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Despatch LAC-6 Series - User Manual

Despatch LAC-6 Series
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LAC Series Oven Owner’s Manual ABOUT THIS MANUAL
Version 106 1
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.
ULTRAFLEX DRYING AND FIRING
FURNACE
MODELS 1000, 3615, 3630, 3640
OWNERS MANUAL
C-204
VERSION 10
10/2008
LAC-6 SERIES OVEN
OWNER’S MANUAL
C-194
PN 150138
VERSION 16
3/2011

Table of Contents

Questions and Answers

  • T
    Tony MeyerAug 19, 2025
    Why Despatch LAC-6 Oven fails to heat or only heats to 35-50 degrees C?
    • C
      cherylnelsonAug 19, 2025
      There are several potential reasons why your Despatch Oven might not be heating correctly. It could be due to: * No power: Check the power source, oven, and wall fuses. * A broken or frayed cord: Replace the cord. * A burned-out heater: Replace the heater. * A Protocol™ malfunction: Replace the controller. * Loose wire connections: Disconnect power and check connections behind the control panel. * Heater relay failure: Replace the circuit board. * Door switch failure: Replace the door switch.
  • V
    Victoria TaylorAug 21, 2025
    What to do if my Despatch LAC-6 has erratic or inaccurate temperature?
    • J
      jjohnsonAug 21, 2025
      If you're experiencing erratic or inaccurate temperatures with your Despatch Oven, consider the following potential causes: * Protocol™ Plus Controller malfunction: Replace the Protocol™ Plus Controller. * Improper tuning parameters: Check the tuning parameters. * Hi-limit setting: Ensure the Hi-limit is set 10-25°C higher than the setpoint. * Improper offset: Check zone calibration.
  • C
    Christopher SmithAug 25, 2025
    What to do if my Despatch LAC-6 is slow to heat up?
    • D
      Dawn WardAug 25, 2025
      If your Despatch Oven is heating up slowly, the issue could be due to: * Improper loading: Reduce or redistribute the load in the chamber. * Low line voltage: Ensure sufficient power and proper connections, and check for circuit overload. * Burned out heating element(s): Replace any burned-out elements. * A 240-volt oven connected to a 208V line: Raise the line voltage to 240 volts or modify the oven for 208V operation (consult factory). * Fan motor failure: Replace the fan motor.
  • B
    Brenda EllisAug 26, 2025
    What to do if my Despatch LAC-6 will not control at setpoint?
    • O
      olopezAug 26, 2025
      If your Despatch Oven isn't controlling at the setpoint, it could be due to: * Hi-limit set too low: Set the Hi-limit higher. * Protocol malfunction: Replace control. * SSR malfunction: Replace SSR and/or check control output voltage. * Air friction of recirculation fan: Open the exhaust air vent. Note that the unit will not control below the minimum operating temperature with the vent closed.
  • S
    Sara AguirreAug 28, 2025
    What to do if my Despatch LAC-6 Oven has frequent heater element burnout?
    • A
      Alicia VillarrealAug 28, 2025
      If you're experiencing frequent heater element burnout in your Despatch Oven, consider these possible causes: * Harmful fumes generated by the load: Increase vent opening or discontinue the process. * Spillage or splattering of material on heater elements: Disconnect power and clean the oven chamber and elements. * Overheating oven: Check the Hi-limit.
  • B
    Brian WilliamsAug 30, 2025
    What does it mean when the Hi-Limit LED is flashing on my Despatch LAC-6?
    • M
      Michael HaynesAug 30, 2025
      If the Hi-Limit LED is flashing on your Despatch Oven, it indicates that the Hi-limit setpoint has been exceeded. Once the problem has been corrected, press Reset.
  • L
    Lisa LeachSep 1, 2025
    What does it mean when the Soak LED is flashing on my Despatch LAC-6 Oven?
    • J
      John TorresSep 1, 2025
      If the Soak LED is flashing on your Despatch Oven, it means the oven temperature has not entered (or has dropped out of) the soak band, and the soak timer has stopped. Program a slower ramp rate, or if the oven is not heating, check the heater circuit.
  • C
    Christine KellySep 3, 2025
    What to do if my Despatch Oven heater does not shut down until temperature reaches the Hi-limit setting?
    • S
      santiagojaclynSep 4, 2025
      If the heater in your Despatch Oven doesn't shut down until the temperature reaches the Hi-limit setting, it could be due to: * Protocol malfunction: Replace Protocol. * SSR malfunction: Replace SSR.
  • Y
    ybrownSep 5, 2025
    Why is there excessive vibration in my Despatch LAC-6?
    • R
      Roy HurleySep 5, 2025
      Excessive vibration in your Despatch Oven can be caused by: * A dirty fan wheel: Clean the fan. * An unbalanced fan wheel: Replace the fan wheel.
  • C
    christinamillsSep 7, 2025
    What causes improper airflow in a Despatch LAC-6 Oven?
    • C
      Cheyenne ReyesSep 7, 2025
      Improper airflow in your Despatch Oven can stem from: * Fan motor failure: Replace the fan motor. * Fan wheel seated too low on fan shaft: Adjust the fan wheel for 3/16" clearance between the wheel and the inlet ring. * Unbalanced fan wheel: Replace the fan wheel.

Despatch LAC-6 Series Specifications

General IconGeneral
BrandDespatch
ModelLAC-6 Series
CategoryOven
LanguageEnglish

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