5.7 Solving possible problems:
Problem
Electrical motor not working.
The pump does not deliver any
hydraulic oil or delivers insufficient
hydraulic oil such that the cylinder
only partially comes out or judders.
The pump generates insufficient or
too much pressure.
Cylinder(s) is/are not retracted.
© BETEX Tools
Cause
No power supply.
A cable is broken.
Motor defect.
Motor relay defect.
No Fuse Breaker has switched off.
Too little hydraulic oil.
Air in the system.
Suction filter blocked.
Dirt in the system.
Hydraulic oil has too high viscosity.
Valve overpressure not set properly.
Check whether the manometer is
still OK.
Check whether the system is leaking.
Overpressure valve is not set properly.
The valve can stick when the system is
left under pressure.
Cylinder sticks mechanically.
The hose breaks away from the
cylinder and the cylinder is fitted with
hose rupture protection.
The cylinder is rigged with quick
couplings and a quick coupling has
come off.
Solution
Check whether sufficient voltage is
available.
Check the cables for any breaks and
replace if necessary.
Replace the motor.
Replace the relay.
Switch the NFB on
Top up the reservoir to 1.5 to 2 cm
under the lid.
Bleed the system.
Remove the pump lid and clean the
filter.
Remove the pump lid and
disassemble the system and clean the
inside of the pump.
Replace the oil with a lighter oil.
Set the overpressure valve.
Replace or calibrate the manometer.
Stop the leaks.
Correctly set the overpressure valve.
Remove the pressure from the system
and replace the valve. Take care with
hydraulic oil that is under pressure.
Remove the blockage.
Fit a new hose, bring it up to pressure
and allow the cylinder to return to
normal.
Reconnect the quick coupling. Take
care with hydraulic oil that is under
pressure.
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