EasyManua.ls Logo

Despatch LAC 2-18-8 - User Manual

Default Icon
56 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
LAC/LFC Series Oven Owner’s Manual PREFACE
Version 1.12 1
Copyright © 2018 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 1
10/2008
LAC/LFC SERIES OVEN WITH
PROTOCOL 3™ CONTROLLER
OWNER’S MANUAL
C-266
PN 337069
VERSION 1.12
05/2018

Table of Contents

Questions and Answers

  • O
    Oscar SmithAug 14, 2025
    Why Despatch LAC 2-18-8 is not heating up properly?
    • M
      mccartymiguelAug 14, 2025
      There are several reasons why your Despatch oven might not be heating correctly. It could be due to: * No power: Check the power source and fuses. * A broken or frayed cord: Replace the cord. * A burned-out heater: Replace the heater. * A malfunctioning controller: Replace the controller. * Loose wire connections: Disconnect the power and check the connections behind the control panel. * Heater relay failure: Replace the circuit board or SCR. * Airflow switch malfunction: Refer to Section 6.5.1 * Door switch failure: Replace the door switch.
  • A
    Angela BrowningAug 17, 2025
    What to do if my Despatch Oven heats up too slowly?
    • A
      angelafuentesAug 17, 2025
      If your Despatch oven is heating up slowly, it could be due to several factors: * The oven is improperly loaded. Try reducing the load or redistributing it within the chamber. * There is low line voltage. Ensure sufficient power and proper connections, and check for circuit overload. * Heating elements are burned out. Replace any burned-out elements. * A 240-volt oven is 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.
  • H
    hramosAug 20, 2025
    Why does my Despatch Oven have erratic temperature?
    • T
      Tammy SmithAug 21, 2025
      Erratic or inaccurate temperature in your Despatch oven can be caused by: * A malfunctioning controller. Replace the controller. * Improper tuning parameters. Check the tuning parameters. * Controller miscalibration. Recalibrate the controller (See Protocol 3 Owner’s Manual, sections on Calibration). * High Limit setting. The High Limit should be 10-25°C higher than the setpoint. * Improper offset. Check zone calibration.
  • C
    Christina FosterAug 25, 2025
    What causes frequent heater element burnout in Despatch Oven?
    • C
      Christian HowardAug 25, 2025
      Frequent heater element burnout in your Despatch oven can be attributed to: * Harmful fumes generated by the load. Increase vent opening or discontinue the process. * Splattering of material on heater elements. Disconnect power and clean the oven chamber and elements. * Overheating oven. Check the High Limit. * Fan motor failure. Replace the fan motor.
  • A
    Amanda GrantAug 27, 2025
    Why Despatch Oven will not control at setpoint?
    • J
      Jesse FigueroaAug 27, 2025
      If your Despatch oven isn't controlling at the setpoint, consider these potential causes: * High Limit set too low: Set the High Limit higher. * Controller malfunction: Check controller settings or replace the controller. * SSR malfunction: Replace the SSR and/or check control output voltage. * Air friction of recirculation fan: Open fresh air or exhaust air vent. Note that the unit will not control below the minimum operating temperature with the vent closed.
  • R
    Rebecca StanleyAug 30, 2025
    Why is the surface or door temperature of my Despatch LAC 2-18-8 excessive?
    • R
      Rebecca WuAug 31, 2025
      Excessive surface or door temperature on your Despatch oven may be due to: * Door seal deterioration: Replace the door seal. * Oven over pressurization: Close the fresh air damper or, on LFC, open the exhaust damper.
  • T
    toddmillerSep 3, 2025
    What causes excessive vibration in my Despatch LAC 2-18-8?
    • R
      robersonjacobSep 3, 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.
  • N
    Nathan StewartSep 6, 2025
    What causes improper airflow in Despatch LAC 2-18-8 Oven?
    • B
      Brooke GarciaSep 7, 2025
      Improper airflow in your Despatch oven can be caused by: * 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 inlet ring.
  • A
    Allison HubbardSep 9, 2025
    What to do if the heater of Despatch Oven does not shut down until it reaches the High Limit setting?
    • D
      Dakota DuranSep 10, 2025
      If the heater in your Despatch oven continues to run until it reaches the High Limit setting, it could be due to: * Controller malfunction: Replace the controller. * SSR malfunction: Replace the SSR.

Summary

Warning!

Hi-Limit Controls

Information and recommendation regarding hi-limit controls for ovens.

Specifications

Solvent Capabilities

Safety

Safety Information

General safety guidelines and warnings for oven operation.

Lockout

Procedures and requirements for electrical lockout.

Lockout Requirements

Specific requirements for safely locking out power sources.

Lockout Procedure

Step-by-step instructions for performing a lockout.

Electrical Power

Fire

Equipment Lockout Requirements

Emergency Stop

How to use the emergency stop function.

Disconnecting Devices

Power Requirements

Disconnecting Hard-Wired Units

How to disconnect ovens that are hard-wired.

Capacities

Solvent Capacity

Power

Temperature

Door and Panel

Provisions for Lifting and Carrying

Maintenance

Checklist

Disconnecting Corded Units

Disconnecting Units with Optional Disconnect Switch

Airflow Switches: Recirculation and Forced Exhaust

Theory of Operation

The LAC-8 Series Oven

LFC Specific Operation

Damper Control

The Protocol 3 Controller

Assembly & Setup

Unpack & Inspect the LAC-8 Series Oven

If Damaged During Shipping

Set-Up the LAC-8 Series Oven

Select Oven Location;Operating Environment

Set-up Procedure

Wiring & Power Connections

Wire LAC-8 Models 2-12 and 2-18

Operation

Load Oven

Pre-Startup Checklist

Operating Procedure

Start Oven

Working with Protocol 3 Operating Modes

Test Airflow Switch and Purge Timer (LFC only; safety)

Cleaning and Decontamination

Cleaning the LAC-8 Series Oven

Decontaminating the LAC-8 Series Oven

Routine Tests

Recirculation and Exhaust Airflow Switch Test Operation

How to test the recirculation and exhaust airflow switches.

Alternative Method of Checking Power, Switches and Timer

Recirculation And Exhaust Airflow Switch Adjustment

Summary Switch Conditions

Door Adjustment

Replacement Parts

Replace the Protocol 3 Controller

Replace Heater Unit

Replace Fan Motor

Troubleshooting

Troubleshooting Symptoms

Lists common symptoms, causes, and remedies for oven issues.

Troubleshooting Error Messages and Alarms

Optional High Limit Alarm with Alarm Silence

Despatch LAC 2-18-8 Specifications

General IconGeneral
BrandDespatch
ModelLAC 2-18-8
CategoryOven
LanguageEnglish

Related product manuals