Versalift VO-452-MHI Operator's Manual page 36

knob labeled "PUSH FOR EMGY. STOP"; then the
upper controls are inoperable and pressure at the tool
ports is relieved. When the emergency stop knob is
pulled up, the upper controls and tool power are
functional.
ENGINE START/STOP CONTROL (Standard) - The
engine start/stop control has been designed so that
the lift cannot be operated unless the truck ignition is
in the "RUN" position and the master control is "ON".
This feature makes it difficult for unauthorized
individuals to operate the lift when the truck is locked.
The engine start/stop system is operated by an air
cylinder at the upper controls.
DANGER:
MUST BE IN NEUTRAL BEFORE USING THE
ENGINE START/STOP. STARTING THE ENGINE
WITH THE TRUCK IN GEAR WILL CAUSE
MOVEMENT WHICH MAY CAUSE DEATH OR
SERIOUS INJURY TO THE OPERATOR IN THE LIFT
OR ANYONE IN THE PATH OF THE TRUCK.
To start the truck engine from the platform, push
the air cylinder plunger knob down and hold the knob
until the engine starts. If the truck starter does not
engage, release the plunger knob and allow the
plunger to rise to the neutral position. A second push
on the plunger may be required to get the latching
VERSALIFT VO-452/455/460-MHI
Single Stick Upper Controls
THE TRUCK TRANSMISSION
Figure 4.6
relay into position so the engine will start.
To stop the truck engine from the platform, push
the air cylinder plunger knob down to get the latching
relay into the "stop" position.
BACKUP PUMP CONTROL (Option) - The backup
pump system is operated by an air cylinder plunger
knob. The backup pump system should not be
operated longer than 30 seconds continuously.
Continuous use will drain the battery and damage (over
heat) the backup pump motor.
To activate this system from the upper controls,
push the air cylinder knob down and hold it while
operating the lift controls.
To turn off the backup pump from the upper
controls, release the knob and allow it to return to
the neutral position.
PLATFORM ROTATION - This control rotates the
platform clock-wise and counter-clockwise through a
total travel of 90°.
HYDRAULIC PLATFORM TILT - This control can be
used to level the platform and to dump the platform for
clean out or rescue.
JIB TILT - This control tilts the jib pole a total of 125°
relative to the upper-boom.
4-8 39049-01 01/17