Poweramp CENTRAPOWER - Manual (Page 20)

TROUBLESHOOTING
18 4111-0030 — Nov. 2009
Symptom Possible Cause Solution
Platform or restraint
does not work correctly
but Motor hums, but
does not run. No voltage is present on
one line.
NOTE: A motor that is
missing voltage on one line
is said to be single-phased.
Check for blown fuses at branch circuit disconnect.
Replace fuse. Determine cause of blown fuse.
Check motor starter as follows:
1. Disconnect wires at load side of starter.
2. Energize the starter.
3. Measure line-to-line voltage at line side of starter.
4.
Measure line-to-line voltage at load side of
starter.
5. Line-side and load-side voltages should be
approximately the same. Replace starter if
voltage values are considerably different from
one another.
Check all wiring to motor for high resistance or no
connection.
Platform does not rise to
full height. Low hydraulic fluid. Add fluid as needed. See Periodic Maintenance in
the Maintenance section.
Platform or restraint not
work correctly. Phase reversed. Reverse any two legs at the branch circuit
disconnect.
Platform rises slowly Pressure relief set too low. Consult the factory, contact tech before adjustments
are made.
Platform or restraint
does not work correctly
and motor runs but
the other units work
correctly. Bad coil on Centra Power
valve block. Check power to the coil should have a magnetic pull
when energized (Pump Motor must be running)
Bad Valve on Centra Power
valve block. Remove and clean spool valve or replace with new
or good working valve.
Platform or restraint
works when other units
have been activated. Bad Valve on Centra Power
valve block. Remove and clean spool valve or replace with new
or good working valve.
Platform does not rise.
Pump runs, Coil and
valve is good. See Leveler manual.
Restraint does not work.
Pump runs, Coil and
valve is good. See restraint manual.