Prochem Spot Pro - Manual (Page 9)

MAINTENANCE
980238 04/21/05
4-1
DAILY MAINTENANCE :
Follow same procedure for Shut Down and Storage.
PERIODIC MAINTENANCE :
1. Twice a month, flush a white vinegar solution
(one quart vinegar to two gallons water) or anti-
browning solution (mixed as directed) through
the extractor. This will prevent build-up of
alkaline residue in the system.
2. If spray jet becomes clogged, remove the spray
tip, wash it thoroughly, and blow dry. NOTE: D O
NOT USE PINS , WIRE , ETC . TO CLEAN NOZZLE AS
THIS COULD DESTROY THE SPRAY PATTERN .
3. Apply silicone lubricant to solution nipple.
4. Periodically inspect all hoses, electrical cable
and connections on your machine. Frayed or
cracked hoses should be repaired or replaced to
eliminate vacuum or solution pressure loss. If
the cable insulation on the power cord is broken
or frayed, repair or replace immediately. Don’t
take chances with electrical fire or shock.
Only qualified maintenance personnel are to perform
the following repairs.
SOLUTION PUMP REPLACEMENT:
1. Turn off all switches and unplug the machine.
2. Unlatch and remove recovery tank.
3. Unfasten screws holding vacuum motor housing
to solution tank.
4. Unfasten screws holding pump plate to bottom
of solution tank.
5. Remove solution hoses from fittings on pump.
6. Remove pump from brackets and remove fittings
and grounding wire.
7. Reverse process to install new replacement
pump.
VACUUM MOTOR REPLACEMENT:
1. Turn off all switches and unplug machine.
2. Unlatch and remove recovery tank.
3. Unfasten screws holding vacuum motor retainer
to vacuum motor housing
4. Lift vacuum motor from vacuum motor housing.
Locate the vacuum motor wires and disconnect
at the connector.
5. Remove vacuum motor.
6. Reverse process to install vacuum motor
replacement.
Vacuum Motor Carbon Brushes Replacement
WARNING: The green
ground wire must be
attached for safe operation.
See wiring diagram.
End Cap
Carbon
Brushes
If armature commutator is grooved, extremely pitted or not
concentric, the motor will need to be replaced or sent to a
qualified service center.
Important:
These brushes wear quicker as the length shortens due to
increased heat. Spring inside brush housing will damage
motor if brushes are allowed to wear away completely.
Periodically check the length of the carbon brushes. Replace
both carbon brushes when either is less than 3/8" (9.5mm)
long.
3
8
[9.5mm]