caprari HV Serie Instrucciones De Servicio página 17

delivers at a decidedly
electric pump delivers
automatically stop.
SALES NETWORK and LIST OF ASSISTANCE CENTERS available in www.caprari.com
Caprari S.p.A.
5.1. Air intaken from the suction mouth.
5.2. The motor turns in the wrong direction.
5.3. The check valve is blocked in a partially closed
position.
5.4. Worn electric pump.
5.5. Partially closed sluice valve.
5.6. Pump operating in cavitation conditions.
6.1. Pump unprimed owing to insuf cient head.
6.2. Pump unprimed owing to an excessive ow
rate.
6.3. The check valve has blocked in the closed
position.
6.4. Closed sluice valve.
6.5. Excessively worn electric pump.
7.1. Plant installed incorrectly.
7.2. Water containing a high amount of gas.
7.3. Worn shaft and guide bearing.
7.4. Pump imperfectly xed to its base.
7.5. Worn shaft supports.
7.6. Pump operating in cavitation conditions.
7.7. Excessive stress transmitted from the pipes to
the pump casing.
8.1. Insuf cient ow rate.
8.2. The automatic monitoring devices (level gauge,
etc.) are not enabling the pump to stop.
9.1. The hydraulic seal is no longer ef cient.
9.2. The shaft vibrates since the supports are worn.
HV - HVS / HVU - HVUS / HF - HFU
5.1. Increase the level of the liquid in the suction
mouth.
5.2. Invert two of the three phases.
5.3. Demount the valve from the pipe and check.
5.4. Send the pump to an authorized after-sales
service center.
5.5. Open the sluice valve.
5.6. Compare the suction pressure with the
NPSH values in the speci c technical
documentation.
6.1. See 5.1.
6.2. Check that the right product has been
selected.
Reduce the ow rate by means of the sluice
valve of the delivery pipe.
6.3. See 5.3.
6.4. Adjust the sluice valve.
6.5. See 5.4.
7.1. See 5.1.
7.2. See 5.1.
7.3. See 5.4.
7.4. Check according to the speci cations in
paragraph 5.3. "Mechanical connections".
7.5. Send the unit to an authorized after-sales
service center.
7.6. See 5.6.
7.7. Connect the pump to the pipes by means of
compensating couplings.
8.1. Check that the right product has been
selected.
Also see 5.3. - 5.4. - 5.5.
8.2. See 1.3.
9.1. Replace the seal according to the procedure
in paragraph 9.2. "Maintenance".
9.2. Send the unit to an authorized after-sales
service center.
GB