HERKULES AHW 2500/1 Instructions D'origine page 14

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
The lifting forks
cannot be raised to
the maximum height
The lifting forks
cannot be raised
The lifting forks
cannot be lowered
Leaks
The lifting forks
descend without the
relief valve working
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
Anl_AHW_2500_1_SPK7.indb 14 Anl_AHW_2500_1_SPK7.indb 14
GB
Possible cause
Too little hydraulic oil
No hydraulic oil
The hydraulic oil is dirty
The setting nut (K) is too high
Air in the hydraulic unit
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
The seals are worn or damaged
The hydraulic module is defective
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
- 14 -
Remedy
Fill in hydraulic oil
Fill in hydraulic oil
Change the hydraulic oil
Set the setting nut (K) (see section 7.)
Vent the hydraulic unit (see section 8.)
Replace the piston rod or pump
housing*
Replace the piston*
Set the setting nut (K) (see section 7.)
Replace the seals*
Replace the hydraulic module*
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.)
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