Poweramp POWERHOOK SERIES - Manual (Page 29)

NOTE: Test operating range of PowerHook without
truck/trailer backed into dock.
1. Position the selector switch in the Normal position,
make sure BYPASS mode has not been activated.
-Red Inside Light, No Amber Light
-Green Outside Light
2. Momentarily press the ENGAGE button. Hook
should lower, fully extend, fully raise, partially
retract, lower, and then fully retract.
-Inside Amber Light for 30 seconds, then Red
*Alarm will sound if equipped
-Outside Red Light for 30 seconds, then Green
3. Measure upper and lower limits of operating
range. The upper and lower limits of the
vertical
operating range should be 26”-28”
and 8”-9” respectively (Application Dependent).
Testing PowerHook Operating Range
ADJUSTMENT AND TESTING
Follow the installation instructions found in the
PowerHook Installation & Operation Manual prior
to attempting any adjustments.
With the PowerHook installed in the hook pan
and power supplied to the pump/motor, proceed
with the PowerHook adjustments.
NOTE: Hook cannot be stopped while cycling. To
obtain measurements place tape measure next to the
moving hook.
IMPORTANT: The upper and lower limits of the
operating range will vary with application pit depth.
These limits may not be attainable if variations in dock
height and/or pit depth exist. Consult factory if this
situation occurs.
When service under the dock leveler is required,
always lock all electrical disconnects in the OFF
position after raising the platform and engaging the
maintenance prop. Failure to do this may result in
serious personal injury or death.
Always post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the dock leveler before
maintenance is complete. Failure to do this may
result in serious personal injury or death.
Always stand clear of the dock leveler lip when
working in front of the dock leveler.
The maintenance prop MUST be in the service
position when working under the dock leveler.
For maximum protection, use an OSHA approved
locking device to lock the maintenance prop in
the service position. Only the person servicing
the equipment should have the key to unlock the
maintenance prop.
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.
Failure to follow these instructions may result in
serious personal injury or death.
8”-9”
26”-28”
Hook In Highest
Position
Drive
Hook In Lowest
Position
Hook Must
Clear pit
Floor While
Extending
Store
Lower Limit
Extended
Upper Limit
Extended
Alarm
4111-0010 — Nov 2010 27