MAINTENANCE LBB Series Oven Owner’s Manual
52 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.
a. Remove screws from the heater
cover.
b. Remove heater cover from the oven.
5. Loosen setscrews (2) on fan wheel in
middle of oven top. Access the fan
wheel through the heater opening or by
disconnecting and removing the heater
assembly. Refer to Section 6.4.4 for
information on removing the heater unit.
6. Remove top cover to reveal fan motor
(Figure 23).
7. Remove fan motor
a. Disconnect motor leads from circuit
board
b. Unscrew screws (4) holding motor
mounts to body
c. Lift fan motor from oven body.
8. After running at temperature, the fan
wheel may stick to the shaft. Separating
the fan wheel from the fan motor shaft
may require force.
9. Take motor mount off old motor.
10. Put motor mount onto new motor.
11. Replace fan motor.
a. Reattach motor to oven body.
b. Reattach motor lead plug to circuit board.
12. Replace top cover.
13. Put fan wheel onto shaft from inside of oven.
14. Adjust fan wheel for 3/16-inch clearance between wheel and inlet ring.
15. Tighten setscrews on the fan wheel.
16. Check that setscrews hit the flats machined into the motor shaft.
17. Replace heater pan assembly if removed. Refer to Section 6.4.4 for information on
removing the heater unit.
18. Replace heater cover.
19. Replace side ducts.
20. Replace shelves.
Figure 23. Fan Motor Location and Close-up.
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