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11. Troubleshooting
If the equipment is operated properly you should experience no problems with malfunctions or faults.
In the event of any malfunctions or faults, please check the following before you contact your customer
services.
Fault
Possible cause
Remedy
The lifting forks
cannot be raised to
the maximum height
Too little hydraulic oil
Fill in hydraulic oil
The lifting forks
cannot be raised
No hydraulic oil
The hydraulic oil is dirty
The setting nut (K) is too high
Air in the hydraulic unit
Fill in hydraulic oil
Change the hydraulic oil
Set the setting nut (K) (see section 7.)
Vent the hydraulic unit (see section 8.)
The lifting forks
cannot be lowered
The piston rod or pump housing has
been damaged by overloading or an
uneven load distribution
The piston is stuck
The setting nut (K) is set wrongly
Replace the piston rod or pump
housing*
Replace the piston*
Set the setting nut (K) (see section 7.)
Leaks
The seals are worn or damaged
The hydraulic module is defective
Replace the seals*
Replace the hydraulic module*
The lifting forks
descend without the
relief valve working
The hydraulic oil is dirty
The hydraulic module is defective
Air in the hydraulic unit
The seals are worn or damaged
The setting nut (K) is set wrongly
Change the hydraulic oil
Replace the hydraulic module*
Vent the hydraulic unit (see section 8.)
Replace the seals*
Set the setting nut (K) (see section 7.)
Important!
* This work must be performed by qualified and approved specialists.
The reprinting or reproduction by any other means, in whole or in part, of documentation and papers
accompanying products is permitted only with the express consent of the iSC GmbH.
Subject to technical changes
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