Versalift VST-8000-I, Руководство оператора

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5-1 39026-03 02/17 VERSALIFT VST-8000/8500/9000/9500-I
EMERGENCY
OPERA
TION
Emergency operation may be required if an operator
is injured or the hydraulic system malfunctions.
This section describes the controls and features
designed to accommodate emergency operation
and to describe some procedures for responding
to emergency situations. In an emergency, the fi rst
priority is always the safety of the personnel. Before
attempts are made to rescue personnel, make sure
the unit has not become electrically energized.
Identifying the problem and initiating emergency
procedures promptly helps minimize or possibly
prevents injuries. It is important to follow standard
work practices and safety regulations.
DANGER:
BEFORE ATTEMPTING TO
RESCUE PERSONNEL ON THE AERIAL LIFT,
ALWAYS MAKE SURE THAT THE TRUCK
AND THE AERIAL LIFT HAVE NOT BECOME
ELECTRICALLY ENERGIZED. CONTACT MADE
BY RESCUERS FROM THE GROUND WITH AN
ENERGIZED UNIT WILL CAUSE DEATH OR
SERIOUS INJURY.
CONTROL SELECTOR (Platform Override) - If a
situation requires overriding the upper controls (i.e.
an injured operator in the platform), use the control
selector to select the lower controls for operation
of the lift. This will render the upper controls
inoperable and the lower controls can be used to
lower the platform/operator to the ground. Refer to
lower control paragraph in Section 4, Operation of
this manual.
BLEEDER PORTS - If the hydraulic system becomes
inoperable with an operator aloft, bleeder ports on the
cylinders (Figure 5.2 and 5.3) can be used to lower
the booms and return the operator to the ground.
Qualifi ed personnel at the site are responsible for
selecting the path of boom descent. The unit may
be equipped with two diff erent type of bleeder ports.
Refer to Figure 5.1 for identifi cation and proper
procedures for loosening the bleeder ports. Be
prepared for a fl ow of hot oil escaping around the
bleeder port and step away from the boom path
of descent. The speed at which the lower boom
drifts down depends on the rate of oil loss. If the
bleeder ports are used, see “Responsibilities after
Emergency Operation” at the end of the section.
EMERGENCY OPERATION
Bleeder Ports
Figure 5.1
Set Screw Type Bleeder
- Turn the set screw slowly
using an Allen wrench to release load. Do not turn
the body. Oil is released from the hole on the side
of hex body.
Plug Type Bleeder
- Turn the entire plug slowly
using a wrench to release load. Do not remove the
plug. Oil is released from the notch in the threads.
Torque to 10-15 ft-lbs. after use.
Extension Cylinder Bleeder Ports
(Shown on bottom, port also located on top)
Figure 5.2
Upper/Lower Boom Cylinder Bleeder Ports
Figure 5.3