Middleby Marshall PS310 English, Ii. Maintenance - Monthly, 4 - Removing Air Fingers and Plates

ENGLISH

SECTION4-MAINTENANCE

II. MAINTENANCE - MONTHLY

NOTE

When removing the conveyor, refer to the drawings on Pages 12- 13 in the Installation section.

A.Check that the oven is cool and the power is disconnected, as described in the warning on Page 20.

B.Remove the drive motor shroud and conveyor extension covers from the oven. Disconnect the drive chain from the sprocket on the drive shaft of the conveyor.

C.Slide the conveyor out of the oven.

NOTE

Split belt conveyors can only be removed from the end of the oven with the drive motor.

Single-belt conveyor assemblies may be removed from either end of the oven. If it is to be removed from the end of the oven without the drive motor, the drive sprocket assem- bly must be removed.

To remove the drive sprocket (if necessary), loosen the set screw on the conveyor collar as shown in Figure 2-12 (on Page 12). Then, pull the sprocket assembly straight out.

D.Remove the end plugs from the oven. The end plugs are shown in Figure 1-1, on Page 4 of this Manual.

E.Slide the air fingers and blank plates out of the oven, as shown in Figure 4-4. 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.

Figure 4-4 - Removing Air Fingers and Plates

Air Finger

Blank Plate

Figure 4-5 - Disassembling the Air Fingers

Example of markings:

(Top Row) T1 T2 T3 T4 T5 T6 (Bottom Row) B1 B2 B3 B4 B5 B6

F.Disassemble the air fingers as shown in Figure 4-5. AS EACH FINGER IS DISASSEMBLED, WRITE THE "LOCA- TION 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 20 for cleaning precautions.

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

I.Replace the end plugs on the oven.

J.Reassemble the conveyor into the oven. If the drive sprocket was removed when installing the conveyor, replace it at this time.

K.Reattach the drive chain.

L.Check the tension of the conveyor belt as shown in Figure 2-15 (on Page 12). The belt should lift between 3-4" (75- 100mm). DO NOT OVERTIGHTEN THE CONVEYOR BELT. If necessary, the belt tension can be adjusted by turning the conveyor adjustment screws, located at the idler (right) end of the conveyor.

M.Replace the drive motor shroud and the conveyor exten- sions.

Manifold

Inner plate

Outer Plate

2

Pull outer plate straight up

and off

1

Step on lip of manifold

3

Swing ends of inner plate and

manifold apart

4

Pull inner plate upwards, and then away from manifold

22