Middleby Marshall PS220, PS570 Clockwise blower wheel, Counterclockwise blower wheel, Inlet ring

3.Direction of blower rotation

Proper blower rotation is extremely important. Blower rotation is determined by viewing the motor and wheel from the REAR of the motor (or from the open end of the oven). See Figures 37-39.

Figure 37 - Clockwise blower wheel

Heat slinger	Direction
	of rotation
blades face motor

Note slant of blades

(rear view)

Figure 38 - Counterclockwise blower wheel

Direction

of rotationHeat slinger blades face motor

Note slant of blades

(rear view)

Figure 39 - Blower wheel placement

Shown from rear of oven

	Counter-
Clockwise	clockwise
	Upper left
Upper right

SECTION 3 - SERVICING COMPONENTS

4.Removing the blower wheels

To change a motor or blower wheel, the wheel must first be removed from inside the oven as follows:

•Remove the end plugs and conveyor assembly.

•From inside the oven cavity, reach into the blower recess and remove the inlet rings. See Figure 40.

•Loosen the set screw on the blower wheel hub and remove the blower wheel. A special wheel puller tool (P/N 42400-0101) is available for this purpose. See Figure 41.

IMPORTANT: Before installing the new wheel, apply an anti-seize lubricant (Middleby P/N 17110- 0017) to the motor shaft and the inside of the blower wheel hub.

Figure 40

Inlet ring

Figure 41

Blower wheel puller tool

Counter-	Clockwise
clockwise	Lower left
Lower right

75