19
PENTALIFT EQUIPMENT CORPORATION
M086R06
December 8, 2017 10:37 AM
LDL Dock Lift Owners Manual
TROUBLE SHOOTING GUIDE
NOTE:
This equipment has been fully tested and confirmed to be operational at the factory. Historically, the majority
of operating problems are caused by unnecessary tampering by unqualified personnel. To conform to the terms of the
Warranty, contact your authorized Pentalift representative if you are having any difficulty with the dock lift during the
warranty period. Do not risk voiding the warranty by tampering with the equipment.
See page 16 for recommended hydraulic oil.
BEFORE DOING ANY ELECTRICAL WORK, BE CERTAIN THAT THE POWER IS
DISCONNECTED WITH A FUSED DISCONNECT, PROPERLY TAGGED AND LOCKED
OUT. FUSED DISCONNECT AND LOCKOUT DEVICE (SUPPLIED AND INSTALLED
BY OTHERS) MUST MEET WITH ALL APPLICABLE CODES AND REGULATIONS.
ALL ELECTRICAL WORK MUST BE PERFORMED BY A QUALIFIED ELECTRICIAN IN
ACCORDANCE WITH ALL APPLICABLE CODES AND REGULATIONS.
ARC FLASH AND SHOCK HAZARD PPE (PERSONAL PROTECTION EQUIPMENT)
REQUIRED. DE-ENERGIZE EQUIPMENT BEFORE WORKING ON OR INSIDE. DO
NOT OPEN COVER WITHOUT APPROPRIATE PPE. REFER TO NFPA 70E FOR PPE
REQUIREMENTS. THIS PANEL MAY CONTAIN MORE THAN ONE POWER SOURCE.
HAZARDOUS VOLTAGE WILL CAUSE SEVERE INJURY OR DEATH.
THE RELIEF VALVE ON THE POWER UNIT IS PRESET AT THE FACTORY. IT IS AN
IMPORTANT SAFETY DEVICE. DO NOT ADJUST OR REMOVE THE RELIEF VALVE
.
NOTICE
1. Dock lift will not rise when the push button is depressed.
a)
Re-check all wiring and hydraulic connections. Refer to the wiring diagram found inside the motor control panel.
b) Ensure proper hydraulic fluid level. (See page
c) Examine all moving parts for obstructions.
d) Confirm that power is reaching the power unit.
e)
On 3 phase units, ensure phase polarity is correct. Incorrect polarity will cause the dock lift not to lift. The motor
will run backwards resulting in cavitation and possible damage to the pump.
f)
If the problem cannot be solved, consult your authorized Pentalift representative.
2. Motor runs, however, the dock lift does not rise.
a) Ensure proper hydraulic fluid level. (See page
b)
On 3 phase units, ensure phase polarity is correct. Incorrect polarity will cause the dock lift not to raise. The
motor will run backwards resulting in cavitation and possible damage to the pump.
c)
Check for any obstructions.
d) Check to ensure the load does not exceed the rated capacity of the dock lift.
e)
If the problem cannot be solved, consult your authorized Pentalift representative.
3. Breaker is disengaging or supply line fuses are burning out.
a) Ensure proper voltage is reaching the motor. (See Electrical Reference Chart.)
b)
Check for any obstructions.
c)
Check all wiring connections.
d)
If the problem cannot be solved, consult your authorized Pentalift representative.
NEVER GO BENEATH THE PLATFORM UNLESS THE LOAD IS REMOVED AND THE
SCISSOR MECHANISM IS PROPERLY BLOCKED (SEE page 15.)
ONLY TRAINED AND QUALIFIED PERSONNEL SHALL PERFORM INSPECTION OR
MAINTENANCE AND SERVICE PROCEDURES.
BEFORE DOING ANY INSTALLATION, MAINTENANCE, INSPECTION OR TROUBLE
SHOOTING, BARRICADE THE INSIDE (AND OUTSIDE IF APPLICABLE) WORK AREAS
FOR SAFETY AND POST APPROPRIATE WARNING SIGNS. FOLLOW ALL WARNINGS
IN THE SAFETY INFORMATION AND WARNINGS SECTION OF THIS MANUAL.
