Poweramp EH SERIES HYDRAULIC User Manual download pdf (Page 37)

4111-0004 —November 2003

Rev “B” February 2011

TROUBLESHOOTING

Symptom Possible Cause Solution

Platform does not rise.

Pump operates in

pressure relief mode.

Heavy object(s) on platform. Remove object(s) from platform.

NOTE: For safety reasons, the dock leveler

is designed to lift only the platform’s

own weight.

Dock leveler binds. Check for visible obstructions that could cause

binding. Remove obstructions. If no obstructions

found, call Poweramp Technical Services. See

inside back cover for phone number and address.

Pressure relief set too low. Increase pressure relief. See Adjust Main Pressure

Relief in the Adjustment section.

NOTE: The pressure relief valve must not

be set at a level that causes the

motor operating current to exceed

the full load amp value* at any time,

including when operating in

pressure relief.

* The full load amp value can be found on the inside cover of the

control panel.

Platform rises slowly. Low hydraulic fluid. Add fluid as needed. See Periodic Maintenance in

the Maintenance section.

Contaminated hydraulic

system.

Clean and inspect valves. Flush contaminated oil

from hydraulic system. Fill system with new oil. See

Periodic Maintenance in the Maintenance section.

Damaged or restricted

hydraulic hose(s).

Replace damaged hose(s). Remove restriction.

Pressure relief set too low. Increase pressure relief. See Valve Adjustment

section.

NOTE: The pressure relief valve RV1 must

not be set at a level that causes the

motor operating current to exceed

the full load amp value* at any time,

including when operating in

pressure relief.

* The full load amp value can be found on the inside cover of the

control panel.

Pump motor loads down

when platform reaches

the full raised position.

Pressure relief set too high. Decrease pressure relief. See Adjust Main Pressure

Relief in the Adjustment section.

NOTE: The pressure relief valve RV1 must

not be set at a level that causes the

motor operating current to exceed

the full load amp value* at any time,

including when operating in

pressure relief.

* The full load amp value can be found on the inside cover of the

control panel.

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 51 52

Comments to this Manuals

No comments

Poweramp EH SERIES HYDRAULIC User Manual Page 37

Comments to this Manuals

Related products and manuals for Hoist Poweramp EH SERIES HYDRAULIC