P/N 125166 REV. 11/07 C-159 LCC SERIES OVENS INSTRUCTION MANUAL Model Volts Phase Hz Heater Watts Total LCC 1-11 240 1 50/60 3,000 14.2 LCC 1-11N 240 1 50/60 3,000 14.2 LCC 1-54 240 1 50/60 6,000 26.7 LCC 1-54N 240 1 50/60 6,000 26.7 LCC 1-54NV 240 1 50/60 6,000 26.7 LCC 1-87 240 1 50/60 9,000 42.2 LCC 1-87N 240 1 50/60 9,000 42.2 LCC 1-87NV 240 1 50/60 9,000 42.2 Prepared by: Despatch Industries P.O.
Notice Users of this equipment must comply with operating procedures and training of operation personnel as required by the Occupational Safety and Health Act (OSHA) of 1970, Section 6 and relevant safety standards, as well as other safety rules and regulations of state and local governments. Refer to the relevant safety standards in OSHA and National Fire Protection Association (NFPA), section 86 of 1990.
PREFACE This manual is your guide to the Despatch oven. It is organized to give you the information you need quickly and easily. The INTRODUCTION section provides an overview of the Despatch oven. The THEORY OF OPERATION section details the function and operation of assemblies and subassemblies on the Despatch oven. Read NOTE: the entire INTRODUCTION and THEORY OF OPERATION before installing the oven.
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TABLE OF CONTENTS INTRODUCTION ............................................................................................................. 1 Special Features .................................................................................................. 1 SPECIFICATIONS .......................................................................................................... 2 Dimensions ...........................................................................................................
Control Output Check .............................................................................. 24 Thermocouple Test .................................................................................. 25 Safety Controls ........................................................................................ 25 Replacement ...................................................................................................... 26 Parts .........................................................................
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INTRODUCTION This section provides an overview of the Despatch LCC Series oven. The LCC offers HEPA filtration for processes where minimization of contamination is essential. Fresh air and nitrogen (noted with an N suffix) models are available. Special Features The removable HEPA (High Efficiency Particulate Air) filter is designed to provide a constant flow of 99.97% clean air to the product.
SPECIFICATIONS Dimensions Model Chamber Size, inches (cm) W D H LCC 1-11 10 (25) 14 (35) 14 (35) LCC 1-11N 10 (25) 14 (35) LCC 1-54 18 (46) LCC 1-54N, LCC 1-54NV Capacity, 3 ft (liters) Overall Size, inches (cm) Maximum Number of Shelves W D H 1.1 (31) 25 (64) 21 (53) 32 (81) 5 14 (35) 1.1 (31) 26 (66) 21 (53) 32 (81) 5 20 (51) 26 (66) 5.4 (153) 34 (153) 29 (74) 43 (109) 11 18 (46) 20 (51) 26 (66) 5.
Capacities Model LCC 1-11 LCC 1-11N LCC 1-54 LCC 1-54N, LCC 1-54NV LCC 1-87 LCC 1-87N, LCC 1-87NV Maximum Load Lbs 25 25 150 150 200 200 Maximum Shelf Load Lbs 10 10 25 25 25 25 Recirculating Fan CFM H.P. 265 1/4 265 1/4 400 1/4 400 1/4 990 3/4 990 3/4 Approximate Net Weight Lbs. KG 285 129 285 129 380 172 380 172 500 227 500 227 Shipping Weight (approximate) Lbs.
Temperature Model LCC 1-11 LCC 1-11N LCC 1-54 LCC 1-54N, LCC 1-54V LCC 1-87 LCC 1-87N, LCC 1-87NV 25 C 100 C 4 4 5 5 4 4 25 C 200 C 13 13 14 14 12 12 25 C 260 C 20 20 23 23 18 18 Recovery Time Door Open 1 Minute (approximate minutes) 125 C 0.5 0.5 1 1 1 1 200 C 1 1 2 2 2 2 260 C 2.5 2.
THEORY OF OPERATION The THEORY OF OPERATION section details the function and operation of the Despatch LCC Series Ovens. The LCC series oven is a class 100 clean room oven with HEPA (High Efficiency Particulate Air) filtration. This oven is ideal for processes where minimization of contamination is essential. Forced convected airflow, provides rapid uniform distribution of heat. An absolute HEPA (High Efficiency Particulate Air) filter is mounted in a stainless steel frame in the supply plenum.
Construction The LCC series oven has a type 304-2B stainless steel interior. All interior seams are continuously welded on the insulation side. This protects the work chamber from contaminated air and permits chamber washing without damaging the insulation. Interior chamber walls and silicon door gaskets (Viton Fluorocarbon on NV models) can be easily removed for cleaning. Heater frame, fan wheel and motor shaft are constructed of stainless steel.
HEPA Filters Absolute HEPA (High Efficiency Particulate Air) filters are used to limit particulate size in the work chamber to 0.3 microns or less. The gentle entrance and exit air velocity to and from the HEPA filter results in high efficiency and long life for the HEPA filters. Definitions HEPA - High Efficiency Particulate Air Chamber NOTE: temperature transitions must not exceed 1.5 C/minute in order to maintain class 100 chamber conditions.
Handling The filter is shipped in the original carton or package that the filter manufacturer uses. This will give good storage and maximum protection from dirt and moisture. HEPA filters should be stored and moved in the shipping carton with in the upright position. Handling should be kept to a minimum. During installation the filter should be removed from the shipping carton and installed directly into the oven.
period of time onto a clean disk. Validation Testing Based on the issues discussed in this section, Despatch recommends the following test sequence for pharmaceutical Class 100 ovens. 1. Proper installation of the HEPA filters. 2. Cold D.O.P. challenge to determine integrity of oven chamber and filter gaskets. 3. Proper filter burn-off procedure. 4. Class 100 testing inside the work chamber.
Water droplets in airstream through filter, free water (RH = 100%), will saturate filter very quickly and may cause burnout or holes in burned off filter media. High level of radiation in the vicinity of the filter unit. CONTROL Instrument The CONTROL instrument operates the heating element in response to the entered temperature setpoint. It provides digital indication of the setpoint and actual oven temperature.
Oven High Limit Instrument If the product does not have a critical high temperature limit, the HIGH LIMIT can be used as an oven HIGH LIMIT instrument. An oven HIGH LIMIT instrument protects oven equipment. Since the HIGH LIMIT instrument does not show the temperature, it can be properly set only after oven is in operation. Until then, the HIGH LIMIT should be set at maximum position so all preliminary testing and adjusting can be done.
INSTRUCTIONS The INSTRUCTIONS section provides directions on unpacking, installation, operation and maintenance of the Despatch LCC Series Ovens. Unpacking and Inspection Remove all packing materials and thoroughly inspect the oven for damage of any kind that could have occurred during shipment. See whether the carton and plastic cover sheet inside carton are still in good condition. Look at all outside surfaces and corners of the oven for scratches and dents.
Industries to have the appropriate materials forwarded to you. Any optional accessories ordered will be shipped separately. 5. Complete the warranty card and mail it to Despatch within 15 days after receipt of the equipment. Set-up 1. Remove adhesive backing sheet from the rubber pads. 2. Attach rubber pads to the bottom corners of the oven. 3. Place oven on a bench top or an optional DO WARNING: NOT use oven in wet, cabinet base.
The brass needle valve on the face of the water flowmeter can be used for adjusting the water flow or shutting off the water flow. c. WARNING: never allow drain to be plugged as a hot oven will generate a small amount of steam when the water is first turned on. Steam burns. i. Run tubing from flowmeter to water valve. ii. Connect a clean water supply to the flowmeter marked inlet. iii. Adjust the water flow. Cooldown times and steam generation are dependent on cooling water flow rate.
7. Identify correct power source indicated on the specification plate. Power requirements are also listed on the cover of this manual. 8. Hardwire oven directly to a disconnect switch and wire the disconnect switch directly to the electric supply. Refer to the electrical schematic in the back of this manual and the power requirements table in the Specifications section. HEPA Filter Installation Craftsmen responsible for installing the filter should use caution.
3. Check the corner joints of the frame for adhesive sealing and tightness. Check that the gaskets are cemented firmly to the filter frame and that the gasket pieces are butted or mated at the joints. Remove the old HEPA filter. a. Unscrew the four (4) brass nuts on the left side of the work chamber. b. Remove the perforated duct exposing the filter. c. Remove and discard the old HEPA filter. 4. Install the filter with the gasket centered around the hole in the side wall of the oven.
the final location for the oven. However, it may be a receiving dock, some well ventilated space or even outside if the weather is acceptable. If this location is a very clean area, then special attention must be given to an exhaust hook-up that will capture the smoke and odor. The following procedure is recommended: 1. Locate the equipment exhaust opening where chamber air is being expelled. If the oven filter is burned off in a clean area, be sure to handle the equipment exhaust appropriately.
OPERATING Users and operators of this oven must comply with operating procedures and training of operating personnel as required by the Occupational Safety and Health Act (OSHA) of 1970, Section 5 and relevant safety standards, and other safety rules and regulations of state and local governments. Refer to the relevant safety standards in OSHA and National Fire Protection Association (NFPA), Section 86 of 1990.
Pre-Startup Checklist Know the system. Read this manual carefully. Make use of its instructions and explanations. The know how of safe, continuous, satisfactory, trouble-free operation depends primarily on the degree of your understanding of the system and of your willingness to keep all parts in proper operating condition. Check line voltage. This must correspond to nameplate requirements of motors and controls. A wrong voltage can result in serious damage.
4. For the inert atmosphere ovens, adjust flow rate. a. Determine the desired oxygen level. b. Use the following chart to determine the time to achieve the desired oxygen level. NOTE: When operating the oven without the optional water cooling, the minimum operating temperature is approximately 78 C (nitrogen models) and approximately 20 C (non-nitrogen models) over the ambient room temperature. This is the result of the heat generated by the recirculating fan.
c. Turn the nitrogen valve switch to the PURGE position for the time to achieve oxygen level as determined in step 2b. d. When the purge is complete, turn the nitrogen valve switch to the MAINTAIN position. e. Determine the MAINTAIN flowmeter value to maintain the oxygen stabilization level. f. Adjust the MAINTAIN flowmeter to the value determined in step 2e. WARNING: Never operate the oven at a temperature in excess of the maximum operating temperature which is 260 C (500 F). 5.
7. After heating cycle is complete, turn the heater toggle switch to the OFF position. Do not turn the power off until the oven chamber temperature is below 100 C (212 F). Shut Down 1. Push the heater switch to OFF after the heating cycle is complete. 2. Do not turn the power off until the oven temperature is below 150 C (302 F). If the oven is turned off before it is properly cooled, the fan shaft and motor bearings may become overheated, shortening the life of the motor. 3.
Maintenance Do not attempt any service on this oven before opening the main power disconnect switch. Checklist Keep equipment clean. Gradual dirt accumulation retards air flow. A dirty oven can result in unsatisfactory operation such as unbalanced temperature in the work chamber, reduced heating capacity, reduced production, overheated components, etc. Keep the walls, floor and ceiling of the oven work chamber free of dirt and dust. Floating dust or accumulated dirt may produce unsatisfactory work results.
Tests Tests should be performed carefully and regularly. The safety of personnel as well as the condition of equipment may depend upon the proper operation of any one of these controls at any time. Nitrogen Supply Check This test is necessary in nitrogen models only. 1. 2. Turn the inert atmosphere valve on High WARNING: voltage is present on terminals, the control panel to the OFF voltage checks should be made only by position. qualified electrical maintenance personnel: e.g. electrician or technician.
and < 1 VDC when off. 5. Reconnect line power to the control. 6. Replace the SSR if shorted or replace the CONTROL instrument if the output does not measure properly. Thermocouple Test 1. Place a jumper or short the thermocouple terminals on the control. The display should read ambient temperature and be very stable. 2. Replace the CONTROL if the unit is not stable. Safety Controls Make these tests carefully and do them regularly.
Shut WARNING: down nitrogen supply and disconnect main power switch or power cord before attempting any repairs or adjustments. Replacement Parts To return parts contact Despatch Industries to obtain an MRA (material return authorization) number. This number must be attached to the returned part for our identification. If required, a new part will be sent and invoiced to you. When the return part is received, credit will be given, if in warranty.
Fan Motor (Tools needed: Screwdriver, Allen wrench, crescent wrench) 1. Disconnect power. 2. Remove filter cover and filter from left side. 3. Remove floor plate. a. Remove screws from the floor plate. b. Lift floor plate out of the oven. 4. Remove the screws from the heater frame then tip up and to the right. 5. Loosen set screws on fan wheel inside fan housing. 6. Remove the screws from the face of the control panel and slide it forward to uncover motor. 7. Tip oven on its back. 8.
16. Tighten set screws making sure set screws hit the flats machined into the motor shaft. 17. Bolt heater back in place. 18. Replace interior floor. 19. Replace filter and filter cover. 20. Reconnect power. Replacing HIGH LIMIT (Tools needed: Screwdriver, one quarter (¼) inch socket set) 1. Disconnect power. 2. Remove screws from face of control panel and slide it forward. 3. Remove wires from HIGH LIMIT noting which numbered wires connect to which terminals.
Thermocouple Break Protection If the thermocouple breaks, the control instrument will shut off power to the heater, preventing excessive temperature in the chamber. Replacing the Thermocouple (Tools needed: Small screwdriver and small crescent wrench) The controller thermocouple is type J (iron/constantan) and is replaceable using the following procedure: 1. Disconnect power and remove screws from the face of the control panel and slide it forward. 2.
Heater Unit (Tools needed: Crescent wrench, screwdriver, one quarter (¼) inch socket set) 1. Disconnect power. 2. Remove filter cover and filter from left side. 3. Remove floor plate. a. Remove screws from the floor plate. b. Lift floor plate out of the oven. 4. Disconnect heater leads from heater element with wrench. Note which wires go on which terminals. 5. Unscrew screws holding the frame to the oven body. 6. Remove heater and discard. 7. Screw down new heater frame. 8.
APPENDIX Troubleshooting Equipment operating for long periods may have occasional problems. Below are possible problems and suggested solutions. If you have a problem not listed and do not know what to do, contact Despatch Industries at our toll-free Help Line (800-473-7373). Difficulty Probable Cause Suggested Remedy Failure to heat No power Check power source and/or oven and wall fuses. Burned out heating element Replace element (see warranty statement).
Difficulty Probable Cause Suggested Remedy temperature around door Door seal deterioration Replace door seal. Improper airflow Fan motor failure Replace fan motor. Unbalanced fan heel Replace fan heel. Filter clogged Replace filter. Dirty fan wheel Clean fan. Unbalanced fan wheel Replace fan. HIGH LIMIT instrument set too low Set the HIGH LIMIT instrument higher. HIGH LIMIT is out of calibration Recalibrate the HIGH LIMIT Solid state relay malfunction Replace solid state relay.
Factory Installed Options Access Ports Circular openings welded into top or rear of chamber. Standard sizes available include 1, 2, 3 and 4 inches in diameter and come complete with a threaded cap. Door Switch A switch activated by the chamber door which will disable the heater, or the heater and recirculation fan. High limit/end of cycle alarm Alarm horn and red light which will indicate a HIGH LIMIT condition or the end of a process cycle.
Drawings The drawings on the next pages are the electrical schematics for the following ovens: LCC 1 - 11 - 2 & LCC 1 - 11N – 2 Digitronic Controller DA351-080928J00 MIC1462 Controller DA351-140028B00 LCC 1 - 54 - 2 & LCC 1 - 54N - 2 & LCC 1 - 54NV – 2 Digitronic Controller CA351-054552T00 MIC1462 Controller DA351-140029B00 LCC 1 - 87 - 2 & LCC 1 - 87N - 2 & LCC 1 - 87NV – 2 Digitronic Controller CA368-081389I00 MIC1462 Controller DA351-140030B00 34
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