Versalift VST-8000-I, Operator'S Manual

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5-3 39026-03 02/17 VERSALIFT VST-8000/8500/9000/9500-I
EMERGENCY
OPERA
TION
the starter, do not crank the engine for more than
30 seconds continuously.
The engine start/stop
control at the upper or lower controls may be used
while actuating the lift function.
At the upper controls,
the engine start/stop control
is operated by an air cylinder. The air cylinder
plunger knob is pushed down and held until the
engine starts. The plunger knob may require a
second push to set the latching relay into the start
position. Another push on the plunger knob will stop
the engine.
At the lower controls,
the engine start/stop system
is operated by momentary toggle switch. This
system is activated by pushing the switch to the
“START/STOP” position. It may require a second
push to set the latching relay in the start position.
To stop the engine push the switch to the “START/
STOP” position once more.
RECOMMENDED EMERGENCY PROCEDURES:
INJURED OR INCAPACITATED OPERATOR - If
the operator is unable to operate the aerial lift,
determine if any damage has occurred to make
the lift inoperable. If the aerial lift is operable and
the situation allows safe operation from the lower
controls, move the platform away from the danger
and into the shortest clear path to get the operator on
the ground. See “Control Selector”, at the beginning
of this section, for specifi c instruc tions on overriding
the upper controls. If the aerial lift is not operable,
use another aerial lift to rescue the operator from
the platform or consider one of the other emergency
procedures in this chapter.
HYDRAULIC LINE FAILURE - Hydraulic line failure
during aerial lift operation presents numerous
hazards. Be aware that hydraulic oil mist caused
by a leak or hydraulic line failure is conductive even
though a non-conductive oil is used.
DANGER
:
AVOID HIGH PRESSURE
HYDRAULIC OIL SPRAY. THIS SPRAY OR MIST
CAN PUNCTURE OR BECOME EMBEDDED
BENEATH THE SKIN OR CONTAMINATE
THE EYES. THESE CONDITIONS REQUIRE
IMMEDIATE MEDICAL ATTENTION.
A hydraulic line leak will create a slippery surface
which is potentially hazardous. When a hydraulic
leak is encountered it must be repaired by the proper
service personnel and the unit should be cleaned
of excess hydraulic oil. If a hydraulic leak is not
repaired the oil in the reservoir will be depleted
and pump damage may occur. Most hydraulic oils
are fl ammable and bodily contact with hot oil is
dangerous. The operator and the ground crew must
be alert for these hazards to avoid injury.
DANGER
:
AV O I D A N Y C O N TA C T
BETWEEN HYDRAULIC OIL AND SOURCES
OF HIGH HEAT OR OPEN FLAMES. DEATH OR
SERIOUS INJURY MAY RESULT FROM A FIRE.
WARNING
:
C O N TA C T W I T H H O T
HYDRAULIC OIL MAY CAUSE SERIOUS BURNS
W H I C H R E Q U I R E I M M E D I AT E M E D I C A L
ATTENTION.
A quick response to hydraulic line failure is
important, if the operator is to be safely removed
from the platform. The examples below describe
some emergency operating procedures for typical
hydraulic line failures.
1. The Versalift aerial lift design uses holding valves
to lock the booms in position in the event of a
hydraulic line failure. If there is a continuous
loss of hydraulic oil from the aerial lift, operate
the hydraulic power source only while attempting
to stow the aerial lift to conserve the hydraulic
oil supply. If operation of the aerial lift is not
possible, use the bleeder ports and manual
rotation.
2. A hydraulic line failure located between the
upper and lower controls may temporarily allow
the continued operation of the aerial lift. The
rate of the hydraulic oil loss can be reduced
by overriding the upper controls and operating
the aerial lift with the lower controls. If the oil
supply is depleted, discontinue operation of the
hydraulic power source to avoid damage to the
hydraulic pump. If the aerial lift is inoperable,
use the bleeder ports and manual rotation as
required.
ENGINE FAILURE - If the prime power source fails,
the optional backup pump system can be used for
emergency operation. If this system is not installed,
use the engine start/stop control to crank the engine.
If this also has not been installed, the bleeder ports
and manual rotation must be used.
HYDRAULIC PUMP FAILURE - If the primary
hydraulic pump fails use the backup pump system,