Middleby Cooking Systems Group Gas Oven PS770 - Manual (Page 21)

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E. Blower Belts
1. To gain access to each blower belt compartment remove
the four screws shown in Figure 4-8. Then, lift the rear
shroud off its hangers.
If access to the blower motors is required, remove the
three mounting screws (two on the front of each shroud
and one on the rear). Then, lift the end shroud straight up
and off its hangers.
2. Check each blower belt for cracking or excessive wear.
3. Check for amount of belt deflection in the center of the
belt, 1/2″ deflection is acceptable, see Figure 4-9.
4. If necessary, replace belt.
IV. MAINTENANCE - EVERY 6 MONTHS
A. Check that the oven is cool and the power is disconnected
as described in the warning at the beginning of this Section.
B. For gas ovens, clean and inspect the burner nozzel and
electrode assembly.
C. Check (and clean, if necessary) the oven venting system.
D. Check the conveyor drive shaft bushings and spacers.
Replace the components if they are worn.
Figure 4-9 - Belt Deflection