MAINTENANCE
5-2
5.2 WEEKLY
1. Check the machine for leaks.
a) Start an unloaded cycle to fill the machine.
b) Verify that door and door gaskets do not leak.
c) Verify that the drain valve is operating. If water does not leak out during the prewash
segment, drain valve is closed and functioning properly.
2. Clean the AC drive box air filters.
a) Snap off the external plastic cover which contains the filter. Remove the foam filter
from the cover.
b) Wash the filter in a mild soap solution or vacuum it clean. Replace if damaged.
Operating the machine without filter will cause premature inverter failure.
5.3 MONTHLY
NOTE: Disconnect power to the machine at its source before performing the monthly
maintenance procedures.
1. Each month or after every 200 hours of operation, lubricate bearing and seals. See
instructions on the machine.
a) Use premium grade lithium complex grease. Never mix two types of grease.
b) Pump the grease gun slowly, permitting only the following number of strokes:
• Bearing grease fitting, 2 strokes
• Seal grease fitting, 1 stroke.
Do not pump the grease gun if grease comes out of the bearing housing. This can result in
over lubrication, causing damage to bearings and seals.
2. If the machine is provided with automatic lubricators, check that they are injecting grease.
Normally they last for approximately one year. Mark new lubricators with installation
date.
3. Clean the AC drive fins:
a) Remove the AC drive box cover.
b) Blow the fins clean using compressed air at a pressure of 60 – 90 psi (4 – 6 Bar) or by
using canned compressed air. Use care to avoid damaging cooling fan or other
components.
NOTE: No amount of visible foreign matter should be allowed to accumulate on fins or
the finger guard.
4. Use the following procedures to determine if V – belts require replacement or adjustment.
Call a qualified service technician in either case.
a) Check V – belts for uneven wear and frayed edges.
b) After disconnecting power to the machine and removing all panels necessary for
access to the drive belts, use the following method to verify that the V – belts are
properly tensioned. Belt tensioning is straight forward, and accomplished by
loosening the tension adjusting bolts and adjusting the belts to the proper tension.
Then the bolts should be tightened. See figure 5-2.
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