22
American-Lincoln
SC7750 IC
HOPPER DUMP DOOR LEVER (See Figure 27)
The hopper door lever is located on the operator’s com-
partment and is used to close and open the hopper dump
door. The lever is a two position hydraulic valve that is
spring loaded to the center position which “HOLDS” the
hopper door in position.
To open the hopper dump door for sweeping or dumping,
push the lever to the “OPEN” direction.
To close the hopper dump door for dumping or transport-
ing, push the lever fully back in the “CLOSE” direction,
and hold for 3 seconds or until you hear the door close.
NOTE
The dump door will automatically open when the main
broom is engaged and the hopper is lowered.
The main broom, side broom, dust control and filter shaker
turn off automatically when the hopper is dumping and/or
the dump door is in a closed position.
A switch triggered by the hopper and dump door’s position
control the sweeping functions, main broom, side broom,
dust control, and filter shaker. The hopper must be down
and the dump door open to allow these to function.
HOPPER LIFT LEVER (See Figure 28)
The hopper lift lever is located on the operator’s compart-
ment console. The lever is a two position hydraulic valve
that controls the operation of the hopper lift system. The
lever is spring loaded to the center position which stops
hopper movement and “HOLDS” the hopper at the present
position.
To raise the hopper for dumping, move the lever to the
“RAISE” position and hold until the hopper reaches the
desired height, then release.
WARNING
The hopper may drop unexpectedly and cause injury,
always engage the safety arm before working under the
hopper.
To lower the hopper after dumping, move the lever to the
“LOWER” position until the hopper is fully lowered and
seated in the machine, then release.
HOPPER FILTER COMPARTMENT COVER
(See Figure 29)
The hopper filter compartment cover is located on the top
of the hopper and opens forward for access to the filter
compartment for service and inspection of the dust
control filter and optional hopper temp sensor.
Inspect the cover gaskets daily. Replace any cover
gaskets that show signs of deterioration. Failure to
maintain the gaskets in serviceable condition will degrade
dust control at the floor and will result in less than optimal
sweeping performance.
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C1717A
FIGURE 27
C1725A -IC
FIGURE 29
C1717B
FIGURE 28
OPERATION OF CONTROLS AND GAUGES
