caprari D Serie Instrucciones De Servicio página 17

9 TROUBLESHOOTING
1. The electric pump fails to
start.
2. The overload relay
or internal thermic-
amperometric protection
(single-phase version
only) has activated
during operation.
3. The electric pump fails to
stop automatically.
4. The electric pump
rate.
5. Although it operates, the
fails to deliver water.
6. The electric pump is
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1.1. The selector switch is set to the OFF position.
1.2. The motor is not powered.
switch, internal thermic-amperometric
protection, etc.) are not enabling operation.
2.1. All motor phases are not being fully powered
2.2. Power draw is unbalanced amongst the
2.3. The motor turns in the wrong direction
2.4. Wrong overload relay setting.
2.5. The power supply voltage rating fails to
correspond with that of the electric pump.
2.6. The electric pump fails to turn freely since
there are points that rub.
dense.
2.8. High temperature in the electric panel.
2.10. Damaged motor windings owing to the
presence of liquid.
switch, etc.) fail to enable the pump to stop.
4.1. Air enters through the suction mouth.
4.2. The motor turns in the wrong direction
4.3. Worn electric pump.
4.4. Electric pump partially clogged.
4.5. Delivery duct or valve partially clogged.
4.6. Sluice valve partially closed.
hydraulics.
5.3. Delivery cock or valve clogged.
5.4. Sluice valve closed.
6.1. Plant installed incorrectly.
D - M / DS - MS
1.1. Turn to the ON position.
1.2. Check that the electrical equipment is in a good
condition.
Check whether the equipment is receiving
power.
1.3. Wait until the correct operative conditions have
automatic devices.
2.1. Check that the electrical equipment is in a good
condition.
Check the power supply voltage rating.
2.2. Check the unbalance as described in the
"Electrical connections and information"
chapter.
If necessary, send the electric pump to an
authorized after- sales service center.
2.3. Invert two of the three phases.
2.4. Compare the setting amperage value with the
one on the electric pump data plate.
2.5. Change the electric pump or change the power
supply.
2.6. Check the hydraulics according to the
procedure described in the "Maintenance"
paragraph.
Immerse the electric pump in lukewarm water if
it is blocked by ice.
If necessary, send the electric pump to an
authorized after- sales service center.
2.7. Check whether the right electric pump has
been chosen.
2.8. Check that the relay is the compensated
ambient temperature type.
Protect the electric control panel from the sun
and heat.
2.9. Remove the incrustations from the cooling
surfaces of the motor.
Check whether the right electric pump has
been chosen since:
- the liquid may be at a persistently low level
of series D...R).
2.10. Check according to the procedure described
in the "Maintenance" chapter.
If necessary, send the electric pump to an
authorized after- sales service center.
3.1. Check whether the right electric pump has
been selected.
Also consult 4.3. - 4.5. - 4.6.
3.2. See 1.3.
4.1. Increase the level of liquid around the suction
mouth.
4.2. Invert two of the three phases.
4.3. Inspect the electric pump hydraulics
according to the procedure described in the
"Maintenance" paragraph.
only).
Also consult 4.3.
demount it if necessary.
4.6. Open the sluice valve.
5.1. See 4.1.
5.2. See 4.3.
5.3. See 4.5.
5.4. Open the sluice valve.
6.1. See 4.1.
6.2. See 4.3.
6.3. Check whether the right electric pump has
been chosen.
GB
17