Versalift VO-452-MHI, Руководство оператора

Страница: 30 / 50

4-2 39049-01 01/17 VERSALIFT VO-452/455/460-MHI
OPERA
TION
locking the drive shaft behind the transmission.
If the weight is reduced from one or both of the
rear wheels, by the position of the lift, the truck
differential can allow the truck to roll. Refer to
Figure 4.1 diagram for proper way of chocking
the wheels.
Wheel Chocking Diagram
Figure 4.1
DANGER:
NEVER OPERATE THE
LIFT WITHOUT SETTING THE PARKING BRAKE
AND CHOCKING THE WHEELS. A ROLLING
TRUCK MAY CAUSE AN ACCIDENT RESULTING
IN DEATH OR SERIOUS INJURY.
3. Set up adequate cones or barricades to mark
the boundaries of the work site and alert
pedestrians and motorists. Never work outside
the boundaries.
OUTRIGGERS(If equipped) - To operate the
outriggers see “Outrigger Controls” in this section.
After the truck has been properly parked on level
ground, and the outriggers have a clear path to the
ground, lower all the outriggers until there is firm
contact with the ground. When the ground is too soft
for the outriggers to be effective place outrigger pads
on the ground to increase the bearing area.
If the truck is parked on sloping ground so that one
side of the truck is lower than the other side, extend
the low-side outrigger first so that firm contact is made
with the ground. This will avoid tilting the truck even
more to the low-side when the high-side outrigger is
lowered.
If one or both outriggers (of a pair) are not fully
extended, the outrigger spread is reduced. This
reduces the stability of the aerial lift. For example,
when an outrigger rests on a curb the outrigger spread
is reduced.
The stability of the truck depends on the unit’s gross
weight, firmness and slope of the ground, weight in
the platform or load on the lifting eye, tire pressure,
and outrigger spread. These factors are widely variable
and caution must be used when determining the
stability of the unit. If, under any condition, there is
doubt about vehicle stability, do not operate the lift.
DANGER:
NEVER OPERATE WITHOUT
EXTENDING THE OUTRIGGERS (IF EQUIPPED).
WITHOUT PROPER OUTRIGGER EXTENSION THE
UNIT MAY TIP RESULTING IN DEATH OR
SERIOUS INJURY.
AERIAL LIFT OPERATIONS
This section emphasizes overall operating practices
for aerial lift operation. This information appears in an
order of probable use while operating from the ground,
then at the platform and close to energized conductors.
Start Up Procedures When Operating From the
Ground:
It is assumed the truck has been positioned
for operation as described in this section.
In extremely cold weather allow the aerial lift to idle a
few minutes before engaging a load. Further
consideration of cold weather operation is addressed
in Service Procedures Section of Service Manual,
“Hydraulic Oil Recommendations”.
After the outriggers have been lowered to increase
stability, disengage the upper boom tie-down strap.
Select “turret” with the control selector lever at the
lower controls. Refer to diagram of the lower controls
in this section. Note: If an aerial device has been idle
for an extended length of time it must be operated
from the lower controls through its full range of motion
several times before an operator enters the platform.
This procedure will allow the operator to confirm the