Middleby Marshall PS360WB Ii. Maintenance - Monthly, 3 - Removing Fingers and Plates

II. MAINTENANCE - MONTHLY

A.Check that the oven is cool and the power is discon- nected, as described in the warning on Page 4-1.

B.Remove the conveyor from the oven. (Pages 2-9 to 2-11 describe the installation of the conveyor; per- forming this procedure in reverse allows the con- veyor to be removed.)

C.Slide the air fingers and blank plates out of the oven, as shown in Figure 4-3. AS EACH FINGER OR PLATE IS REMOVED, WRITE A "LOCATION CODE" ON IT WITH A MARKER to make sure that it can be reinstalled correctly.

Example of markings:

(Top Row) T1 T2 T3 T4 T5 T6

(Bottom Row) B1 B2 B3 B4 B5 B6

D.TRI TANDEM OVENS ONLY: To remove the air fingers from the center section of the oven, the air finger retaining screws must be removed. See Figure 2-7 (Page 2-5).

E.QUAD TANDEM OVENS ONLY: To remove the air fingers from the two center sections of the oven, the transition must be disassembled. (Pages 2-7 to 2-8, and Page 2-11, describe the assembly of the transi- tion. Performing this procedure in reverse allows the transition to be disassembled.)

F.Disassemble the air fingers as shown in Figure 4-4.

AS EACH FINGER IS DISASSEMBLED, WRITE THE "LOCATION CODE" FOR THE FINGER ON ALL THREE OF ITS PIECES. This will help you in correctly reassembling the air fingers.

CAUTION

Incorrect reassembly of the air fingers will change the baking properties of the oven.

G.Clean the air finger components and the interior of the baking chamber using a vacuum cleaner and a damp cloth. Refer to the boxed warnings on Page 4- 1 for cleaning precautions.

H.Reassemble the air fingers. Then, replace them in the oven, using the "location code" as a guide.

I.Reassemble the conveyor into the oven, and reat- tach the drive chain. Once again, refer to Pages 2- 9 to 2-11 if necessary.

J.Check the tension of the conveyor belt as shown in Figure 4-5. The belt should lift between 3-4" (75- 100mm). DO NOT OVERTIGHTEN THE CON-

VEYOR BELT.

The belt tension can be adjusted by turning the conveyor adjustment screws, located at the idler end of the conveyor.

SECTION 4

MAINTENANCE

Figure 4-3 - Removing Fingers and Plates

Air Finger

Blank Plate

Figure 4-4 - Disassembling the Air Fingers

Manifold

Inner plate

Outer Plate

2.
Pull outer plate	3.
straight up	Swing ends of
and off	inner plate and
	manifold apart

4.

Pull inner plate upwards, and then away from manifold

1. Step on lip of manifold

Figure 4-5 - Checking the Conveyor Belt Tension

Lift here

Conveyor

adjustment

screws

(2 per conveyor)

4-3