10 Emergency Lowering System; 11 Lowering Warning System; 12 Maintenance Support - Skyjack SJ 3219 Operating Manual

Section 2 - Operation

2.5-10 Emergency Lowering System

This emergency lowering system allows platform
lowering in the event of an emergency or an electrical
system failure. Refer to Section 2.15
lowering procedure. The system contains the following
controls:
Figure 2-8. Emergency Lowering System
1. Holding Valve Manual Override Knob - Located
on the holding valve at the bottom of each lift
cylinder.
2. Emergency Lowering Valve - Located at the rear
of the hydraulic/electric tray.
3. Access Rod (3226, 4626 & 4632) - Located at the
left side of the base.

2.5-11 Lowering Warning System

A lowering warning system automatically stops the
lowering function before reaching the fully retracted
position and sounds an alarm.
SJIII Compacts & Conventionals

2.5-12 Maintenance Support

for the emergency
1
1.
2
3
December 2007
Component Identification
1
Figure 2-9. Maintenance Support
Maintenance Support - The maintenance support
is a safety mechanism designed to support the
scissor assembly. When properly positioned it
can support the scissor assembly and empty
platform. The maintenance support must be used
when inspection and/or maintenance is to be
performed within the lifting mechanism. Refer to
Section 2.16 for procedure on how use and store
the maintenance support.
wARNiNG
The maintenance support must be used
when inspection and/or maintenance or
repairs are to be performed within the
lifting mechanism. Failure to use this
safety mechanism could result in death
or serious injury.
wARNiNG
Do not reach through the scissor assembly
when the platform is raised without the
maintenance support properly positioned.
Failure to avoid this hazard could result
in death or serious injury.
TM
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