Cab Control Operation; Ground Control Operation - Versalift VO-452-MHI Operator's Manual

DANGER:
BRIDGES THE PLATFORM AND GROUND
RENDERS THE INSULATION USELESS AND MAY
RESULT IN DEATH OR SERIOUS INJURY IN THE
EVENT OF AN ELECTRIC SHOCK.
DANGER:
NEVER ALLOW ANYONE ON THE GROUND TO
TOUCH THE UNIT WHEN THE LIFT IS BEING USED
TO WORK ON OR NEAR ELECTRICAL LINES. IF
THE UNIT BECOMES ENERGIZED DEATH OR
SERIOUS INJURY MAY RESULT FROM CONTACT
WITH THE UNIT.
DANGER:
ELECTRICALLY CHARGED WIRE AND A METAL
PART OF THE BOOM MAY CAUSE THE WIRE TO
BURN THROUGH, LETTING THE TWO LOOSE
WIRE ENDS FALL TOWARD THE GROUND. THIS
MAY CAUSE DEATH OR SERIOUS INJURY TO
INDIVIDUALS ON THE GROUND.
As previously stated, it is the responsibility of the
operator and the ground crew to know and understand
the capabilities of the aerial lift and hazards associated
with operation near electric lines or components. In
addition they must apply this knowledge to situations
that arise on the job for safe and efficient operation.

CAB CONTROL OPERATION

The cab controls include the master control, the engine
start/stop control, and the PTO (Power Take-Off) shifter.
MASTER CONTROL (Standard) - The master control
consists of a toggle switch and a light mounted on
the dashboard of the truck. The toggle switch is used
to energize or de-energize the start/stop system and
the throttle control options. When the light is lit the
toggle switch is energizing these systems.
ENGINE START/STOP (Standard) - The engine start/
stop is a push button control and is usually mounted
on the dashboard of the truck. The system is activated
by pushing and holding the button momentarily to
"start" the engine. If the engine does not crank then
the start/stop button may require a second push to
get the latching relay into the "start" position so the
truck engine will turn over. Then to deactivate the
engine press the start/stop button again. This feature
is especially convenient when the lift is being operated
from the lower (turret) controls.
VERSALIFT VO-452/455/460-MHI
EQUIPMENT WHICH
GIVE WARNING AND
CONTACT BETWEEN AN
DANGER:
THE TRUCK TRANSMISSION
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 OR
ANYONE IN THE PATH OF THE TRUCK.
(PTO) POWER TAKE-OFF (If So Equipped.) - The
power take-off is a gearbox used to transmit power
from the truck transmission to the hydraulic pump,
which provides hydraulic oil for the aerial lift functions.
The power take-off control consists of a toggle switch
and a red light mounted in the truck dashboard. When
the red (PTO) indicator is lighted the PTO is activated.
The operator must never drive the truck with the PTO
engaged.
CAUTION:
ENGAGED MAY DAMAGE THE TRANSMISSION,
PUMP, AND/OR THE PTO.
To engage the power take-off properly refer to the
operating instructions located in the PTO
manufacturer's owner manual. If the PTO control is
not responding properly or if the manufacturer's
operating decals are not posted in the cab (near the
control) notify the appropriate personnel for correction.

GROUND CONTROL OPERATION

The ground controls may include one or more of the
following controls: outrigger, outrigger/boom interlock,
and tool power. Ground controls are usually mounted
on panels in the rear bumper of the truck or below the
deck of the unit. Descriptions and operating
procedures for these controls are given in the following
text.
OUTRIGGER OPERATION - The outriggers should
always be extended to provide stability for the aerial
lift. The outrigger controls consist of a control selector
and a control valve as shown in Figure 4.2.
OUTRIGGER/BOOM INTERLOCK - The outrigger/
boom interlock is a feature designed to prevent the lift
from being operated until the outriggers are properly
extended. The interlock also prevents the outriggers
from being retracted before the lift is properly stored.
This option is particularly useful in keeping
unauthorized personnel from operating the outriggers
4-4
DRIVING WITH THE PTO
39049-01 01/17