LAC Series Oven Owner’s Manual Version 106 LAC-6 SERIES OVEN OWNER’S MANUAL ABOUT THIS MANUAL 1 C-194 PN 150138 VERSION 16 3/2011 Copyright © 2011 by Despatch Industries. All rights reserved.
LAC Series Oven Owner’s Manual Version 10 ABOUT THIS MANUAL 2 Revision History Revision B Date Author C D E F G H I J K L M N O 16 3/2011 K. Livingston Description Updated contents of Drawings Section Updated Protocol Plus instructions Added “Operating Environment” note to Operating section. Updated drawings. Modified Preface Modified per Rev C Protocol Plus software Various corrections Updated drawings Updated Despatch warranty. Updated drawing Update to Protocol Plus Version 4 Ref.
LAC Series Oven Owner’s Manual Version 106 ABOUT THIS MANUAL 3 Table of Contents 1. About This Manual ................................................................................................. 5 1.1. Important User Information .......................................................................... 5 1.2. Manufacturer & Service ................................................................................ 6 1.3. Organization of this Manual .......................................................
ABOUT THIS MANUAL 4 7. 8. LAC Series Oven Owner’s Manual Version 10 6.1. Checklist ..................................................................................................... 29 6.2. Lubrication .................................................................................................. 30 6.3. Routine Tests .............................................................................................. 30 6.4. Door Adjustment ...............................................................
LAC Series Oven Owner’s Manual Version 106 1. ABOUT THIS MANUAL 5 About This Manual 1.1. Important User Information Copyright © 2011 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.
LAC Series Oven Owner’s Manual Version 10 ABOUT THIS MANUAL 6 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.
LAC Series Oven Owner’s Manual Version 106 ABOUT THIS MANUAL 7 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 important information. This icon signifies information that describes an unsafe condition that may result in death, serious injury, or damage to the equipment.
LAC Series Oven Owner’s Manual Version 10 ABOUT THIS MANUAL 8 1.5. Specifications 1.5.1. Dimensions LAC Model No. Chamber Size in (cm) W * 0F D H Capacity 3 feet (liters) Overall Size in (cm) W D H Max. Number of Shelf Positions Exhaust Diameter Located on Back of Chamber in (cm) 1-10 13.75 (35) 12 (28) 12 (31) 1 (33) 23 (58) 19 (48) 29.5 (75) 5 1 (2.5) 1-38A 18.75 (48) 18 (46) 19 (48) 3.7 (105) 28 (71) 25 (64) 35.5 (90) 9 2½ (6.4) 1-38B 18.75 (48) 18 (46) 19 (48) 3.
LAC Series Oven Owner’s Manual Version 106 ABOUT THIS MANUAL 9 1.5.2. Capacities LAC-6 Model Number 1-10-6 1-38 A-6 & B-6 1-67-6 2-12-6 2-18-6 Lbs (Kg) 150 (68) 175 (79) 250 (113) 300 (136) 300 (136) Maximum Shelf Load Lbs (Kg) 50 (23) 50 (23) 50 (23) 50 (23) 50 (23) CFM (LPS) Adjustable to 5 (2.4) Adjustable to 12 (5.6) CFM (LPS) 150 (71) 300 (141) 300 (141) 600 (282) 600 (282) H.P. 1/25 ¼ ¼ ¼x2 ¼x2 Approx.
LAC Series Oven Owner’s Manual Version 10 ABOUT THIS MANUAL 10 1.5.3. Power If the line voltage for your LAC-6 Series Oven varies more than 10% from the oven voltage rating, electrical components such as relays and temperature controls may operate erratically.
LAC Series Oven Owner’s Manual Version 106 ABOUT THIS MANUAL 11 1.5.4. Temperature LAC-6 Model Number Time to Temperature (approximate minutes with no load) 40 °C – 100 °C 40 °C – 200 °C 40 °C – 260 °C Recovery Time - Door Open One Minute (approximate minutes with no load) Temperature Uniformity at 100 °C 200 °C 260 °C 1-10 1-38 A 1-38 B 1-67 2-12 2-18 8 25 40 9 32 60 6 22 36 6 20 34 6 19 31 4 17 29 1 3 7 1 6 14 1 4 8 1 3 5 1 6 9 1 4 8 § 100 °C 200 °C§ 260 °C§ ± 1 °C ± 2 °C ± 2.
LAC Series Oven Owner’s Manual Version 106 SAFETY 12 2. Safety 2.1. Safety Information Do not work on the LAC-6 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.
LAC Series Oven Owner’s Manual Version 10 2. Close all valves and bleed off any pressure. 3. Test for power by attempting a start with the machine controls. 4. Identify the Lockout Condition with a tag on the electrical disconnect and pneumatic shut off valve. 5. When work is complete, remove all tags and restore the machine to its working state. 2.1.2. Door and Panel The control panel on the LAC-6 Series Oven protect against hazards.
LAC Series Oven Owner’s Manual Version 106 SAFETY 14 Danger! Contact with energized electrical sources may result in serious injury or death. Before performing maintenance, disconnect all electrical power from the machine. Use a padlock and lockout all disconnects feeding power to the machine. Never clean, or repair the oven when in operation. Unauthorized alterations or modifications to LAC-6 Series Oven are strictly forbidden. Never modify any electrical circuits.
LAC Series Oven Owner’s Manual Version 10 2.5. Equipment Lockout Requirements To prevent injury or equipment damage during inspection or repair, the LAC-6 Series Oven must be locked out. 2.5.1. Emergency Stop When a risk of personal injury or damage to the LAC-6 Series Oven exists, turn OFF the oven by removing/unplugging the cord. This shuts off all electrical power to the oven. Copyright © 2011 by Despatch Industries. All rights reserved.
LAC Series Oven Owner’s Manual Version 106 THEORY OF OPERATION 16 3. Theory of Operation 3.1. The LAC-6 Series Oven The LAC-6 high-performance bench-top oven uses digitally-controlled, horizontal recirculating airflow to ensure uniform temperatures throughout the oven for fastprocessing (Figure 1). A high-volume fan circulates air through perforated, stainless steel walls to create a constant horizontal airflow across all sections of the oven (Figure 2).
LAC Series Oven Owner’s Manual Version 106 THEORY OF OPERATION 17 Warning! Do not remove the hat bracket (located in rear of oven) as it distributes exhaust air and protects the exhaust opening from being completely covered. 3.2. Damper Control The LAC-6 oven is equipped with a manually-adjustable damper mechanism. The damper control arm is located on the front panel of the oven (Figure 1).
LAC Series Oven Owner’s Manual Version 106 THEORY OF OPERATION 18 the recirculation motor has been ON for an extended period of time, the chamber reaches a thermal equilibrium temperature. When the damper is not set to full-open position, the chamber has no way to readily dissipate the heat generated by the friction. With the damper fully open, the thermal equilibrium temperature is the minimum operating temperature of the chamber.
LAC Series Oven Owner’s Manual Version 106 THEORY OF OPERATION 19 3.3. The Protocol Plus Controller The Protocol Plus controller has two displays. A dedicated LED upper display shows the oven temperature (Figure 4). A two line LCD lower display provides information on control status, high limit temperature and allows changes to be made to the control settings. Review the Protocol Plus Controller Owner’s Manual for more information. Figure 4. Protocol Plus Displays and Control Buttons.
LAC Series Oven Owner’s Manual Version 106 ASSEMBLY & SETUP 20 4. Assembly & Setup Assembly and Setup provides directions for unpacking and installing your LAC-6 Series Oven. 4.1. Unpack & Inspect the LAC-6 Series Oven Remove all packing materials and thoroughly inspect the oven for any damage that might have occurred during shipment.
LAC Series Oven Owner’s Manual Version 106 ASSEMBLY & SETUP 21 2. Do not expose the oven to excessive external vibration 3. Do not remove electrical cabinet covers 4. Where excessive particulate matter is present, such as on a construction site or coal processing, Despatch recommends periodic (usually monthly) cleaning of all electrical compartments. 5. Ensure the power supply meets Despatch specifications. If the facility power supply is not stable, Despatch recommends a line conditioner. 4.2.2.
LAC Series Oven Owner’s Manual Version 106 ASSEMBLY & SETUP 22 4.2.3. Wiring & Power Connections Read the Model LAC-6 name plate (top of oven or top of control area under the door) for proper power requirements before proceeding with wiring and power connections (Figure 5). Danger! All grounding and safety equipment must be in compliance with applicable codes, ordinances and accepted safe practices. Models LAC 1-10, 1-38A, 1-38B, and 1-67 come equipped with an appropriate plug and cord.
LAC Series Oven Owner’s Manual Version 106 4.2.3.1. ASSEMBLY & SETUP 23 Wire LAC-6 Models 2-12 and 2-18 For units that must be hardwired or where a power cord is shipped loose, run the power lines from the rear of the oven to the front control panel. 1. Open the knock-out near the rear-access panel (Figure 6). Power cord fitting or conduit Access plate to assist in tightening conduit fitting Figure 6. Rear Access Panel for Hard-Wired Connections. 2.
LAC Series Oven Owner’s Manual Version 106 ASSEMBLY & SETUP 24 3. Connect power at main circuit board (access by opening hinged control panel), terminals L1 and L2 (Figure 8). a. Tighten terminals on the circuit board to 10.6 to 13.2 lb-in (1.2 to 1.5 nM) b. Attach the ground wire to the ground buss on the panel. c. Close hinged control panel after attaching the power supply wires or cord. Connect power at main circuit board terminals L1 and L2. Figure 8. Power Connections at Main Circuit Board.
LAC Series Oven Owner’s Manual Version 106 ASSEMBLY & SETUP 25 4.3. MRC5000 Setup (Optional) Refer to instructions provided recorder manufacturer for more specific installation notes. Temperature is retransmitted to the MRC5000 recorder from the controller. Set up the recorder by: 1. Ensure hardware jumper JU1 is in place for the 5 VDC setting (Refer to MRC5000 Manual included). 2. Move Mode to PROG/TEST/CAL to display Prog. 3. Press ▼ twice to display Inps. Move to each Parameter Code using ▼or ▲.
OPERATION 26 5. LAC Series Oven Owner’s Manual Version 106 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.
LAC Series Oven Owner’s Manual Version 106 OPERATION 27 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 1.5.2). 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. 5.2. Pre-Startup Checklist Warning! Do not use flammable solvent or other flammable material in this oven.
OPERATION 28 LAC Series Oven Owner’s Manual Version 106 5.3. Operating Procedure For fastest oven heat-up time, close the fresh-air vent. After the desired temperature is reached, the vent may be adjusted as needed. 5.3.1. Start Oven 1. Start fan a. Open oven door b. Press Power Switch to ON (Figure 1). Listen for the recirculating fan to start. c. Shut oven door d. Check that control display turns ON. 2.
LAC Series Oven Owner’s Manual Version 106 6. MAINTENANCE 29 Maintenance Warning! 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. Placing this oven in an environment detrimental to electrical components (for example, environments where carbon fibers, coal dust or similar contaminants may be present) may result in component failure.
MAINTENANCE 30 LAC Series Oven Owner’s Manual Version 106 6.2. Lubrication Fan motor bearings are permanently lubricated. All door latches, hinges, door operating mechanisms, bearing or wear surfaces should be lubricated to ensure easy operation. 6.3. Routine Tests Test LAC-6 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.
LAC Series Oven Owner’s Manual Version 106 MAINTENANCE 31 Global Headquarters Contact Despatch Industries 8860 207th Street Lakeville, MN 55044 USA International/Main: 1-952-469-5424 US toll free: 1-888-337-7282 Fax: 1-952-469-4513 info@despatch.com www.despatch.com Service & Technical Support Service: 1-952-469-8230 US toll free: 1-800-473-7373 Fax: 1- 952-469-8193 Service @despatch.com Warning! Disconnect the main power switch or power cord before attempting any repair or adjustment. 6.5.1.
MAINTENANCE 32 LAC Series Oven Owner’s Manual Version 106 2. Remove side walls by removing the screws on the front edge of each panel (Figure 11). 3. Disconnect the heater leads from heater element with wrench. Before disconnecting leads, carefully diagram (or note) which wires connect to which terminals. 4. Unscrew the screws holding the heater frame to the oven body (Figure 12). 5. Remove heater and discard. 6. Screw down the new heater frame. 7. Attach the heater leads to appropriate terminals.
LAC Series Oven Owner’s Manual Version 106 MAINTENANCE 33 Before disconnecting leads, carefully diagram (or note) which wires connect to which terminals. 4. Unscrew the screws holding the heater frame to the oven body (Figure 12). 5. Unplug the motor harness from the circuit board and remove motor and heater ground wires from ground stud. 6. Unplug heater leads from circuit board and thermocouple leads from control. 7. Pull off fresh air damper handle from damper arm. 8.
TROUBLESHOOTING 34 7. LAC Series Oven Owner’s Manual Version 106 Troubleshooting 7.1. Troubleshooting Error Messages and Alarms Table 3 lists the more common error messages, the possible problems and remedies. Table 2. Error Messages and Next Steps. Alarm Status Possible Problem Hi-Limit LED flashing Problem with thermocouple Hi-limit setpoint has been exceeded.
LAC Series Oven Owner’s Manual Version 106 TROUBLESHOOTING 35 Table 3. Troubleshooting Oven Symptoms. Symptom Possible Cause Next Step No power Check power source and/or oven and wall fuses Broken or frayed cord Replace with new cord Replace heater (see Warranty Section 8.
APPENDICES 36 8. LAC Series Oven Owner’s Manual Version 106 Appendices 8.1. Standard Products Warranty Copyright © 2011 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 Despatch Industries, unless for purchaser's personal use.
LAC Series Oven Owner’s Manual Version 106 8.2. APPENDICES 37 Electrical Schematics The following pages contain electrical schematics and data for the LAC1-10-6, LAC138A-6, LAC1-38B-6, LAC1-67-6, LAC2-12-6 and LAC2-18-6 ovens. Copyright © 2011 by Despatch Industries. All rights reserved.
APPENDICES 38 LAC Series Oven Owner’s Manual Version 106 Figure 13. LAC1-10-6 (Excerpt from drawing 146271D01). Copyright © 2011 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 Despatch Industries, unless for purchaser's personal use.
LAC Series Oven Owner’s Manual Version 106 APPENDICES 39 Figure 14. LAC1-38A-6 (Excerpt from drawing 146273D01). Copyright © 2011 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 Despatch Industries, unless for purchaser's personal use.
APPENDICES 40 LAC Series Oven Owner’s Manual Version 106 Figure 15. LAC1-38B-6 (Excerpt from drawing 146275D01). Copyright © 2011 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 Despatch Industries, unless for purchaser's personal use.
LAC Series Oven Owner’s Manual Version 106 APPENDICES 41 Figure 16. LAC1-67-6 (Excerpt from drawing 146277D01). Copyright © 2011 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 Despatch Industries, unless for purchaser's personal use.
APPENDICES 42 LAC Series Oven Owner’s Manual Version 106 Figure 17. LAC2-12-6 (Excerpt from drawing 146279D01). Copyright © 2011 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 Despatch Industries, unless for purchaser's personal use.
LAC Series Oven Owner’s Manual Version 106 APPENDICES 43 Figure 18. LAC2-18-6 (Excerpt from drawing 146281E01). Copyright © 2011 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 Despatch Industries, unless for purchaser's personal use.
LAC Series Oven Owner’s Manual Version 106 44 3rdDraft— Despatch INDUSTRIES GLOBAL HEADQUARTERS Despatch Industries 8860 207th Street West Minneapolis, MN 55044 USA US toll free: 1-888-337-7282 international/main: 1-952-469-5424 fax: 1-952-469-4513 info@despatch.com www.despatch.com SERVICE AND TECHNICAL SUPPORT service parts: 1-800-473-7373 international service/main: 1-952-469-8230 service fax: 1-952-469-8193 service@despatch.com © 2010 Despatch Industries. All rights reserved.
