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Maintenance
27
F232201
Monthly
NOTE: Disconnect power to the washer-extractor
at its source before performing the monthly
maintenance procedures.
1. Each month OR after every 200 hours of
operation, lubricate bearings. (Locate the bearing
lubrication decal at the rear of the right side of
the machine, as viewed from the front of the
washer-extractor.)
The grease must have the following
characteristics:
• NLGI Grade 2
• Lithium-based
• Water-insoluble
• Anti-rusting
• Anti-oxidizing
• Mechanically stable
The grease must have adequate base oil viscosity
with one of the following ratings:
• ISO VG 150 (135 – 165 cSt at 40°C or
709 – 871 SUS at 100°F)
• ISO VG 220 (198 – 242 cSt at 40°C or
1047 – 1283 SUS at 100°F)
• An SAE 40 rating is also acceptable as long as
the cSt or SUS values are within the specified
ranges.
Pump the grease gun slowly, permitting only
2strokes.
2. 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 washer-
extractor and removing all panels necessary
for access to the drive belt, use one of the
following methods to verify that V-belts are
properly tensioned.
• Tension Gauge. Loosen motor mounting
bolts and slide motor along motor plate to
change belt span length. The belt tension on
UW35 – UW125 models should be between
70 and 90 pounds (± 5 pounds). The belt
tension on the UW150 should be between
130 and 150 pounds (± 5 pounds). (Set initial
tension toward the high end of this range.)
The UW150 uses a swing mount motor with
an adjustable spring used for tensioning.
• Deflection. Refer to Figure 12. Loosen motor
mounting bolts and slide motor along motor
plate to change belt span length. Belt tension
measurements should be taken as close to the
center of the belt span as possible. For every
inch of span length, the belt should deflect
1/64 inch (0.40 mm). Thus, a belt with span
length of 50 inches should deflect 50/64 inch
(19.84 mm). An initial (run-in) force of
5.25 pounds should be used to set the belt
tension. An operating (normal) force of
3.5 pounds should be used after the washer-
extractor has been operated for a few hours.
Figure 12
P044I
1 Deflection
2 Span Length
1
2