Poweramp VS VERTICAL SPECIALTY 4.2009 - Manual (Page 32)

TROUBLESHOOTING
Symptom Possible Cause Solution
Platform does not rise to
full height. Low hydraulic fluid. Add fluid as needed. See Periodic Maintenance in
the Maintenance section.
Platform does not rise. Coil energized on the float
coil. Remove wire of terminal strip to the float coil, If
leveler raises possible bad PLY or relay
Bad spool valve. Remove and clean spool valve or replace with new or
good working valve.
Platform Does not rise
to full height. Low hydraulic fluid. Add fluid as needed. See Periodic Maintenance in
the Maintenance section.
In correct adjustment on the
Limit switch. Adjust the limit switch so the plate form leans 3 deg
toward the door (see adjustments) .
Lip does not extend. “C” Coil not energized Check power to the spool valve should have a
magnetic pull when energized (Pump Motor must be
running)
Bad spool valve. Remove and clean spool valve or replace with new or
good working valve(Pump Motor must be running).
Lip does not lower. “C”, “D” and “E” Coils not
energized All three valves must be energized. Check power to
the all spool valves they should have a magnetic pull
(Pump Motor must be running).
Bad spool valve. Remove and clean spool valves or replace with new
or good working valves.(Pump Motor must be
running)
Platform does not lower. Blue stored light not on. Limit switch not adjusted correctly (see adjusts).
Possible bad switch stored limit switch
Leveler pump runs but
Platform does not lower. Prop kicker does not kick. Possible prop kicker Solenoid not working.
Possible Mercury switch not working.
Leveler pump runs prop
kicker works but Platform
does not lower. Storage Prop Not enough slop in the maintenance prop
(see page 26).
Leveler pump runs prop
kicker works but Platform
does not lower. “D” and “E” Coils not
energized Both valves must be energized. Check power to the
all spool valves they should have a magnetic pull
(Pump Motor must be running).
Bad spool valve. Remove and clean spool valves or replace with new
or good working valves.(Pump Motor must be
running)
4111-0008 — April 2008 30