Fault Diagnosis - Cembre B70M-P24 Manual De Uso

Always use clean recommended oil, see § 1.
Do not use old or recycled oil.
Do not use hydraulic brake fluid.
Insulated versions of the pump contain special insulating oil which must not be polluted with any
other types of oil.
Ensure that used oil is disposed of in accordance with current legislation.
5.2) Purging air bubbles from the internal hydraulic circuit
The operations of connecting and disconnecting the flexible hose and hydraulic heads could cause air
bubbles to form in the hydraulic circuit over time, adversely affecting the performance of the pump.
To purge air bubbles from the circuit proceed as follows:
– Connect the hose and the hydraulic head to the pump.
– Place the hydraulic head onto a flat surface, keeping it in a vertical position.
– Leave the pump in inclined position (see Fig. 8) at a height approximately 1,5 m (4.9 ft) higher
than the head.
– Operate push button until the pressure switch intervenes.
– Completely discharge the oil pressure pushing the release button.
– Repeat at least 3-4 times to ensure all bubbles collect in the upper part of the reservoir.
– Check the oil level, topping up if necessary (see § 5.1).
SYMPTOM
The pump does not start when the
remote controller push button.
The pump starts but immediately
stops.
The pump starts but the oil is not
pressurised.
No advancement, slow or pusat-
ing advancement of the ram of
the hydraulic head connected to
the pump.
After long use the pump will not
start.
It is not possible to couple the flex-
ible hose to the pump.
If after these actions, the pump still does not operate correctly, please return it to Cembre (see § 7).
9

6. FAULT DIAGNOSIS

POSSIBLE CAUSES
Discharged battery.
Incorrect connection of the remote
controller plug.
Incorrect connection of the high
pressure hose to the pump or to the
hydraulic head.
Insufficient oil in the reservoir.
Air in the internal hydraulic circuit
of the pump.
The thermal switch has triggered
because of motor overheating.
Residual pressure of the oil in the
hose.
(Ref. to Fig. 8)
REMEDY
Charge the battery (see § 3.5).
Connect plug correctly and secure
with the locking bezel (see § 3.1).
Check the quick couplers for correct
connection (see § 3.1).
Top up the oil reservoir (see § 5.1).
Purge air bubbles in the internal
hydraulic circuit (see § 5.2).
Allow the pump to rest and wait until
the motor has cooled down.
Connect the flexible hose to the
pump keeping the release button
pushed.