Poweramp VH SERIES HYDRAULIC - Manual (Page 21)

19 4111-0002 — January 2012 19
INSTALLATION
5. Raise the leveler platform fully by pushing and
holding the RAISE button .
NOTE: The platform of a properly operating dock
leveler will automatically stop rising when
it reaches approximately 2 – 3 inches from
its full raised height, at which point, the lip
extends. When the lip is fully extended, the
platform will continue to rise until it reaches
the full raised position. (If the lip does not
extend or extend fully, see Platform Rises to
Full Height, But Lip Does Not Fully Extend in
the Troubleshooting section.)
6. Release the RAISE button to lower the platform.
As long as there is no truck present at the dock,
the platform will lower to the full below-dock
position as the lip folds.
NOTE: If a truck is present, the platform will lower
until the lip rests on the truck/trailer bed. (See
Operating Instructions in Operation section.)
1. Disconnect the external lifting device and chains
from the lifting brackets.
2. Check that the leveler is flush with the dock floor
and that the platform lip contacts both lip keepers
evenly.
If an excessive transition exists between the dock
floor and leveler and/or lip does not contact both
lip keepers evenly, contact Poweramp Technical
Services for further instructions.
3. Install the dock bumpers as required.
4. Turn the main electrical power ON.
Put New Dock Leveler Into Service
7. When the platform lowers to the full below-dock
position, wait 5 seconds after the lip has folded to
allow lip cylinder to fully retract. Push and hold the
RAISE button until the platform rises just enough
to clear the lip keepers, then release the RAISE
button to allow the platform to lower to the cross-
traffic (stored) position (lip engages lip keepers).
NOTE: For dock levelers equipped with the Auto
Return To Dock (ARTD), the platform will
automatically return to the cross-traffic
position if the ARTD is enabled. When the
platform is at the full below-dock position,
there is a six-second delay before the
platform will automatically rise to the cross-
traffic position.
8. Perform steps 5 – 7 at least four times to purge
any air that may be in the hydraulic system and to
ensure proper operation.
9. Raise the platform fully. Hold the platform at this
position using the RAISE button and move the
maintenance prop to the service (upright) position.
Release the RAISE button to allow the platform to
lower until it is resting on the maintenance prop.
10. With the maintenance prop supporting the
platform, remove the lifting brackets and front
shipping bar in between lip keepers.
11. If equipped with vertical weather seals, position
the seals so that the seals are directly under and
aligned with the overhead door.
12. Push and hold the RAISE button until the
maintenance prop drops to its stored position.
Release the RAISE button and allow the platform
to lower fully.
13. Perform step 7 if not equipped with ARTD.
Always stand clear of platform lip when working in
front of the dock leveler. Serious personal injury or
death may result.
Unless the dock leveler is equipped with a tethered
remote, two people are required to engage the
maintenance prop: one person to operate the unit,
the other person to engage the maintenance prop.