RITE-HITE Genisys HL-900, Owner'S Manual

Page: 26 / 40

Genisys™ HL-900 Dock Leveler
Owner's Manual
Rite-Hite
®
26 Publication: AMEN00160 2021‑08‑17
TROUBLESHOOTING
# PROBLEM PROBABLE CAUSE REMEDY
1 Platform does not raise Power has been disconnected Make sure that power has not been disconnected
Verify that disconnect circuit breaker or fuses are not tripped
The motor is not wired correctly Make sure the motor has been wired according to the motor wiring
diagram See
"Motor FLA/Connection Detail" on page 7
Overload tripped Push RESET on overload relay
Debris is lodged on or around the leveler Do an check for and remove any lodged materials on or around the
leveler
Hydraulic fluid level is low.
Do an oil level check when the unit is held open with the
maintenance strut See
"Figure 11" on page 20
Refill if necessary.
2 Leveler runs
continuously The pushbutton, contact block or motor
contactor is damaged Repair or replace components
3 Lip extends slowly and/
or does not extend Debris on lip hinge Remove debris from the lip hinge
Lip impacted or bent Lubricate per maintenance procedures or replace lip
Hydraulic fluid level low.
Do an oil level check when unit is held open with the maintenance
strut See
"Figure 11" on page 20
. Refill if necessary.
4 Platform does not lower Velocity fuse has locked up Attempt to raise the unit to unlock the velocity fuse
Debris is lodged on or around the leveler Do an check for and remove any lodged debris on or around the
leveler
5 Platform raises very
slowly Weight on top of platform Remove weight from platform
Hydraulic fluid level is low.
Do an oil level check when the unit is held open with maintenance
strut See
"Figure 11" on page 20
. Refill if necessary.
Low voltage Make sure there is ± 10% nominal voltage while unit running
Power unit/pump/motor failure Replace power unit assembly
6 Lip does not store
properly The lip stop bolt is not adjusted properly Verify that the lip stop bolt is properly adjusted
Debris Remove debris
Lip keepers Repair or replace the lip keepers
7 Fuse or circuit breaker
trips Undersized fuse or circuit Make sure there is 20 amp for 120VAC and 15 amp for 240VAC
Low voltage Make sure there is ± 10% nominal voltage while unit running
Short circuit in wiring Examine and repair wiring connections
Wire gauge is too small Distance too long Make sure the minimum wire gauge per distance is correct See
"Motor FLA/Connection Detail" on page 7