Holmatro HVLW 16 S 2 Manual página 26

EN
7 Troubleshooting
7.1 General
Consult the Holmatro dealer if the listed solutions do not give the desired result, or in case of other
problems. For malfunctions or repair, always specify the model and serial number of the equipment.
7.2 The plunger does not extend or does partly extend
/i
Possible cause
The pressure relief valve on the pump is open.
The couplers are not connected properly.
The oil level in the pump is too low.
The connected pump does not operate.
The plunger jams.
7.3 The plunger extension is jerky
/i
Possible cause
There is air in the system.
7.4 The plunger extends more slowly than usual
/i
Possible cause
The couplers are not connected properly.
The connected pump does not operate.
7.5 The plunger extends but does not retain its pressure
/i
Possible cause
A jack seal leaks.
The system is not arranged correctly.
7.6 The plunger leaks oil
/i
Possible cause
Seals are worn or damaged.
The jack is damaged internally.
7.7 The plunger does not return or does return more slowly than usual
/i
Possible cause
The pressure relief valve on the pump is closed.
The couplers are not connected properly.
Too much oil returns to the pump.
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Solution
Close the pressure relief valve.
Connect the couplers in the correct way.
Add hydraulic oil to the correct level.
Have it repaired by a Holmatro Certified
Technician.
Have it repaired by a Holmatro Certified
Technician.
Solution
De-aerate the system.
Solution
Connect the couplers in the correct way.
Have it repaired by a Holmatro Certified
Technician.
Solution
Repair the jack seal.
Arrange the system in the correct way.
Solution
Have it repaired by a Holmatro Certified
Technician.
Solution
Open the pressure relief valve on the pump.
Connect the couplers in the correct way.
Drain the hydrauilic oil tank to the correct level..
916.219.170_006 HVLW