4500360-1/1101
Figure 1-4A
Platform Control Station
Operation - Page 1 - 4A
CONTROLS (S/N: 2235 & Above)
The movement of the lift may be controlled from the Platform Control Station (bucket) or the Lower Control Station (base).
Platform Control Station
The Platform Control Station is located at the upper end of the telescoping boom (see Figure 1-4A) and contains five toggle
switches and a power indicator lamp. The Platform Control Station is used to control movement of the machine from the
bucket.
The Platform Control Station has five control toggle switches:
an EMERGENCY STOP switch, a DOWN OVERRIDE-OFF-
ENABLE switch, and three control switches. The
EMERGENCY STOP switch applies or removes power to the
Platform Control Station, and must be in the ENABLE
position to operate the machine from the bucket. The DOWN
OVERRIDE-OFF-ENABLE switch applies or removes power
to the control switches. Activating a switch in a certain
direction results in a corresponding movement of the bucket.
The switch actuators are spring loaded to the neutral position.
To operate the machine from the Platform Control Station:
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Set the EMERGENCY STOP switch to the “ENABLE”
position. The power indicator lamp will light.
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Hold the DOWN OVERRIDE-OFF-ENABLE switch to
the “ENABLE” position.
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Activate a control switch in the chosen direction to move
the bucket/boom in the corresponding direction.
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When the control switch is released, the actuator returns
to the neutral position, and movement stops.
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Movement will also stop when the DOWN OVERRIDE-
OFF-ENABLE switch is released.
The DOWN OVERRIDE position serves as a means of lowering and retracting the boom in an emergency situation due to
an electrical system malfunction or interlock concern. Activating the switch to the DOWN OVERRIDE position allows
operation of the LOWER and RETRACT functions only.
Lower Control Station
The lift may also be operated from the base (see Figure 1-5A). The Lower Control Station contains four toggle switches,
a key switch, and an EMERGENCY STOP button.
The EMERGENCY STOP button must be pulled out and the PLATFORM CONTROL-LOWER CONTROL switch must
be held in the LOWER CONTROL position before the control switches at the base will operate. This prevents accidental
activation of the Lower Control Station.
IMPORTANT: The Lower Control Station is intended for crane operation and stowing of the booms. When a worker
is present in the bucket, the base controls may be used for an emergency only!
The toggle switches control movement of the booms and rotation system. Activating a switch in a certain direction results
in a corresponding movement of the bucket. The switch actuators are spring loaded to the neutral position.
The rotation system is equipped with two limit switches that prevent more then 350
E
of rotation. When the boom is rotated,
and a limit switch is reached, rotation will stop. Simply reverse the control and rotate in the opposite direction to reposition
the bucket.
Summary of Contents for 538
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