Schaeffler PUMP1000-2, User Manual

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BA 54
M1M2 M3 M4 M5
EN Remedy of malfunctions
Malfunctions become apparent in operation of the
hydraulic pump. Once the malfunction has been
rectified, the hydraulic pump is normally ready for
use again.
If unsuitable replacement parts are used or the
parts are incorrectly mounted, hydraulic oil can es-
cape under high pressure. Hydraulic oil escaping
under high pressure can easily cut through cloth-
ing, skin, muscle and other tissue. This can cause
serious injuries.
Troubleshooting and rectification may only be car-
ried out by qualified professionals and in compli-
ance with accident prevention regulations. Schaef-
fler strongly advises that only original replacement
parts and accessories authorised by Schaeffler
should be used.
Possible malfunctions of hand pumps
WARNING
Piston does not
move out
Escape valve not closed completely Close escape valve
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58
The hand pump was positioned with
the head facing up
Position the hand pump horizontally with the feet down-
wards
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52
Check the connections.
Replace leaking parts as necessary or send the hydraulic
pump to Schaeffler for repair.
The system is overloaded (the pressure
control valve in the pump is activated
in order to prevent overload of the
system)
Avoid overload. Use a pump of sufficient power.
Worn or damaged pump Send the hydraulic pump to Schaeffler for repair.
Oil tank is overfilled Stop operation: completely release the pressure, separate
the pump. Then drain the oil down to the maximum fill level
V
max
Cylinder moves
out in a jolting
motion or not
completely
Air in the oil circuit Completely release the pressure, check the connections,
bleed the oil circuit
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58
The cylinder piston is bent or damaged
and is therefore being subjected to fric-
tion forces
Send the hydraulic pump to Schaeffler for repair.
Too little oil in the tank Refill with oil
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54
The oil requirement of the cylinder is
greater than the usable volume of the
tank
Use a pump with a larger oil tank
The piston sinks
back under load
Escape valve leaking Send the hydraulic pump to Schaeffler for repair.
Leak in the oil circuit Completely release the pressure, check the connections.
Leakage at cylinder seals Replace the seals; see the user manual for the consumer
device
Check whether this is due to contamination. Clean parts.
Replace any worn parts using original replacement parts
Worn seals Replacement of seals by qualified professional or Service at
Schaeffler
Contamination in the oil circuit Change the oil
Cylinder does not
move out comple-
tely or only very
slowly
Oil does not flow freely back into the oil
container
Check whether the escape valve is completely open and
the nipples and sleeves are correctly coupled.
Check whether there is too much oil in the tank. Attention,
possible rupture risk of tank. Close escape valve, slowly
open bleed screw/cap, then turn completely and drain oil
into extra collection container.
Escape valve is not opened sufficiently Open the escape valve completely
Contamination in the oil circuit
Change the oil
Lines blocked Send the hydraulic pump to Schaeffler for repair.
Leak in the oil circuit
Leakage at couplings or hose fittings
Malfunction Possible cause Remedy
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