Emergency Lowering System - Skyjack SJ-7027 Operating, Maintenance And Parts Manual

Emergency Lowering System

1
Figure 2-12. Emergency Lowering System
Emergency Lowering System - This system allows
platform lowering in the event of an emergency or an
electrical system failure.
1. Holding Valve Manual Override Knob - Located
on the holding valve at the bottom of each lift cylinder,
these red knurled knobs when depressed and turned
counter-clockwise allow hydraulic oil to bypass each
holding valve. The red knurled knobs on each
holding valve MUST be depressed and turned
clockwise to restore normal operation. An access
rod for reaching the elevated manual override
knob shall be provided for CE units only.
SECTION 2, Page 10
2. Emergency Lowering Valve - Pull out and hold
the Emergency Lowering Valve plunger, and the
platform will gradually lower. Located at the rear of the
hydraulic/electric side cabinet, this pull-type valve
when used in conjunction with the holding valve
manual overrides, allows platform lowering in the
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event of an emergency or electrical system failure.
Activate all holding valve manual override knobs, then
pull and hold the plunger out to lower platform.
Release to stop.
Keep clear of scissors mechanism when using
emergency lowering valve!
lowering is completed, the red knurled knobs on each
holding valve
clockwise to restore normal operation.
June 2001
Warning
Crushing Hazard
After emergency
MUST be depressed and turned
SJ-600 Series Engine Powered