® Copyright ATH-Heinl GmbH & Co. KG, 2013, All rights reserved. / Misprints and technical changes reserved / Issue: 09/2016
19
Water or air in hydraulic circuit
Bleed hydraulic circuit
Damaged cylinder sealings
Check and if necessary replace
Lift does not raise the indicated load
Not enough hydraulic oil
Check oil level (lift is lowered), if
necessary refill
Pump is defect
Check the pump, if necessary replace
Pressure control valve wrong
adjusted
Adjust correctly
Lift raises or lowers jerkily
Leakage, water or air in hydraulic
circuit
Bleed the hydraulic system. If
necessary eliminate leakage
Filter of the pump is dirty
Check and clean if necessary
Pump sucks air
Check the sealing and replace if
necessary
Lift does not stop at the max. height
Limit switch is wrong adjusted resp.
defect
Check adjustment of limit switch
Replace a defect limit switch
