Time VERSALIFT VST-7500-I, Руководство оператора

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4-5 29084-05 03/17 VERSALIFT VST-7500-I
OPERA
TION
CONTROL SELECTOR AND 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 while an operator is working
aloft.
Note: The operation of an outrigger interlocking
device(s) does not assure aerial device stability. It
serves only to remind the operator that the outriggers
have not been deployed.
The controls for operating the outrigger/boom interlock
include a detented control selector and a control valve.
These controls are usually mounted in the ground
control panel similar to the arrangement shown in
Figure 4.2. ANSI A92.2 standards require that the
outrigger control valve be located where the operator
can watch each outrigger raise and lower as the control
valve lever is activated.
Lowering the Outriggers With an Outrigger/Boom
Interlock System:
To lower the outriggers select
“ground controls” with the control selector. Then
operate the outriggers as described previously. Select
“lift controls” with the control selector in order to begin
operating the booms.
Retracting the Outriggers With an Outrigger/Boom
Interlock System:
The booms must be stowed before
the interlock system will allow the outriggers to be
retracted. Stow the booms as described in this
section, “Storing the Aerial Lift”. Select “ground
controls” with the detented control selector. Then
raise the outriggers as described previously.
Ground Control Panel With an Outrigger/Boom
Interlock System
Figure 4.2
HYDRAULIC TOOL OPERATION AT THE GROUND
(Optional)
- Select ground controls at the lift/ground
control selector then connect the hydraulic tool hoses
to the tool power outlets (quick-disconnect couplings).
Activate the tool-power valve by pulling the tool power
valve knob “out”. The other aerial lift controls will not
respond while the hydraulic tools are being operated.
To disconnect the hydraulic tools, the tool-power valve
must be turned “off” so that the pressure in the system
is relieved. This is done by pushing the tool-power
valve knob “in”. Then the tool hoses can be
disconnected safely and easily from the tool power
outlets (quick-disconnect couplings). The tool-power
controls are shown in Figure 4.3.
WARNING
: FAILURE TO RELIEVE
PRESSURE TO THE TOOL PORTS BEFORE
CONNECTING OR DISCONNECTING THE
HYDRAULIC TOOL HOSES MAY RESULT IN A
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.