caprari MEC-A Serie Instrucciones De Servicio página 23

6. The unit delivers a very
.
to deliver water.
8. The unit is noisy and
.
9. The unit fails to
automatically stop.
10. The hydraulic seal
on the shaft drips
excessively.
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MEC-A / MEC-MR / MEC-AG / MEC-MG / HM / HMU / BHR
6.1. Air enters through the suction port.
6.2. The electric motor turns in the wrong direction.
6.3. The check valve or foot valve has jammed in a
partially closed position.
6.4. Worn pump.
6.5. Partially closed sluice valve.
6.6. Pump operating at cavitation rate.
6.7. Strainer clogged by foreign bodies.
6.8. Rotation speed too low.
head.
7.3. The check valve or foot valve has jammed in a
closed position.
7.4. Closed sluice valve.
7.5. Pump excessively worn.
7.6. Transmission coupling worn owing to an
excessive number of hours service and/or too
many starts and/or bad alignment.
7.7. Strainer clogged by foreign bodies.
7.8. Rotation speed too low.
8.1. Incorrect plant installation.
8.2. Water containing a high amount of gas.
8.3. Worn shaft.
8.4. Incorrect plant installation or assembly of the
components.
8.5. Pump operating at cavitation rate.
8.6. Stress transmitted by the pipes to the pump
casing.
9.2. The automatic monitoring devices of the system
or motor fail to enable operation.
6.1. Increase the level of liquid at the suction port.
6.2. Reverse two of the three phases.
6.3. Disassemble the valve from the pipe and check.
6.4. Send the pump to an authorized After-Sales
Service center.
6.5. Open the sluice valve.
6.6. Compare the suction pressure with the
documentation.
6.7. Remove the obstruction.
6.8. Regulate the internal combustion engine.
Make sure that the pump - electric motor
combination has been correctly selected.
7.1. See 6.1.
7.2. Make sure that the right product has been
selected.
valve on the delivery pipe.
7.3. See 6.3.
7.4. Adjust the sluice valve.
7.5. See 6.4.
good condition and replace them if necessary
(consult paragraph 6.3 "Maintenance" for a
description of the procedure).
7.7 See 6.7.
7.8. See 6.8.
8.1. See 6.1.
8.2. See 6.1.
8.3. See 6.4.
paragraph 5.3 "Mechanical connections".
8.5. See 6.6.
8.6. Check the maximum stress values in the
"Flange stress" table in chapter 11 "Technical
data".
Connect the pump to the pipes by means of
compensation joints.
9.1. Make sure that the unit has been correctly
selected.
Also consult 6.3, 6.4, 6.5.
9.2. See 1.3.
10.1. Replace it according to the procedure
described in paragraph 6.3 "Maintenance".
Send the unit to an authorized After-Sales
Service center if necessary.
GB
23