Instruction Manual

LAC Series Oven Owner’s Manual APPENDICES
Version 1 43
Copyright © 2012 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
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retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
8.2.2. Optional Pneumatic and Electronic Door Lock
The LAC-7 Series oven pneumatic and electronic door lock option prevents the door from being
opened if a Protocol 3 controller event is active.
8.2.3. Optional Interior Light
The LAC-7 Series oven optional interior light allows users to see inside the oven during
operation. The interior lights uses a 50W bulb mounted inside the oven. Control the optional
interior light using the ON/OFF switch mounted on the oven control panel (labeled “INTERIOR
LIGHT”).
8.2.4. Optional Door Interlock Switch (Controls Heater & Fan)
The LAC-7 Series oven optional door interlock switch automatically shuts OFF either the heater
only or both the heater and fan when the door is opened. This option provides an extra measure
of safety for the user.
8.2.5. Optional High Limit Alarm with Alarm Silence
The LAC-7 Series oven optional High Limit Alarm provides an audible and visual alarm when
the temperature exceeds the High Limit setpoint on the control. The alarm horn is typically
located to the right of the control panel door.
When the chamber temperature exceeds the High Limit setting on the control, the heater shuts
down, the alarm horn sounds and the red push button switch will illuminate.
To silence the alarm:
1. Depress the Alarm Silence switch.
a. This silences the alarm horn.
b. The red push button switch remains illuminated.
2. Clear the alarm by correcting the High Limit condition.
3. When the High Limit condition clears, press Reset on the control. See Protocol 3 Owner’s
Manual for detailed operation.
4. The red push button switch will go off, the heater switches on and the control is functioning
correctly.
5. If the High Limit trips repeatedly, identify the cause and correct the problem.

When the alarm is triggered by the end of cycle, the alarm will
continue to be active until another process is started.