Hillyard 108538, Service Manual

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4.6.3 Relative electrical Components
Brush Motor
With constant 24 V DC power supply (battery charged) the motor with no load (BR1 & BR2) absorbs 2.6
Amps
±
0.1. With a constant supply of 21 V DC (low battery) the absorption is 2.4 Amps
±
0.1.
Actuator
The brush deck lifting actuator, by means of the lever and the tie rod, lowers and pushes the brushes to the
ground, according to the preset pressure.
Pressure Control Microswitch
The pressure control microswitch is mounted on a bracket. It intervenes if the motors have a too low absorption
to prevent the scrubdeck actuator from continuing to push. If the pin falls below its limit, the micro opens and
stops the actuator.
4.7 Adjustments
4.7.1 Brush Deck
The scrub deck is tilted in the transverse direction and should be adjusted longitudinally inclined to the machine
so that the brushes have a distance of about 3-5 mm from the floor, larger on the front than on the rear side.
This allows the brush to evenly lean to the ground and perform its function properly.
Requirements: Mounted brush, switched off machine.
Procedure:
ˆ
Hook the brushes to the scrub deck.
ˆ
Act on the hexagonal fixing screw of the right upper arm.
ˆ
Place on the front of the brush, between the brush and the
floor a spacer of about 3-5mm thick.
ˆ
Lower the brush deck to the ground so that the brush lies
uniformly and parallel to the floor.
ˆ
Tighten the hexagonal fixing screw of the right upper arm.
ˆ
When the operation is performed check that the adjusting
bubble level on the scrub deck is centered.
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