Minuteman M2400 Electric Burnisher W_ Dust Control Option - Manual (Page 10)

Parts and Instruction Manual
Page 6
Model 2400 Burnisher Operating Instructions
4. After the machine has started the pad pressure gauge, located at the backside near the rear of the base, should
be reading at the top of the white zone, or telling the operator the pad is off the floor. Now, to increase the pad
pressure keep the burnisher running with one hand and pushing the machine in a back and forth motion. With
the other hand turn the center adjustment knob, in the center of the base, to the increase clockwise position
until the gauge gets to the 15 amp red line. After the meter needle reads between the lower edge of the red
zone, or 15 amps, you have reached the proper polishing pressure. If the burnisher runs over a high spot, the
gauge needle will go into the top of the red zone, but should fall back into the safety-working zone as you go
along. As the pad is being used more pad pressure will be required just by running the machine back and forth
and screwing the adjustment knob to the increase position until the needle reaches 15 amps, or the bottom of
the red safety working zone. If the operator works too long in the red zone the machine will trip the thermo-reset
breaker located at the rear base of the machine. To prevent it from happening again adjust the pad pressure
screw knob counter clockwise to decrease pad pressure.
5. The machine should always be started with the pad
pressure fully decreased when using a new pad, and
then adjusted to the correct pad pressure.
6. Burnish with the machine in a straight line. The pace
of the machine should be determined by the condition
of the floor. Normally the machine can be operated at
a slow to medium walking pace. Overlap with the pad
driver approximately 2” to 3” when making a pass.
For the ease of use, start nearest the wall outlet and
work away from this point. CAUTION: Do not let the
machine sit in one spot for more than 5 to 10 seconds.
Due to the high RPM’s of this machine and the heat it
develops, sitting in one spot longer than this may
damage the floor finish and possible the floor itself.
7. The machine employs an adjustable spring loaded
center caster directly in the center of the pad driver.
This caster is preset at the factory to have the machine
operate at 14.0 to 14.5 amps. If the machine circuit
breaker trips, or the wall circuit breaker trips, adjust
the center wheel caster to “decrease” the pad pressure
on the floor. If the machine is not properly burnishing
the floor with full pad contact, adjust the caster to
“increase” the pad pressure on the floor.
8. This machine employs a motor carbon brush wear
indicator light located on the rear base of the machine.
This light will illuminate when the brushes are worn to
the point where there is approximately 250 hours
remaining. The carbon brushes should be replaced
shortly after this light indicates excessive wear.
Pad Pressure Gauge. Needle will “peg” then drop to its normal
pressure. Adjust pad pressure knob so pad pressure gauge reads
at the 15 amp red line. Be sure to keep unit moving to prevent
damage to the floor.
Pad Pressure Gauge
Circuit Breaker
Carbon Brush Wear Indicator Light