Despatch LBB 1-23, Owner'S Manual

Page: 53 / 65

LBB Series Oven
Owner’s Manual
M
AINTENANCE
Version 20 53
7. Remove fan motor.
a.
Disconnect motor leads from circuit board.
b. Unscrew screws (4) holding motor mounts to body (T30 Torx bit driver).
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. Use a drift or bass mallet as necessary to drive
out the shaft (Figure 25).
9. Take motor mount off old motor.
10. Put motor mount onto new motor (T20 Torx bit driver).
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. Reinstall heater pan assembly if
removed. Refer to Section 6.5.4 for
information on removing the heater
unit.
18. Reinstall heater cover.
19. Reinstall side ducts.
20. Reinstall shelves.
Figure 24. Fan Motor Location.