Skyjack SJ12 User Manual

51
SJ12, SJ16 213721AAA
Use the emergency-lowering function Section 6 – Additional Procedures
Section 6 – Additional Procedures
6.1 Use the emergency-
lowering function
With the emergency-lowering system, you can lower
the platform if there is a failure of the primary power.
WARNING
Crush hazard. Keep clear of the lift mechanism
when you use the emergency-lowering function. If
you do not obey, there is a risk of death or serious
injury.
1. Remove obstructions before you lower the
platform.
2. If necessary, retract the extension platform or
move the MEWP to clear an obstruction.
3. Push the emergency-stop button on the base
control console.
4. Find the emergency-lowering valve
1
at the
rear of the base.
WARNING
Look for overhead obstructions or other possible
hazards around the MEWP when you raise the
platform. Do not lower the platform unless the area
below is clear of personnel and obstructions. If
you do not obey, there is a risk of death or serious
injury.
5. Pull out and hold the emergency-lowering valve
to fully lower the platform.
6.2 Release the brakes
manually
WARNING
Do not manually disengage the brakes if the
MEWP is on a slope. If you do not obey, there is a
risk of death or serious injury.
1. Make sure that the MEWP is on rm, level
ground. Use wheel chocks or blocks at the
front and rear of the wheels to prevent MEWP
movement.
2. Turn the main power disconnect switch to the
off position.
3. Push the plunger
1
of the brake auto-reset
valve on the drive manifold at the rear side of the
base.
4. Continuously push and release the knob
2
of
the hand pump until you feel rm resistance. The
brake is released.
NOTE
If the MEWP does not have a pressure gauge,
refer to the service manual for the installation
procedure.
1
2
1

Skyjack SJ12 Specifications

General

Gradeability	25%
Drive Motor	24V DC
Machine Width	32 in (0.81 m)
Stowed Height	6.5 ft
Overall Width	32 in (0.81 m)
Stowed Height (Rails Folded)	6.5 ft
Drive Speed (Elevated)	0.5 mph (0.8 km/h)
Power Source	Electric