Fault Diagnosis; Return To Cembre For Overhaul - Cembre PO7000 Operation And Maintenance Manual

ENGLISH
5.3) Replacement of the pressure hose
– Hold the pump base (42) in a vice, keeping the hose above the level of the vice.
– Using a 19 mm fl at spanner, unscrew the hose from the pump body, while holding the
coiled hose.
– Carefully clean the thread of the pump body to remove any residual sealing materials.
– Restore the gasket (tefl on tape) on the (male) thread of the new hose.
– Connect the new hose, tightening thoroughly the relevant nut (torque ratio: 80 Nm
(59 lbf.ft).
– Eliminate air in the hose as follows: unlock the pedal from the latch.
Depress the ball of the female quick coupler fi tted to the end of the hose and pump
slowly several times, until the oil fl ows. Check the oil level and top up as point 5.1.

6. FAULT DIAGNOSIS

Symptom: foot pump builds up pressure, but the ram of the connected head doesn't
advance.
Remedy: make sure that quick coupler between head and fl exible hose is properly
locked.
Symptom: each action of the pedal makes the ram, of the connected head, move,
but it retracts immediately after.
Remedy: eliminate air bubbles and residuals inside the hydraulic circuit as descri-
bed in point 5.2.
Symptom: dies or blades, of the connected head, do not close completely, and
therefore compression or the cutting operation is not possible.
Remedy: check oil level and top up if necessary as described at point 5.1 .
Symptom: the maximum pressure relief valve operates before the dies or the blades
carry have fully completed the operation.
Remedy: check the correct setting of the valve with the special gauge MPC1.

7. RETURN TO Cembre FOR OVERHAUL

In the case of a breakdown contact our Area Agent who will advise you on the problem and
give you the necessary instructions on how to dispatch the pump to our nearest service
Centre; if possible, attach a copy of the Test Certifi cate supplied by Cembre together
with the pump or, if no other references are available, indicate the approximate purchase
date and the tool serial number.
(Ref. to Fig. 8)
7
680 mm (26.7 in.)
FIG. 1 DIMENSIONS - DIMENSIONS - ABMASSE - DIMENSIONES - DIMENSIONI
FIG. 2 SELF-LOCK QUICK COUPLER - RACCORD RAPIDE PUSH-PULL
SCHNELLKUPPLUNG - ACOPLAMIENTO RAPIDO AUTOMÁTICO
INNESTO RAPIDO A BLOCCAGGIO AUTOMATICO
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