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Troubleshooting Guide - Pullman Holt DS-20 Operation & Care Instructions

Dual speed floor machine

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TO ASSEMBLE
Attach handle assembly to chassis assembly. Then attach scrub
brush or drive brush and appropriate pad and the machine is ready
to operate.
TO ADJUST HANDLE
The handle adjustment is controlled by a "star knob" located at the
rear of the machine near the bottom of the handle pipe. To release,
turn the knob counter-clockwise or by applying foot pressure to the
lower portion of the knob. When a convenient handle location for
machine operation has been found, lock the handle in place by turn-
ing the star knob clockwise to tighten. When transporting the
machine or attaching brush/pad be sure the handle is LOCKED in the
upright position. NEVER TURN ON THE MACHINE WITH HANDLE IN
THE UPRIGHT LOCK POSITION.
TO OPERATE SAFETY LATCH
The operator must manually rotate the latch with the left thumb
before machine will run. When the trigger is released, the safety
latch snaps back into lock position. This will prevent the machine
from accidental start-up.
TO ATTACH BRUSH
Always attach brush by hand. Never by placing machine over an
unattached brush and starting machine to lock brush. This will
cause gear box damage not covered by warranty.
With cable unplugged, LOCK handle in upright position and tilt
machine back on the handle until the underside of the machine is
fully exposed. Select the desired brush, scrub or drive, and position
Symptom
Motor Won't Run
Polisher Runs Slows
Machine Noisy
Red Neon Lamp Is On
ABOUT THE MACHINE

TROUBLESHOOTING GUIDE

Possible Cause
1. Blown fuse or tripped circuit
breaker at wall panel
2. Defective switch
3. Defective power cord
4. Defective rectifier
1. Low line voltage
2. Pad loaded, heavily soiled
1. Defective motor
2. Defective gear box
3. Wheels vibrating
1. Worn motor brushes
the three slots of the clutch plate over the three lugs of the drive
plate. Turn the brush counter-clockwise as far as it will go. The
brush is now seated in ready-to-use position. TO REMOVE BRUSH,
disengage clutch plate slots from drive plate lugs by turning clock-
wise. DO NOT OPERATE THIS MACHINE WITHOUT SCRUB BRUSH
OR DRIVE BRUSH AND PAD IN PLACE.
TO START
With the power cable plugged into a proper outlet, squeeze the
switch bar beneath the handle grips.
CAUTION
Machine will immediately veer to one side. Be prepared to
control action.
TO OPERATE
This machine is designed to move from side to side. To guide right,
raise the handle slightly. The higher the handle is raised, the faster
the machine will move to the right. Conversely, to guide left, lower
the handle. The more the handle is lowered, the faster the machine
will move to the left. DO NOT LEAVE A PLUGGED IN MACHINE
UNATTENDED.
CARE AND MAINTENANCE
This machine will afford you many years of trouble-free service pro-
vided it is given proper care. Throwing, dropping, bumping across
the thresholds and other misuse may result in a damaged unit and
invalidate the warranty. For best results, use a clean pad and change
frequently as pad loads up. When storing your floor machine, always
remove the pad and brush.
It is not necessary to lubricate this machine. Lubrication has been
applied and permanently sealed at factory.
Corrective Action
1. Replace fuse or reset circuit breaker
2. Replace switch
3. Replace power cord
4. Replace rectifier
1. If voltage under recommended minimum, check size of wiring
from main switch
2. Clean or replace pad
1. Return to service center
2. Return to service center
3. Return to service center
1. Replace brushes

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