Middleby Marshall PS555G GAS - Manual (Page 18)

18
ENGLISH
II. MAINTENANCE - MONTHLY
NOTE
When removing the conveyor, refer to Figure 2-9 (in Section 2,
Installation).
A. Check that the oven is cool and the power is disconnected,
as described in the warning at the beginning of this Section.
B. Remove the crumb trays and drive motor shroud from the
oven.
C. Lift the drive end of the conveyor slightly, and push it forward
into the oven. This removes the tension from the drive
chain. Then, remove the drive chain from the conveyor
sprocket.
D. Slide the conveyor out of the oven, folding it as it is removed.
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, remove the drive motor
sprocket as described in the Conveyor Installation instruc-
tions (in Section 2, Installation).
E. Remove the end plugs from the oven. The end plugs are
shown in Figure 1-1 (in Section 1, Description).
F. 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
G. Disassemble the air fingers as shown in Figure 4-4. 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.
H. 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 at the beginning of this Section
for cleaning precautions.
I. Reassemble the air fingers. Then, replace them in the
oven, using the "location code" as a guide.
J. Replace the end plugs on the oven.
K. Reassemble the conveyor into the oven. If the drive sprocket
was removed when installing the conveyor, replace it at this
time.
L. Reattach the drive chain.
M. Check the tension of the conveyor belt as shown in Figure
2-10 (in Section 2, Installation). The belt should lift between
3-4" (75-100mm). DO NOT OVERTIGHTEN THE CON-
VEYOR BELT. If necessary, the belt tension can be ad-
justed by turning the conveyor adjustment screws, located
at the idler (right) end of the conveyor.
N. Replace the crumb trays and drive motor shroud.
Figure 4-3 - Removing Air Fingers and Plates
Figure 4-4 - Disassembling the Air Fingers
Pull outer plate
straight up
and off
Manifold
Inner plate
Outer Plate
2
Step on lip of manifold
1
Swing ends of inner plate and
manifold apart
3
Pull inner plate
upwards, and
then away from
manifold
4
SECTION 4 - MAINTENANCE