Skyjack SJ 9250 - Test Emergency Lowering

Page 32 Mid Size & Full Size RTs
Engine Powered
Function Tests Section 2 - Familiarization
It is the responsibility of the operator to read, completely understand and follow all instructions and warnings
contained in this operating manual and on the aerial platform.
• Test Emergency Lowering
(Models 71xx & 88xx)
WARNING
Be aware of overhead obstructions
or other possible hazards around the
aerial platform when lifting.
1. Raise the platform to an approximate
height of 4 meters.
2. Locate holding valve manual override knob
at the base of each lift cylinder. Depress
and turn counterclockwise. If necessary,
use emergency lowering access rod that
is located either at the base, on top of
scissor guards, or on top of fuel cabinet.
3. On hydraulic/electrical compartment, pull
out and hold emergency lowering valve to
fully lower the platform.
Result: Platform should fully lower.
4. To restore normal operation, depress and
turn holding valve manual override knobs
clockwise.
• Test Emergency Lowering (Model 9250)
WARNING
Be aware of overhead obstructions
or other possible hazards around the
aerial platform when lifting.
1. Raise the platform to an approximate
height of 4 meters.
2. In hydraulic/electrical compartment,
depress and hold emergency lowering
pushbutton to activate the auxiliary
lowering valves. Pull out and hold the
emergency lowering valve to fully lower
platform.
Result: Platform should fully lower.
2.4-3 Test Main Power Disconnect Switch
1. On hydraulic/electrical compartment, turn
main power disconnect switch to “ ” off
position.
Result: Engine should shut down and aerial
platform functions should not operate.
Emergency Lowering
Valve
Platform Lower/Neutral/
Raise Switch
Enable Switch
Base Control Console
Emergency Stop
Button
Auxiliary Start
Switch
Emergency Stop
Button
Platform Lower/Neutral/
Raise Switch
Enable Switch
Model 71XX Models 88XX & 9250
FAMILIARIZATIONFAMILIARIZATION