Emergency Lowering Procedures - Skyjack SJ8831 RT Operating Manual

Section 2 - Familiarization

2.6 Emergency Lowering Procedures

This section guides the operator on how to use the
emergency lowering system. This system allows
platform lowering in the event of an emergency or
malfunction.
Models 88xx & 9241
WARNING
Keep clear of scissors mechanism when
using emergency lowering valve.
1. Remove any obstructions to a descending
platform.
2. Extension platform(s) may need to be retracted
or aerial platform may need to be moved to clear
obstructions. Refer to
towing procedures.
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Figure 2-10. Emergency Lowering System
3. Locate holding valve override knobs (item 1)
at base of each lift cylinder. Depress and turn
counterclockwise. If necessary, use emergency
lowering access rod (item 3) that is located on
aerial platform base or on top of fuel cabinet.
4. On the hydraulic compartment, pull out and
hold emergency lowering valve (item 2) to lower
platform.
5. To restore normal operation, depress and turn
holding valve override knobs clockwise.
Rough Terrain Scissors
It is the responsibility of the operator to read, completely understand and follow all instructions and warnings
Section 2.5 for winching and
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December 2007
contained in this operating manual and on the aerial platform.
Model 9250
WARNING
Keep clear of scissors mechanism when
using emergency lowering valve.
1. Remove any obstructions to a descending
platform.
WARNING
Ensure platform and extensions including
railing are clear of obstructions before
operating emergency powered extension
platform retraction switch.
2. Extension platform(s) may need to be retracted
or aerial platform may need to be moved to clear
the obstructions. Refer to
and towing procedures. Model 9250 are equipped
with emergency powered extension platform
retraction switch (located in the hydraulic/electrical
compartment) to retract the powered extension
platform from the base (item 1).
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Figure 2-11. Emergency Lowering System
3. In hydraulic compartment, depress and hold
emergency lowering pushbutton (item 2) to
activate the auxiliary lowering valves. Pull out
and hold the emergency lowering valve (item 3)
to lower platform. No further actions are required
to restore normal operation.
Procedures
Section 2.5 winching
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