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II. MAINTENANCE – MONTHLY
NOTE:
When removing the conveyor, refer to Figure 2-12 (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 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 con-
veyor 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 drive motor, remove the
drive motor sprocket as described in the
Conveyor
Installation instructions (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 4-2. 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 4-3. 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.
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 guide” 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
2-14 (in Section 2,
Installation). 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.
N. Replace the crumb trays.
Figure 4-2. Removing Air Fingers and Plates
Figure 4-3. Disassembling the Air Fingers
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