User Manual

OPERATION LBB Series Oven Owner’s Manual
38 Version 15
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
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.
5.4.5. Set the High Limit
Danger!
Failure to heed warnings in this instruction manual and on the
oven could result in personal injury, property damage or death.
The oven has been factory-tested with the High Limit instrument factory-preset for normal
operating conditions. In most applications, it will not be necessary to alter the oven's settings,
except for the Setpoint. This section contains information and reference material to change
Setpoint, access the Set-up mode and change display between °C and °F.
The High Limit instrument was carefully programmed at the factory using the Operating and Set-
up mode. The parameters that may be accessed include; display functions, and thermocouple
selection.
5.4.5.1. Change the High Limit Instrument Setpoint
Warning!
Never operate oven at a temperature in excess of the maximum
operating temperature of 204°C (400°F).
Enter setpoint on the High Limit instrument. Set High Limit instrument to a temperature 10°C to
14°C higher than the setpoint or to a temperature that should not be exceeded in the process.
1. If on the High Limit instrument is lit, press and hold for four (4) seconds to
enable and .
2. Press , HSP1 will light.
3. Use and to set High Limit temperature.
4. Press or once to return (also enters the value) to the process variable PV
mode.
5. If the High Limit instrument is exceeded the heater will shut down.
6. Reset the High Limit instrument by pushing on the High Limit instrument.