Unilift 538, Руководство оператора

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EMERGENCY PROCEDURES
In the event the unit is damaged while a man is in the air, or an emergency arises after he has gone aloft, immediately rotate the
bucket away from any dangerous obstruction, into a clear line of descent when the booms are lowered.
The machine should
be operated through the shortest cycle possible to get the bucket on the ground, then operated from the lower control station
to finish storing the boom. Possible conditions and suggested procedures:
PLATFORM CONTROL STATION SWITCH FAILURE
Should any movement not stop when a control switch is released, immediately release the ENABLE-OFF-DOWN OVERRIDE
switch. Hold the control switch in the opposite position and activate the ENABLE switch to test for proper function.
The DOWN OVERRIDE switch at the Platform Control Station allows the operator to use the RETRACT and LOWER functions
in the event of an electrical system malfunction.
LOWER CONTROL STATION SWITCH FAILURE
Should any movement not stop when the control switch is released, immediately turn the key switch to OFF, or push the red
EMERGENCY STOP pushbutton. Hold the control switch in the opposite position and turn the power ON to test for desired
function. The red EMERGENCY STOP pushbutton must be twisted clockwise to reset and resume normal operation.
HYDRAULIC LINE FAILURE
If partial failure is experienced and holding valves do not lock, use the controls in short intervals to store the booms. Should a
complete line failure occur, the holding valve will lock. The failed line must be repaired to release the holding valve.
POWER FAILURE
Standby power may be obtained by using booster cables connected to an automotive power system in the event of a battery system
failure (See Figure 2-1). If the defect occurs beyond the batteries, requiring manual operation, the following procedure can be
used:
1. The boom can be lowered by releasing the cylinder fluid through the Emergency Lowering Valve located at the base of the
hydraulic pump (See Figure 1-6).
2. The boom can be rotated manually as follows: Remove the rotation drive motor belt, then rotate drive pulley, item 18 in
Figure 8-4, until the boom is above the stored position.
3. The telescoping boom can be retracted by removing the pilot-operated check valve (located at the base of the telescoping
cylinder) and manually pushing the upper section fully in.
BUCKET OPERATOR DISABLED
Hold the station override switch in the LOWER CONTROL position. Using the controls at the Lower Control Station, rotate
the boom clear of obstructions, retract the upper boom and lower to the ground.
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