Poweramp VS VERTICAL SPECIALTY 2.1995 - Manual (Page 16)

Railramp
Problem Cause(s) Solution(s)
1. Motor overload device tripped.
2. Motor starter (3 phase) or motor
relay (1 phase) not energizing.
1. Reset overload relay (3 phase)
or replace fuse (1 phase).
Determine cause of device
tripping. NOTE: If replacing
fuse, replace with device of
equal specifications.
2. Check device that sends signal
to starter or relay. Device may
have failed OPEN. Use meter
to check for contact closure
when device is ON.
The VS dockleveler does not operate.
Motor does not energize.
WARNING
Always barricade the work area to prevent unauthorized use of the unit during repair or maintenance procedures.
Always lock out all electrical disconnects after raising platform and setting maintenance lock(s) when service under
the unit is required. More than one electrical disconnect switch may be required to de-energize the equipment.
Perform the following procedures prior to beginning detailed troubleshooting:
A. Check all fuses inside the control assembly(s). Replace any bad fuse with one of equivalent specifications.
B. Confirm presence of all necessary voltages inside the control assembly. Check branch circuit fuses and/or
circuit breakers if all voltages are not present.
Always engage prop locks when working under or in front of the VS leveler.
WARNING
WHEN A HYDRAULIC
CYLINDER IS EXTENDED,
IT MUST BE FULL OF
HYDRAULIC FLUID TO
SUPPORT A LOAD.
EXTENDING HYDRAULIC
CYLINDERS BY A MEANS
OTHER THAN HYDRAU-
LIC POWER CAN RESULT
IN SEVERE PERSONAL
INJURY OR DEATH.
13
Troubleshooting Guide