LBB Series Oven Owner’s Manual Version 18 LBB SERIES OVEN OWNER’S MANUAL PREFACE 1 C-188 PN 336979 VERSION 18 6/2014
PREFACE 2 LBB Series Oven Owner’s Manual Version 18 Revision History Revision C Date Author D E F G H I J K L 12 13 14 15 15 16 17 17.1 18 3/2011 9/2011 6/2012 8/2012 7/2013 8/2013 2/2014 4/2014 5/2014 Livingston Livingston Livingston Livingston Livingston Meyer Livingston Livingston E. Anderson Description Updated electrical drawings in DRAWINGS AND SPARE PARTS LISTS section. Corrections.
LBB Series Oven Owner’s Manual Version 18 PREFACE 3
PREFACE 4 LBB Series Oven Owner’s Manual Version 18
LBB Series Oven Owner’s Manual Version 18 Table of Contents 1. 2. 3. 4. 5. About This Manual............................................................................................................. 8 1.1. Important User Information ..................................................................................... 8 1.2. Manufacturer & Service .......................................................................................... 9 1.3. Organization of this Manual ............................
PREFACE 6 LBB Series Oven Owner’s Manual Version 18 5.4.1. Change Setpoint................................................................................................. 32 5.4.2. Control Instrument Parameter Programming Mode .......................................... 33 5.4.2.1. Entering Control Instrument Set-up and Configuration Mode ...................... 33 5.4.2.2. Control Instrument Operating Mode Notes ................................................... 34 5.4.3.
LBB Series Oven Owner’s Manual Version 18 Figures Figure 1. Disconnect Switch.......................................................................................................... 19 Figure 2. LBB Forced Convection Benchtop Oven. ..................................................................... 20 Figure 3. Uniflow Airflow through the LBB Oven. ...................................................................... 20 Figure 4. LBB Series Oven Primary Control Instrument .............................
ABOUT THIS MANUAL 8 1. LBB Series Oven Owner’s Manual Version 18 About This Manual 1.1. Important User Information Copyright © 2014 by Despatch Industries. All rights reserved. No part of the contents of this manual may be reproduced, copied, or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of the publisher, unless it is for the purchaser's personal use.
LBB Series Oven Owner’s Manual Version 18 ABOUT THIS MANUAL 9 Danger! Only fully-trained and qualified personnel should setup and maintain this equipment. Improper setup and operation of this equipment could cause an explosion that may result in equipment damage, personal injury or possible death. The information in this document is not intended to cover all possible conditions and situations that might occur.
ABOUT THIS MANUAL 10 LBB Series Oven Owner’s Manual Version 18 Danger! Failure to heed warnings in this instruction manual and on the oven could result in personal injury, property damage or death. 1.4. Conventions This icon signifies information that describes an unsafe condition that may result in death, serious injury, or damage to the equipment.
LBB Series Oven Owner’s Manual Version 18 ABOUT THIS MANUAL 11 1.5. Specifications 1.5.1. Dimensions LBB Model No. Chamber Size in (cm) W 0 Capacity 3 feet (liters) D H Overall Size in (cm) W D H Shelves Maximum Chamber Provided Number of Doors on Shelf Shelf Centers Positions in (cm) 1-23 18 (46) 18 (46) 12 (30) 2.3 (65) 24 (61) 23 (58) 26 (66) 2 on 2” (5.1) 5 1 1-69 30 (76) 18 (46) 22 (56) 6.9 (195) 34 (86) 23 (58) 36 (91) 2 on 2” (5.
ABOUT THIS MANUAL 12 LBB Series Oven Owner’s Manual Version 18 1.5.2. Capacities LBB Model Number Capacity 1-23 1-69 2-12 2-18 2-27 Maximum Load Lbs (Kg) 200 (91) 400 (181) 600 (272) 600 (272) 600 (272) Maximum Shelf Load Lbs (Kgs) 50 (23) 200* (91) 200* (91) 200* (91) 200* (91) Exhaust Capacity CFM (LPS) 1 (0.5) 3 (1.4) 12 (5.7) 14 (6.6) 14 (6.6) *LBB1-69 and larger models have reinforced shelves.
LBB Series Oven Owner’s Manual Version 18 ABOUT THIS MANUAL 13 1.5.3. Power If the line voltage for your LBB Series oven varies more than 10% from the oven voltage rating, electrical components such as relays and temperature controls may operate erratically. • If the line voltage is lower than the oven voltage rating, heat-up time may be significantly longer and motors may overload or run hot. • If the line voltage is higher than the nameplate rating, motors may run hot and draw excessive amperage.
ABOUT THIS MANUAL 14 LBB Series Oven Owner’s Manual Version 18 1.5.4.
LBB Series Oven Owner’s Manual Version 18 2. Safety 2.1. Safety Information Do not work on the LBB Series oven without reading and understanding this section, which contains important information and warnings. Ignoring these warnings can result in death, serious injury or damage to the machine and product. 2.1.1. Lockout Carefully follow the established Lock Out Tag Out policies of your company in all cases.
SAFETY 16 LBB Series Oven Owner’s Manual Version 18 2.2. Provisions for Lifting and Carrying Caution! Do not tilt oven while lifting. Do not lift oven using the door handle to prevent damage to the oven and/or personnel involved. Caution! Do not risk injury when lifting equipment. Take proper precautions when lifting, carrying or otherwise maintaining heavy items. How to lift the different sizes of ovens: • LBB1-23: Four people lift oven’s lower corners and place on wheeled transport pallet.
LBB Series Oven Owner’s Manual Version 18 • • • Before performing maintenance, disconnect all electrical power from the machine. Use a padlock and lock out all disconnects feeding power to the machine. Never clean or repair the oven when in operation. Unauthorized alterations or modifications to LBB Series oven are strictly forbidden. Never modify any electrical circuits. Unauthorized modifications can impair the function and safety of the LBB Series oven.
SAFETY 18 LBB Series Oven Owner’s Manual Version 18 2.6.1. Emergency Stop When a risk of personal injury or damage to the LBB Series oven exists, turn OFF the oven by either the disconnect switch or removing/unplugging the cord. This shuts off all electrical power to the oven. 2.7. Disconnecting Devices 2.7.1. Power Requirements Despatch recommends the LBB Series Ovens have unobstructed access to a dedicated power source.
LBB Series Oven Owner’s Manual Version 18 SAFETY 19 Danger! Keep switch or circuit-breaker in building installation close to the equipment, within easy reach of the operator and clearly marked. 2.7.3. Disconnecting Corded Units LBB cord-connected ovens includes model LBB1-23. To disconnect a corded unit, unplug the cord from the power source. 2.7.4. Disconnecting Units with (Optional) Disconnect Switch The LBB Series oven has an optional Disconnect Switch (Figure 1).
THEORY OF OPERATION 20 3. LBB Series Oven Owner’s Manual Version 18 Theory of Operation 3.1. The LBB Series Oven The Despatch LBB Series ovens (Figure 2) effectively distribute heat with a processing time among the fastest of any lab oven in its class. LBB Series ovens are effectively used in testing, preheating, sterilizing, drying, aging and curing as well as other production applications.
LBB Series Oven Owner’s Manual Version 18 THEORY OF OPERATION 21 Warning! Do not remove the hat bracket as it distributes exhaust air and protects the exhaust opening from being completely covered. 3.1.1. Oven Theory The LBB Series forced circulating oven uses fans to circulate air through the chamber. A circulating oven is a much more efficient and uniform oven than a gravity-convection oven due to the constant air movement.
THEORY OF OPERATION 22 LBB Series Oven Owner’s Manual Version 18 Table 2. Control Instrument Explanations. Display Main (PV) Display Key SP OUT AL1–2 Description Typically displays actual oven temperature. Press SET/ENT to display setpoint. Displays parameter code and value. Press to switch between PV and SP displays. Enter data using or . Press repeatedly to switch through parameter displays.
LBB Series Oven Owner’s Manual Version 18 Features THEORY OF OPERATION 23 Description Increases a setpoint or mode parameter Decreases a setpoint or mode parameter Reset the High Limit, return to normal display 3.2.2.1. Product High Limit Instrument If the product being processed has a critical high temperature limit, use the High Limit instrument as a product High Limit instrument. Set the High Limit instrument to a temperature somewhat below the temperature at which the product could be damaged. 3.
ASSEMBLY & SETUP 24 4. LBB Series Oven Owner’s Manual Version 18 Assembly & Setup Assembly and Setup provides directions for unpacking and installing your Despatch LBB Series oven. 4.1. Unpack & Inspect the LBB Series Oven Remove all packing materials and thoroughly inspect the oven for any damage that might have occurred during shipment.
LBB Series Oven Owner’s Manual Version 18 ASSEMBLY & SETUP 25 4.2.2. Set-up Procedure Warning! All grounding and safety equipment must be in compliance with applicable codes, ordinances and accepted safe practices. Warning! Do not use the oven in wet, corrosive or explosive atmospheres unless this oven is specifically designed for a special atmosphere. 1. Place oven on bench top or optional cabinet base. a. Ensure a minimum of six (6) inches (15.
ASSEMBLY & SETUP 26 LBB Series Oven Owner’s Manual Version 18 Model LBB1-23 come equipped with an appropriate plug and cord. Models LBB1-69 and LBB212, -18, -27 must be hardwired to the electric supply using 10 AWG or larger wires suitable for at least 75 °C (167 °F). Figure 7. LBB Series Oven Name Plate Example. To wire the LBB Series oven (for units requiring hardwiring): 1. Remove the top cover for access to the connector block (Figure 8). Figure 8. LBB Series Oven with Top Removed.
LBB Series Oven Owner’s Manual Version 18 ASSEMBLY & SETUP 27 2. Run the wire through the rear access hole (Figure 9) and connect the appropriate wires at the connector block (Figure 10). Figure 9. Wiring Access through Rear of Oven. Figure 10. Close-up of Connector Block.
ASSEMBLY & SETUP 28 5. LBB Series Oven Owner’s Manual Version 18 Operation 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.
LBB Series Oven Owner’s Manual Version 18 OPERATION 29 The two shelves are designed to be pulled out about halfway without tipping. Do not overload the shelves (Refer to Support Capacity listed in Section 1.5.3). Distribute the workload evenly so airflow is not restricted. Do not overfill your oven. The workload should not take up more than two-thirds of any dimension of the inside cavity.
OPERATION 30 LBB Series Oven Owner’s Manual Version 18 • For sample heating, close vent when no ventilation is required 5.3. Operating Procedure—Standard Control Instrument See Protocol 3 Controller Owner's Manual for operating procedures for optional Protocol 3 control instrument. Warning! Do not use flammable solvent or other flammable material in this oven. Do not process closed containers of any substance or liquid in this oven because they may explode under heat.
LBB Series Oven Owner’s Manual Version 18 c. Press to enter the setpoint. d. Press again to display the process temperature. 5. Turn HEATER ON. a. When the process value on the Control instrument reaches setpoint, OUT cycles ON and OFF to maintain the temperature setpoint. b. OUT lights when the control calls for heat. 6. Turn HEATER OFF after the heating cycle is complete. 7. Do not turn the fan OFF until the oven chamber temperature is below 100◦C (212◦F). Figure 11. LBB Series Oven Control Panel.
OPERATION 32 LBB Series Oven Owner’s Manual Version 18 5.4. Working with the Control Instrument Danger! Failure to heed warnings in this instruction manual and on the oven could result in personal injury, property damage or death. The LBB Series oven is factory tested and the controls have been factory-set for normal operating conditions. In most applications it is not necessary to alter the oven’s settings, except for Setpoint.
LBB Series Oven Owner’s Manual Version 18 OPERATION 33 5.4.2. Control Instrument Parameter Programming Mode Warning! Changing program parameters alters the function of the Control. Proceed carefully and fully understand each parameter before changing that parameter. Control instrument parameters are set through the Operating and Set-up modes. In most applications, it is not necessary to alter the oven settings.
OPERATION 34 LBB Series Oven Owner’s Manual Version 18 Code bS Description Expressed in degrees, from –199 to 999. Use this parameter to calibrate oven temperature. LoC Provides levels of access to the controller: • 0 = No key lock, full access to controller • 1 = Prevents changing of all parameters except setpoint • 2 = Prevents all parameters from being changed including the setpoint • -1 = Set to enter the Set-up parameter setting display. nr Only when I & d are OFF. Expressed in percent.
LBB Series Oven Owner’s Manual Version 18 OPERATION 35 5.4.3. Change Control Instrument Display from Centigrade to Fahrenheit Warning! Program parameter changes will alter the function of the Control instrument. Proceed carefully and fully understand each parameter before changing that parameter. Configure the Control instrument for either °C or °F. Use the following steps to change control from displaying °C to °F: 1. Press and hold for three (3) seconds. a. CtL displays. b.
OPERATION 36 LBB Series Oven Owner’s Manual Version 18 To change from Fahrenheit to Centigrade, repeat the steps in Section 5.4.3 using In = 5, SPH = 204, SPL = 0 5.4.4. Oven Zone Calibration The Control instrument has been factory-tested and calibrated. Under normal operating conditions, recalibration should not be necessary. However, to recalibrate the Control Instrument for a specific operating condition, follow the instructions below.
LBB Series Oven Owner’s Manual Version 18 OPERATION 37 5.4.5. Set the High Limit Danger! Failure to heed warnings in this instruction manual and on the oven could result in personal injury, property damage or death. The oven has been factory-tested with the High Limit instrument factory-preset for normal operating conditions. In most applications, it will not be necessary to alter the oven's settings, except for the Setpoint.
OPERATION 38 LBB Series Oven Owner’s Manual Version 18 Set High Limit instrument parameters using the Operating and Set-up modes (Section 5.4.2.1). See section 5.4.4. to calibrate High Limit, only use SHif parameter. In most applications, it is not necessary to alter the oven settings. The following instructions describe how to access, view and, if desired, change the parameters. If the on the High Limit instrument is lit, press and hold for four (4) seconds to enable and .
LBB Series Oven Owner’s Manual Version 18 HSP.L Code HSP.H out2 OPERATION 39 Lower limit of HSP1. Minimum temperature setting for the High Limit Name Upper limit of HSP1. Description Maximum temperature setting for the High Limit Settings 204 (400 if °F) Second output Despatch does not use this function None 0 (32 if °F) diSP Normal display format.
MAINTENANCE 40 6. LBB Series Oven Owner’s Manual Version 18 Maintenance Danger! Failure to heed warnings in this instruction manual and on the oven could result in personal injury, property damage or death. Danger! Do not attempt any service on this oven before opening the main power disconnect switch. Warning! Do not place this oven in an environment harmful to electrical components.
LBB Series Oven Owner’s Manual Version 18 • • MAINTENANCE 41 faithfully. Careful operation and maintenance will be more than paid for in continuous, safe and economical operation. Maintain equipment in good repair. Make repairs immediately. Delays may be costly in added expense for labor and materials and in prolonged shut down. Practice safety. Make it a prime policy to know what you are doing before you do it.
MAINTENANCE 42 LBB Series Oven Owner’s Manual Version 18 6.3.2. Decontaminating the LBB Series Oven Warning! Do not decontaminate oven without first disconnecting power. Ensure adequate personal safety while decontaminating oven. Notice Before using any cleaning or decontamination method except those recommended by the manufacturer, users should check with the manufacturer that the proposed method will not damage the equipment. For best results, decontaminate the work zone daily. 1.
LBB Series Oven Owner’s Manual Version 18 MAINTENANCE 43 Test LBB Series oven functions regularly and carefully for best performance. Safety of personnel and maintenance of your equipment may depend on the proper operation of any of the temperature control functions. 6.4.1. Test Control Instrument Test the Control instrument every 40 hours: • Check that the Control instrument OUT LED is cycling ON and OFF • Verify that the heater works 6.4.2.
MAINTENANCE 44 LBB Series Oven Owner’s Manual Version 18 6.5.1. Replace the Control Instrument Danger! Do not attempt any service on this oven before opening the main power disconnect switch or removing all power from the oven. Tools needed: • One-quarter (1/4) inch socket set • P1 Phillips Tip Screwdriver • T20 Torx bit driver 1. Disconnect power. 2. Remove four screws from the face of the control panel (Figure 13). Figure 13.
LBB Series Oven Owner’s Manual Version 18 MAINTENANCE 45 3. Slide the panel forward (Figure 14). Support the panel while working by wedging a flat surface between the oven door and oven ceiling. Figure 14. Providing easy access to the Control instrument. 4. Remove wires from the old control instrument (using P1 Phillips screwdriver), carefully noting which wires connect to which terminals (Figure 15). High Limit Instrument Control Instrument Thermocouple wires Figure 15.
MAINTENANCE 46 LBB Series Oven Owner’s Manual Version 18 5. Move the Control instrument mounting bracket back and off (Figure 16). Control Instrument Mounting Bracket Figure 16. Prepare to remove control instrument by removing the mounting bracket. 6. 7. 8. 9. Remove old Control instrument from the panel. Install new Control instrument into the control panel. Secure instrument mounting bracket. Reattach wires to the new Control instrument. Double-check that the wires are connected correctly.
LBB Series Oven Owner’s Manual Version 18 MAINTENANCE 47 6.5.2. Replace High Limit Instrument Danger! Do not attempt any service on this oven before opening the main power disconnect switch or removing all power from the oven. Tools needed: • One-quarter (1/4) inch socket set • Screwdriver • T20 Torx bit driver 1. 2. 3. 4. Disconnect power. Remove four screws from the face of the control panel (Figure 13). Slide the panel forward (Figure 14).
MAINTENANCE 48 LBB Series Oven Owner’s Manual Version 18 Figure 19. Press and Hold Tabs to Remove High Limit Instrument. 8. Install new High Limit instrument into the control panel. 9. Replace mounting bracket. 10. Connect High Limit instrument connector plug to the circuit board (Figure 18). 11. Reattach thermocouple wires. Make sure that the wires are connected correctly. (Figure 15). See Figure 20 for correct High Limit instrument connections. 12. Reinstall control panel.
LBB Series Oven Owner’s Manual Version 18 MAINTENANCE 49 6.5.3. Replace (Optional) Protocol 3 Controller Refer to the Protocol 3 Owner’s Manual for instructions on replacing the Protocol 3 Controller. 6.5.4. Replace Heater Unit Danger! Do not attempt any service on this oven before opening the main power disconnect switch or removing all power from the oven. Tools needed: • Thin open end wrench • One-quarter (1/4) inch socket set • T15 Torx bit driver 1. Disconnect power. 2. Remove shelves (Figure 21).
MAINTENANCE 50 Terminal Ring LBB Series Oven Owner’s Manual Version 18 72” wire Flat washer Flat washer . Insulator Lock washer Hex nut 18” wire Side View Front View Install terminals as shown to prevent possible electrical shorts and/or stress on terminals. Angle tolerance: +/- 15°. Figure 22. Heater element connections.
LBB Series Oven Owner’s Manual Version 18 MAINTENANCE 51 Figure 23. Typical Heating Element (Inset connections see Figure 22) . 6.5.5. Replace Fan Motor Danger! Do not attempt any service on this oven before opening the main power disconnect switch or removing all power from the oven. Tools needed: • One-quarter (1/4) inch socket set • 5/32 inch Allen wrench • • Screwdriver T15, T20 and T30 Torx bit drivers 1. Disconnect power. 2. Remove shelves (Figure 21). 3. Remove left and right side ducts a.
MAINTENANCE 52 LBB Series Oven Owner’s Manual Version 18 7. Remove fan motor. a. Disconnect motor leads from circuit board. b. Unscrew screws (4) holding motor mounts to body (T30 Torx bit driver). c. Lift fan motor from oven body. 8. After running at temperature, the fan wheel may stick to the shaft. Separating the fan wheel from the fan motor shaft may require force. Use a drift or bass mallet as necessary to drive out the shaft (Figure 25). 9. Take motor mount off old motor. 10.
LBB Series Oven Owner’s Manual Version 18 Motor MAINTENANCE 53 Torx screw Motor mount Tinnerman clip Torx screw Motor shaft sleeve Fan wheel (spaced 0.25 from inside top) Figure 25. Separate fan wheel from fan motor shaft.
MAINTENANCE 54 7. LBB Series Oven Owner’s Manual Version 18 Troubleshooting Table 7. Common Technical Issues and Remedies. Technical Issue Failure to heat or only heats up to 30–50 °C Probably Cause No power Burned out heater(s) Control Instrument malfunction Loose wire connections Improperly loaded workload Low line voltage Slow heat up 1 or 2 heating elements burned out Vent is wide open.
LBB Series Oven Owner’s Manual Version 18 Technical Issue Oven will not control at Setpoint TROUBLESHOOTING 55 Probably Cause Debris has fallen into fan through shaft collar. High Limit instrument set too low Suggested Remedy/Next Step Inspect the wheel for damage. Remove debris. Control instrument malfunction Check control parameters before replacing Control instrument. Open exhaust air vent. Unit will not control at minimum operating temperature with vent(s) closed. Verify control parameters.
TROUBLESHOOTING 56 LBB Series Oven Owner’s Manual Version 17.1 c. The CtL parameter should be displayed. Press one of the arrow keys once and PID should be displayed, if it reads anything else, then it needs to be changed to PID. d. If the value does not change when pressing the arrow key, then the parameters are locked. e. Press and release the key several times until LOC is displayed. Press the down arrow keys and change the parameter to 0 (zero). f.
LBB Series Oven Owner’s Manual Version 18 TROUBLESHOOTING 57 Operating Parameter Outline Code CtL At P* I d Ct FL bS LoC Name Control Mode Auto-tuning Proportional Band Integral Time Derivative Time Cycle Time Input Filter PV Bias (Offset) Key Lock Settings PID OFF 5 ** 15 OFF 1 2 0 0 * If P is not displayed the CtL must be first set to PID. ** For F change to value 13. 7.2. Hi Limit L91 Hi-Limit Reset a. If the DES2000 Output LED is ON and the oven is still not heating, is the OP1 LED ON?.
APPENDICES 58 8. Appendices 8.1.
LBB Series Oven Owner’s Manual Version 18 8.2. Optional Equipment 8.2.1. Assemble Oven Stand 1. Install four rubber grommets into holes in the stand (Figure 26). a. For LBB1-69 stands, the rear grommets mount into the forward set of rear holes. b. On LBB2-12 stands the rear grommets mount into the set of holes closest to the rear of the stand. 2. Place the oven on top of the stand. The four embossed areas in the bottom of the oven should center in the grommets. 3.
APPENDICES 60 LBB Series Oven Owner’s Manual Version 18 8.2.2. End of Cycle (EOC) Timer Option Use the timer option to count down in hours toward powering the heater OFF (Figure 27). Figure 27. Timer Option Displays and Switches. Actual timer may vary from the model pictured (Figure 27).
LBB Series Oven Owner’s Manual Version 18 8.2.3.
APPENDICES 62 LBB Series Oven Owner’s Manual Version 18
LBB Series Oven Owner’s Manual Version 18 8.2.4. Parameter Default Settings 8.2.5. Timer Option with Audible and Visual Alarm The Timer option sounds an alarm and turns on a light when the timer times out. • Clear the alarm condition by turning the heater switch OFF. • Reset the timer before turning heater switch ON. • Turning the timer switch off also clears the alarm condition, but the heater remains ON. Each oven schematic (Section 8.4) shows the wiring for this option. 8.2.6.
APPENDICES 64 LBB Series Oven Owner’s Manual Version 18 8.3. Part Lists Find many parts for Despatch ovens online at www.despatch.com/parts.aspx. 8.4. Mechanical Drawing • • • • • LBB1-23: Figure 28 LBB1-69: Figure 29 LBB2-12: Figure 30 LBB2-18: Figure 31 LBB2-27: Figure 32 8.5.
LBB Series Oven Owner’s Manual Version 18 Figure 28.
APPENDICES 66 Figure 29.
LBB Series Oven Owner’s Manual Version 18 Figure 30.
APPENDICES 68 Figure 31.
LBB Series Oven Owner’s Manual Version 18 Figure 32.
APPENDICES 70 LBB Series Oven Owner’s Manual Version 18 Figure 33. LBB Standard (120 V) Schematic.
LBB Series Oven Owner’s Manual Version 18 Figure 34. LBB Standard (240 V) Schematic.
APPENDICES 72 Figure 35. LBB Opt P-3 (120 V) Schematic.
LBB Series Oven Owner’s Manual Version 18 Figure 36. LBB Opt P-3 (240 V) Schematic.
LBB Series Oven Owner’s Manual Version 18 74 3rdDraft—
