Despatch LBB Series User Manual

TROUBLESHOOTING LBB Series Oven Owner’s Manual
54 Version 13
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.
Technical Issue
Probably Cause
Suggested Remedy/Next Step
Debris has fallen into
fan through shaft
collar.
Inspect the wheel for damage. Remove debris.
Oven will not
control at
Setpoint
Hi-Limit instrument set
too low
Set the Hi-Limit higher.
Control instrument
malfunction
Check control parameters before replacing
Control instrument.
Air friction of
recirculation fan
Open exhaust air vent. Unit will not control at
minimum operating temperature with vent(s)
closed.
Heater does not
shutdown until
temp. reaches
the Hi-Limit
setting
Control instrument
malfunction
Verify control parameters. Replace control
instrument if no output exists.
SSR Relay
malfunction
Replace relay if Control output exists.
Door closes into
top or bottom
latch only
Uneven latch tension
adjustment
Ensure that latch strike is contacting center of
latch. Adjust mounting angle as required. Adjust
door for even top and bottom latch tension by
turning screws on ends of latch. Clockwise
increases tension on latch. Counterclockwise
decreases tension.
Door will not
stay closed
Inadequate latch
tension
Ensure that latch strike is contacting center of
latch. Adjust mounting angle to center as
required. Increase latch tension by turning
screws on end of latch clockwise. Adjust in even
increments on all four screws to keep door pull
even.

Despatch LBB Series Specifications

General

Brand	Despatch
Model	LBB Series
Category	Oven
Language	English