Poweramp RAIL RAMP SPECIALTY 1.1995 - Manual (Page 22)

Problem Cause(s) Solution(s)
19
Railramp does not operate. Motor
energizes but does not run (motor
hums, overload device should trip). 1. 3 phase units only--voltage at
one line is absent (motor being
single phased).
2. 1 phase units only--motor
centrifugal switch faulty.
1A. Fuses at motor branch circuit
overcurrent device only--check
for tripped fuse. Replace
fuse. Determine cause of
fuse tripping.
1B. Check motor starter for
component failure. Discon-
nect wires at load side of
starter. Use voltmeter to read
line-to-line voltages at line
side and load side of starter.
Line side and load side
voltage values should be
nearly identical. Replace
starter if values are not
identical.
1C. Check all wiring to motor for
high resistance (loose) or no
connection.
2. Replace motor.
1. Add fluid, see Preventative
Maintenance section, page 15.
2. Locate pressure relief valve.
Turn valve 3/4 turn (CW).
Increase the valve set point until
the Railramp operates properly.
NOTE: The valve set point
should NOT be set at a level
that will cause the motor
operating current to exceed its
full load amp value at any time,
including when the unit is
operated in pressure relief.
3. Replace damaged hose(s).
Remove blockage from hose(s).
1. Low hydraulic fluid.
2. Pressure relief valve set too low.
3. Damaged or blocked hydraulic
hose(s).
Railramp operates slowly.
1. Add fluid. See Preventative
Maintenance section, page 15.
1. Low hydraulic fluid. Railramp does not fully raise or
motor overcurrent device and/or
overload device continuously tripping.
Troubleshooting Guide