ALFRA AHP-M Mode D'emploi page 19

The connected tool does
not move.
The tool does not come
out completely or does not
build up any pressure.
All manuals and user guides at all-guides.com
Is the tool in its final
position?
Is the tool under a high
hydraulic pressure?
Check the start capacitor
and the operating
capacitor.
Is the power supply
ensured?
Does the motor turn?
Are the hydraulic
couplings correctly
connected?
Is the magnetic valve
energized and does it
conduct the oil flow to the
tool?
Push the plastic cap of the
valve and feel if there is a
slight movement.
Check the power supply of
the magnetic valve.
Did you mount the
ventilation screw to the oil
tank?
Check the oil level inside
the tank.
The pressure is not built
up completely on the tool.
Try another tool and check
its function.
Is the oil foaming and is
there enough oil inside the
tank?
The capability of the pump
to start against counter-
pressure is limited (appr.
200-300 bar).
The start capacitor or the
operating capacitor is
defective.
See above
The quick couplings are
not engaged completely or
the coupling connection is
not completely twisted
together.
Hydraulic couplings are
self-sealing and open only
if they are plugged
in/screwed in as far as
they will go.
The hydraulic coupling is
dirty and does not close
correctly.
The magnetic valve is
defective or overheated.
Wrong commanding signal
or defective PCB.
The oil tank is not aerated
sufficiently.
The oil level inside the
tank is too low.
There is air inside the
hydraulic system.
The tool is defectice.
The suction filter is dirty or
blocked.
Let the tool return to its
starting position or reduce
the pressure on the tool or
inside the hydraulic
system.
Replace the component or
have the pump repaired
by the distributor or
manufacturer.
See above
Plug in / screw in the
couplings as far as they
will go.
Clean the couplings and
plug/screw them in as far
as they will go.
Replace the component or
have the pump repaired
by the distributor or
manufacturer.
Replace the component or
have the pump repaired
by the distributor or
manufacturer.
Have the electrical
connection checked and
repaired by
a qualified electrician.
Replace the component or
have the pump repaired
by the distributor or
manufacturer.
Screw the ventilation
screw into the oil tank
vent.
Fill the tank with a
sufficient quantity of
hydraulic oil HLP46.
Deaerate the pump, hoses
and tool.
Replace or repair the tool.
Replace the component or
have the pump repaired
by the distributor or
manufacturer.
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