Despatch RAD1-42-2E with Protocol Plus - Manual (Page 63)

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Fan Motor
(Tools needed: Screwdriver, 5/32 inch Allen wrench, one quarter (¼) inch socket set)
1.
Remove the left and right inside walls.
2.
Remove the chamber floor plate from the oven.
3.
Remove the fan inlet plate.
4.
Loosen the set screws (2) on fan wheel.
5.
Remove the side access panel. This will reveal the fan motor.
6.
Remove the fan motor.
a. Disconnect the motor leads from the circuit board.
b.
Remove the screws (4) holding motor to the base.
c.
Lift the fan motor from the oven body.
After the fan wheel has run at temperature for awhile, it will stick to the shaft.
Some force may be required to separate the fan wheel from the fan motor shaft.
7.
Replace the fan motor.
a. Insert the shaft into shaft collar. Put the fan wheel onto shaft from inside
oven.
b.
Reattach the motor to motor base.
c.
Reattach the motor lead wires to the circuit board.
8.
Adjust the fan wheel for 3/16 inch clearance between the wheel and the inlet ring.
9.
Tighten the set screws on the fan wheel.
10.
Check that the set screws hit the flats machined into the motor shaft.
11.
Replace the chamber floor plate.
12.
Replace the left and right side walls.
13.
Replace the side access panel.