Logic is unplugged. 2. Unwind the Switch wiring harness from the alarm module on the right side of the canopy. 3. Connect the Harness to the Alarm Contact connector on the left side of the electronics module, as shown. Ensure that there is slack in the sensor cable where it connects to the harness. NOTE: The female blade connectors on the harness are used for signaling external systems the blower and alarm status.
6. Note the orientation of the control circuit board in the metal frame. Disassemble the four screws and nuts securing the control circuit board to the metal frame as shown. 7. Install the new control board by reversing the above steps. Before closing and securing the side panel, ensure the control circuit board display is centered on the display window on the cabinet’s side wall.
4. Turn on the Logic and allow unit to operate for at least 5 minutes. 5. The unit is now ready for calibration. Upon initial power up, a new Logic board may prompt you for the certifier’s password. If so, press Light, UV Light, Timer, Timer and then OK. If the normal display is shown after power up, access the Menu, select the Cabinet Setup option, then the Calibration option. Press Light, UV Light, Timer, Timer and then OK. This will bring up the motor speed adjustment screen.
Canopy Exhaust Volume Measurement 8. Remove the tape holding the exhaust relief valve(s) open and close them. Reattach the filter access panel. 9. Turn on the external blower. 10. Using a thermal anemometer, measure the inflow velocities along the horizontal centerline of the canopy intake slot, at points 1 inch from either end, and in the center of the slot. 11.
Air Flow Sensor Kit No. 3859400 Note: A qualified certifier must install and calibrate this sensor to obtain accurate operation. Note: Exercise caution when working on the exhaust filter cover, to prevent damaging the Exhaust HEPA filter. Installation Procedure 1. Disconnect power to the Biosafety Cabinet. 2. Remove the exhaust HEPA filter cover. 3. Using the supplied screws and locknuts, secure the air sensor and its cover to the Exhaust HEPA Filter Cover, noting the orientation in the figure below.
5. Remove the two Phillips screws on the front edge of the right side corner post, and allow the front of the side panel to swing out and lift off. 6. Continue routing the sensor cable along the main harness on the right side of the cabinet. Secure the sensor harness with the remaining ties as shown. 7. Route the cable to avoid pinch hazards, and to bring the two airflow sensor connectors to the control board. Insert the two connectors into the control board.
8. Reinstall the side panel and reconnect the Logic to electrical service. The unit is now ready for the calibration of the air flow sensor. Note: You will need to access the certifiers menu to calibrate the airflow sensor. Note: To properly calibrate the air flow sensor, a qualified certifier must verify the inflow and downflow values. With the Logic operating, press: “Menu” The Display will change to Menu mode. Press the up or down arrows (▲ or ▼) until “Cabinet Setup” is selected.
To Reset the Filter Gauge To reset the filter gauge to display 100%, select the “reset filter gauge” option, then press: “Mute/OK” To leave the gauge at its current setting, select the option “Filter not changed”, and press: “Mute/OK” The display will now change to the Inflow and downflow calibration mode. Setting the Inflow and Downflow The next screen will be the downflow calibration screen.
Canopy Air Sensor Kit No. 3896600 Note: This kit is designed to install a digital (Inflow and Downflow) air sensor in a canopy-connected Type A2 Logic only. If you are want to install a digital airflow sensor in a non-canopy connected Logic, then you must use kit # 3859400. Note: A qualified certifier must install and calibrate this sensor to obtain accurate operation. Installation Procedure 1. Disconnect power to the Biosafety Cabinet. 2.
7. Install the new control board by reversing the above steps. Before closing and securing the side panel, ensure the control circuit board display is centered on the display window on the cabinet’s side wall. If the display is not centered, loosen both mounting nuts, and move the control circuit board and its metal frame until it is centered, then retighten the nuts. 8. Install the sensor assembly into the rear of the canopy connection as shown.
9. Route the sensor cable along the front of the cabinet and secure it to the existing harness running along the front of the cabinet, using nylon ties along the top of the cabinet as shown. Ensure that there is slack in the sensor cable where it connects to the harness. NOTE: Ensure the sensor harness does not contact any moving parts. Existing Wiring Harness One nylon tie (more ties are shown below) Slack in the sensor cable 10.
12. Route the cable to avoid pinch hazards, and to bring the two airflow sensor connectors to the control board. Insert the two connectors into the control board. One harness connector has 5 pins, and the other has 6. Connect each to the corresponding pin connectors on the board as shown in the following photo. Airflow Sensor connectors 13. Reinstall the side panel and reconnect the Logic to electrical service.
To Change the Blower Speed In the speed setting mode, the number shown is the motor power factor, and should be 65-85. To increase or decrease the blower speed, press the up or down (▲ or ▼) arrows, respectively. When the number is properly set, wait until the display stops flashing “wait”, and press: “Mute/OK” This resets the blower speed, and the display will change to the filter gauge mode.
Service Fixture Kit No. 3747500 Completely decontaminate all interior work surfaces of the Purifier before beginning the installation of the service valve. Additional service fixtures can be installed in any of the four available service fixture holes in the sidewalls. The service fixture kit is Labconco part number 3747500. Installation Procedure 1. Decide which of the available locations you want to install the service fixture. 2.
4. Carefully remove any remaining sealant from the service fixture hole. 5. Using the Teflon tape supplied, wrap two to three turns of tape on the male pipe thread of the valve, and the tube fitting. 6. Put the threaded end of the fixture through the hole, orienting the valve as shown in Figure 10-1. Using the silicone sealant, apply a bead of silicone on the outside surface of the cabinet side, around the valve body. This will provide a pressure tight seal around the valve body.
UV Lamp Kit No. 3858500, -01, -02 All Labconco Purifier Logic Series Biosafety Cabinets are pre-wired for the installation of a UV lamp kit, consisting of the UV lamp, its ballast, and fasteners. The kit is part number 3858500 for 115 Volt models, 3858501 for 100 Volt models, and 3858502 for 230 Volt units. A qualified electrician or certifier should install the UV lamp kit. Decontaminate all interior work surfaces of the Purifier before beginning the installation of the UV lamp. Installation Procedure 1.
5. Using the Phillips screws and locking nuts provided, secure the UV ballast to the module. 6. Wire the UV ballast into the wiring harness, following the wiring diagrams located in Figure 2a-c. 7. Reattach the electronics module to the top of the cabinet before reconnecting the electrical power. 8. Raise the sash, and install the UV lamp by rotating the lamp pins into the sockets. 9. Lower the sash to fully closed position, plug in the unit, and turn the system power switch to the "UV" position.
IV Bar Kit No. 3858600, -01, -02, -03 Completely decontaminate all interior work surfaces of the Purifier before beginning the installation of the IV bar. Installation Procedure 1. Disconnect power to the Logic and raise the sash to the fully open position. 2. Remove the four screws on the sidewalls and save them. 3. Mount one of the IV brackets on either sidewall. Orient and secure the bracket using the flat washers, lock washers and the screws as shown in Figure 1. 4.
Prefilter No. 3859200, -01, -02, -03 The Prefilter provides a convenient means to prevent large particles from being pulled into the blower and HEPA filter of the biological safety cabinet. The Prefilter is a simple addition and easily replaced with its self-adhesive glue lines. Please note that this accessory was tested in the Purifier LogicTM Biosafety Cabinet at NSF and validated to have no adverse affect on containment.
Postfilter Conversion Kit 02, -03 No. 3859300, -01, - NOTE: To prevent damage to the Exhaust HEPA filter, exercise caution when removing or installing the exhaust filter cover or the postfilter pan. Installation Procedure Note: exercise caution when removing or installing the exhaust filter cover, to prevent damaging the Exhaust HEPA filter. On Models Manufactured prior to April 2009 – 8. Turn off the Biosafety Cabinet. 9.
On Models Manufactured After April 2009 – 1. Turn off the Biosafety Cabinet. 2. Remove the exhaust HEPA filter cover by loosening the four Phillips Screws on the sides of the cover, then pivot the front of the cover up, and then pull it forward as shown. Pivot the front of the cover up and then pull it forward (dress panel removed for clarity only). Loosen these screws only Note: exercise caution when removing or installing the exhaust filter cover, to prevent damaging the Exhaust HEPA filter. 3.
4. Install the replacement brackets that were included with the postfilter accessory kit. 5. Install the postfilter pan between the exhaust filter brackets. Line up the holes in the postfilter pan with the screw holes in the brackets. 6. Install the four screws, washers and nuts supplied with the kit as shown, and tighten them securely to the exhaust filter brackets. 7. Install a new postfilter, making sure the airflow direction arrows point upward. Reinstall the exhaust filter cover.
Logic Relay Contact Outputs: Labconco Logic Biosafety Cabinet (BSC) models are provided with TWO dry relay contacts to allow connection to an external monitoring system, or to switch other air handling units “on” when the Labconco unit is turned on. The Labconco Logic BSC provides two contacts: One to indicate the internal Labconco blower is on, (so that external blowers may also be energized) and the other to indicate airflow errors.
Generally, the Labconco provided contacts can switch very low amounts of electrical current, so to control high power, line-operated devices, the Labconco contacts must be used to control yet another set of contacts that are rated for the actual load being switched. The wiring diagram indicates that the “Blower On” contacts are located at J4-pins 3 & 4 while the Airflow Alarm contacts are located at J4-pins 1&2. Relay Contact #1 …….
The next diagram shows an example of using an AC powered coil, so the Logic’s +12v is not used. The Hasco HAT 903 relay series offers a 120VAC coil that requires only 16mA AC current as well as a 230volt coil that draws only 9mA. An alternate circuit that uses an AC mains rated coil voltage is shown below – it does not utilize the +12v and circuit common from the Labconco Logic. Note: A W199 Magnacraft Series relay can switch up to 300Vac @ 40 Amps……….it’s coil is rated for 12 Vdc, 171mA, or approx.
The final diagram shows a connection for a 3-phase powered blower.
Relay Contact #2……the “airflow error” contact This set of contacts (dry contacts pins 1 & 2 of J4 on the electrical enclosure, and the ORANGE wires on Labconco harness #38468-00) will indicate when the BSC’s has an airflow error, as described by the conditions below: Type of Logic unit All Labconco Logic Cabinets Alarm Condition LCD display message SASH TOO HIGH Airflow Error dry contacts No Response Motor RPM has shifted abruptly HEPA Filter approaching end of life—20% HEPA Filter approaching end of li
Adding the Optional RS-232 to the Logic The kit contains the RS-232 PCB (#74480), and the attaching hardware to install the PCB inside the electrical control box (located on top of the Logic). Picture #1 shows the general location where the Logic RS-232 PCB will be installed. WARNING!! DISCONNECT ALL ELECTRICAL POWER FROM THE UNIT BEFORE BEGINNING THIS PROCEDURE!!!! To install: 1) Carefully remove the square “knock-out” shown in picture #1 under the “RS-232 Port” label.
Locate the connector and wiring that is part of the existing harness inside the electrical control box, (see the picture below) and connect to J1. 3) Re-secure the electrical control box to the top of the Logic. 4) Connect the computer interface cable, # included in the kit to the J2 connector, and connect the other end of this cable to a 9-pin serial input of a computer. Proceed to the directions “Using the RS-232 Receptacle”.
Using the RS-232 Receptacle The operation of the Logic Biological Safety Cabinet (BSC) can be monitored using a computer connected to the RS232 receptacle located on the top electrical box of the Logic. The computer monitors the Logic’s operation, but cannot control the operation of the Logic. Computer Connection for Computer Interface Check your computer to see which type of serial port is provided. Use one of the two connecting cables listed below: 1.
OPTIONAL LOGIC RS-232 DATA OUTPUT Here is the RS-232 output for the Logic. As is standard for all Labconco units, the data is limited to 80 characters, including spaces, etc.
Example: OBFN,N,NNN,79,1021,1000,RA=0200F, I=0105F, D=055F There are several commercially available software packages, which can read RS232 data and enter the data into a computer program such as a word processor (to create a text file) or spreadsheet (to tabulate and plot the data). Consult your laboratory supply dealer regarding the latest software available.
Section Eleven – Troubleshooting Refer to the following table if the Biosafety Cabinet fails to operate properly. If the suggested corrective actions do not solve the problem, contact Labconco for additional assistance. PROBLEM CAUSE CORRECTIVE ACTION Cabinet blower and lights won’t turn on Unit not plugged into outlet Plug the Biosafety Cabinet into appropriate electrical service.
PROBLEM CAUSE CORRECTIVE ACTION Blower runs slower than normal; speed control has little effect on blower speed. Blower may take more than 5 seconds to start. Motor signal wires damaged or disconnected Measure motor output signal voltage. Inspect signal wiring and connections Power Supply Board misconnected or defective Test output voltages on the Power Supply board. Motor jumper wire is damaged/ disconnected (115/100 Volt models only) Inspect grey wire #31 on 15 pin connector for continuity.
PROBLEM CAUSE CORRECTIVE ACTION Fluorescent light is dim or flickering Lamp(s) are defective Replace defective lamp(s) Lamp wiring is disconnected Inspect lamp wiring. Defective lamp ballast Replace lamp ballast. Sash is open Close sash – UV light will not work with the sash open. Lamp is defective Replace defective lamp. Lamp wiring is disconnected. Inspect lamp wiring. Defective lamp ballast Replace lamp ballast.
Contamination of work in the cabinet Page 192 of 197 exhaust outlet not blocked or restricted. Blockage or restriction under the work surface Ensure that the towel catch and plenum beneath the work surface are unobstructed. Improper technique or procedure for the Biosafety Cabinet See “Use of the Cabinet” section in the manual. Restriction of the return air slots or grille – blockage of the exhaust outlet Ensure that all return air slots, grilles and the exhaust outlet are unobstructed.
Type A1 & A2 Biosafety Cabinet Replacement Parts Item 1 1A 1B 2 2A 2B 2C 3 3A 3B 3C 4 4A 4B 4C 5 5A 5B 6 7 8 8A 8B 8C Quantity 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 1 2 1 1 1 1 1 2 3 4 5 6 7 8 Page 193 of 197 Part No.
Type B2 Biosafety Cabinet Replacement Parts Item Quantity Part No. 1 1A 2 2A 3 3A 4 4A 5 5A 6 7 8 8A 1 1 1 1 1 1 1 1 2 2 1 2 1 1 3850500 3850501 3838501 3838503 3832204 3832205 3838401 3838403 9721900 9721903 1271300 1287900 3858901 3858903 1 2 3 4 5 6 7 8 Page 194 of 197 Description Prefilter for 4-foot models Prefilter for 6-foot models Exhaust HEPA Filter 4-ft Exhaust HEPA Filter 6-ft Motor / Blower Assembly, 4 Ft. TE Motor / Blower Assembly, 6 Ft.
Type A1 & A2 Dimensions Page 195 of 197 Width “A” “B” “C” 3' 4' 5' 6' 42.3 54.3 66.3 78.3 36.5 48.5 60.5 72.5 13.6 19.9 26.9 32.
Type B2 Dimensions Page 196 of 197 Width “A” “B” “C” 4' 6' 54.3 78.3 48.5 72.5 17.2 28.
Section Twelve – Cell Logic Certification The Cell Logic models are Type A2 and B2 Logics modified for use with a microscope and/or the addition of a temperature-controlled work surface area. These units should be treated the same as their corresponding Logic models with the following exceptions noted: 1. Type A2 Cell Logics have a 9-inch sash opening. Refer to the following table for inflow requirements: Model Cabinet Size (in feet) Sash Opening (inches) Starting Serial #1 Nominal Avg.
