Poweramp VH SERIES HYDRAULIC - Manual (Page 30)

28 4111-0002 — January 2012 28
VH levelers are equipped with the optional Auto
Return To Dock (ARTD) if leveler not interlocked with
a truck restraint.
The ARTD allows the platform to automatically
return to the cross-traffic (stored) position after the
truck departs. The ARTD uses a proximity switch
(B) located under the platform and a piece of angled
steel called the target (E) that is attached to the lip
hinge tube (F).
The proximity switch provides a six-second delay
after the platform has lowered to the full below-dock
position, after which, the platform will return to the
cross-traffic position. The switch also contains an
indicator light (H) that can be used for diagnosing
and adjusting the switch.
NOTE: Some proximity switches have an indicator
light at the back of the housing and some
have the light at the side of the housing.
A— Cable
B— Proximity Switch
C— Bracket
D— Lock Nuts E— Target
F— Lip Hinge Tube
G—Platform Lip
H— Indicator Light
Adjust Auto Return To Dock (ARTD)
Adjust the ARTD as Follows:
1. Raise platform fully and engage the maintenance
prop in the service position. Allow platform to rest
on the prop so the lip will fully fold until it contacts
the lip stops.
2. Turn OFF all electrical power to the dock leveler.
Attach safety lockout and tagout devices.
ADJUSTMENTS
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.
A
C
E
D
F
G
H
B