Pacific ScrubMaster 32B Service Manual - page 36
INSPECTION OF ELECTRICAL EQUIPMENT
Check the functionality of electrical components.
1. Disconnect the battery plug.
2. Make sure the battery terminals are clean and tight.
3. Check the power cable connections: remote control switches, fuses, motors, etc.
4. Re-connect the battery connector.
5. Check the signal lamps and the switches:
Check the brush motor switch and its’ signal lamp.
Check the solenoid valve switch and its’signal lamp.
Check the vacuum motor switch and its’ signal lamp.
6. Check the operation of the hourmeter.
Check the functionality of the chopper control: forwards, backwards, acceleration and braking.
1. If the LED alarm is blinking, consult the descriptions on page 33.
2. If necessary, adjust the chopper card (part number 67900041) as follows:
a) Using an ohm meter: Insert the pins of the tester between points 6 & 7 (cable 21) of the chopper connec-
tor. When the forward and backward microswithes are released, the resistance indicated for each should be
similar. The difference should be no more than 10 ohms and the value between 50 and 80 ohms. Verify that
the end scale values of the potentiometer are similar. If you have different values, center the potentiometer.
First loosen the nut that secures the pinion on the shaft, then rotate the potentiometer’s shaft on the pinion.
b) Rotate the motor trimmer counterclockwise up to the limit of its stroke.
c) Rotate the trimmer for braking clockwise to the limit stop. Check that the machine will stop within one
meter (about three foot) after the release of the drive control, when running at the maximum speed.
d) Using a voltmeter, connect the pins onto the motor terminals. Then adjust the trimmer for acceleration in
order to pass from 0 V to about 36 V in about 3-4 seconds, while moving the acceleration lever to the maxi-
mum. Note: Turning trimmer clockwise decreases the acceleration.
ADJUSTMENTS AND INSPECTIONS
26B AND 32B
Location
Drawing 12 - Page 24
Chopper Card - Page 32
Drawing 12-Item 08-Page 24
Drawing 12-Item 64-Page24
Drawing 12-Item 09-Page24
Wiring Diagram-Item 21-Pg.28
Wiring Diagram-Item 26-Pg.28
Wiring Diagram-Item 23-Pg.28
34
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