Poweramp VS SERIES HYDRAULIC - Manual (Page 18)

16 4111-0008 — Sept 2012
INSTALLATION
Purging air from the VS hydraulic system.
1. Begin by supporting the leveler in the stored
position with the storage prop and maintenance
props. Lock out the storage prop with the locking
bolt.
2. Lock-out and tag-out the leveler.
3. Disconnect the lower hoist cylinder mounting pin.
4. Remove one of two screws holding the stored
limit switch. Swivel stored limit switch away from
storage prop.
SEE PAGE 28
5. Open down speed flow control valve (counter
clockwise). Down speed control valve is located
on hoist cylinder
SEE PAGE 28
6. Restore power to the leveler. Confirm the blue
stored indicator light is no longer illuminated.
7. Cycle the hoist cylinder up and down at least 6
times using the leveler’s own hydraulic power.
8. Connect the hoist cylinder to the base of the
Imbed is channel.
9. Adjust down speed flow control to factory
settings. The settings are 1-1/2 turns out from
fully closed.
10. Maintenance props must be moved back to the
working positions.
11. The lip cylinder is self purging. Lower the leveler
to a 45 degree angle. Cycle lip by pressing the
lower and lip button together to lower the lip.
Press the raise and lip button together to raise
the lip. WARNING: Stay clear of lip at all times
as it may fall if air is present in the system.
12 Make sure all air is purged from the hydraulic
cylinders after set-up and any time air is
introduced to the system. Failure to do this may
result in serious personal injury or death.
IMPORTANT
DO NOT connect the dock leveler electrical wiring
and ground connections until all welding has been
completed.
DO NOT ground welding equipment to any
hydraulic or electrical components of the dock
leveler. Always ground welding equipment to the
dock leveler frame, NEVER to the platform.
Failure to follow these instructions may damage the
motor, hoist cylinder, wiring, and/or control panel.
DO NOT grind or weld if hydraulic fluid or other
flammable liquid is present on the surface to be
ground or welded.
DO NOT grind or weld if uncontained hydraulic
fluid or other flammable liquid is present. Stray
sparks can ignite spills or leaks near the work area.
Always clean up the oil leaks and spills before
proceeding with grinding or welding.
Always keep a fire extinguisher of the proper type
nearby when grinding or welding.
Failure to follow these instructions may result in
serious personal injury or death.
Following start-up or if the platform is raised using
an external lifting device or the hydraulic system
is opened to atmosphere, air will enter into the
hydraulic system.
Whenever this happens, purge air from hydraulic
system fully. Failure to do this may result in
damage to the equipment, serious injury or death.