Power Soak 37179 PS-275 Service Manual - Manual (Page 38)

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8.1 Motor and Pump
8.1a Disassembly – Turn off the electrical power to the machine at the circuit breaker
in the wall mounted enclosure and drain the wash tank. To service the pump or motor
the wash tank must be empty. Refer to the illustration in Section 10.1for the following
description: Remove the Nuts (15) holding the Adapter Plate (13) with a 9/16 wrench,
and then slide the adapter plate and motor assembly off the studs.
NOTE: This
assembly will weigh approximately 45 pounds and must be supported so that it
does not drop on the floor when it is removed.
Use a 9/16 socket and ratchet to
unscrew the bolt (4) from the center of the pump Impeller (6). Slide the impeller and
components off the motor shaft. Mark the orientation of the adapter plate to the motor
and unbolt the Motor (16) from the Adapter plate using a 5/16 Allen wrench to remove
four Bolts (12). Push the seal base for the mechanical seal out of the Adapter Plate
from the motor side (seal base exits on the pump rotor side of the plate). Push the
Shaft Sleeve (9) out of the Mechanical Seal and remove the Sleeve O-Ring (8) from the
end of the shaft sleeve (it may be stuck to the face of the impeller shaft instead of in the
shaft sleeve seal groove).
8.1b Inspection - Inspect the components for damage or signs of wear. Examine the
Adapter O-Ring (11) and the Sleeve O-Ring (8) to see that they do not have nicks, cuts
or flat spots. Both faces of the Mechanical Seal must be smooth and free of nicks or
scratches. The motor shaft must spin by hand with a smooth rotation and no rubbing
noise. Replace components if they are defective. The pump impeller must not have
cracks or deep grooves in the fins or support structure.
NEW IMPELLER
Impeller blades have been damaged by
foreign object entering the suction manifold
and lodging in the pump housing.
Impeller blades and support structure
are free of grooves and cracks
Holes are drilled by the manufacturer
for balancing the impeller
DAMAGED IMPELLERS
Note: When purchasing a new impeller, the
number of vanes and the direction of rotation (left
hand or right hand sink configuration) are critical
to receiving the correct part. Contact the Power
Soak field service department for help.