MAINTENANCE
73
810D MM310 (3--95)
THERMO SENTRY
t
The Thermo Sentry
t
senses the temperature of
the air pulled up from the hopper. If there is a fire
in the hopper, the Thermo Sentry
t
stops the
vacuum fan and cuts off the air flow. The Thermo
Sentry
t
is located on the vacuum fan housing.
Reset the Thermo Sentry
t
by pushing in its reset
button.
BRUSHES
MAIN BRUSH
The main brush is cylindrical and spans the width
of the machine, sweeping debris into the hopper.
Check the brush daily for wear or damage.
Remove any string or wire tangled on the main
brush, main brush drive hub, or main brush idler
hub.
Check the main brush pattern daily. The pattern
should be 50 to 65 mm (2 to 2.5 in) wide. Adjust
the main brush pattern by turning the main brush
pressure knob located next to the operator seat.
Rotate the main brush end-for-end every
50 hours of operation for maximum brush life and
best sweeping performance.
Replace the main brush when the remaining
bristles measure 30 mm (1.25 in) in length.
TO REPLACE MAIN BRUSH
1. Stop the engine and set the machine parking
brake.
FOR SAFETY: Before leaving or servicing
machine; stop on level surface, set parking
brake, turn off machine and remove key.
2. Raise the main brush.
3. Open the right side main brush access door.
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