LAC/LFC Series Oven Owner’s Manual MAINTENANCE
Version 1.12 41
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.
6.5. Routine Tests
Test LAC-8 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.
Check that the heater LED is cycling on and off, indicating the heater is working.
Check the High Limit function to make sure it is working properly:
1. Press Select and go to Manual Mode. Enter a control setpoint value at least 11°C (20°F)
lower than the current process temperature.
2. Press Menu and lower the High Limit setpoint to a value just below the current process
temperature.
3. Press Run.
4. The High Limit alarm indicator will flash and a High Limit alarm message will display.
5. Press Stop.
6. Press Reset.
7. Return the control setpoint and High Limit setpoint values to their original values.
6.5.1. Recirculation and Exhaust Airflow Switch Test Operation
1. Turn oven main power switch to OFF.
2. Verify that indicator flag on the exhaust and recirculation airflow switches are in the OFF
position (Figure 14).
2.1. When the switch is in the OFF position the electrical contacts within the airflow switch
are open, preventing the oven heater from operating.
3. Turn power to oven on
3.1. With oven at ambient temperature, inspect airflow switch indicator to verify that it
moves upward to the ON position.
3.2. When the airflow switch moves to the ON position, the electrical contacts will close.
The contacts are part of the safety circuit that allows the heater to operate.
To Next Page
Loading...
Need help?
General
