Operating Instructions for Suspended Jacks
20
8
Troubleshooting
The following lists possible problems that may occur. If an undefined malfunction occurs, contact
customer service.
Problem
Cause
Troubleshooting
Piston rod [10] gives in under
load.
•
Cylinder tube corroded,
piston boots worn or ball
valves leaking.
Request customer service.
•
Hydraulic oil contaminated.
Change the hydraulic oil. (
Hydraulic oil emerges at the
piston rod [10].
•
Damage to the piston rod
has destroyed the seal.
Request customer service.
Hydraulic oil emerges at the
pneumatic control valve.
•
Condensate in the hydraulic
oil.
Check hydraulic oil level (
7.5) and drain condensate, if
necessary. (
•
Piston boot on lift cylinder
leaking.
Request customer service.
Control elements [2] do not
return to the initial position.
•
Contamination.
Clean or replace pneumatic
control valve.
(
Air emerges at the pneumatic
control valve.
•
Contamination, damage or
defective seal.
Clean or replace pneumatic
control valve.
(
Problem
Cause
Troubleshooting
Jack does not provide full
lifting force.
•
Supply pressure too low.
Check supply pressure. (
•
Load not centered.
Position load centered.
Piston rod [10] gives in under
load.
•
Cylinder tube corroded,
piston boots worn or
pneumatic control valve
leaking.
Request customer service.
Piston rod [10] moves up or
down by itself.
•
Pneumatic control valve
leaking.
Replace pneumatic control
valve. (
Control elements [2] do not
return to the initial position.
•
Contamination.
Clean or replace pneumatic
control valve.
(
Air emerges at the pneumatic
control valve.
•
Contamination, damage or
defective seal.
Clean or replace pneumatic
control valve.
(
9
Decommissioning and Disposal
Drain hydraulic oil. (
Disassemble the jack. (
Correctly dispose of hydraulic oil and lift.
H E
P
Содержание GH Series
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