DAB PUMPS 1-2-3 K 55/200 T Manual Del Usuario página 35

FAULTS
A PUMP IN THE SET STOPS AND
DOES NOT START AGAIN.
WATER HAMMER IN THE
SYSTEM.
ENGLISH
POSSIBLE CAUSES
1. Tripping of the thermal relay.
2. Excessive energy consumption with
consequent immediate tripping of the
thermal relay.
3. Motor protection fuses burnt out.
4. No current is reaching the coil of the
respective remote control switch.
5. Remote control switch coil interrupted.
6. The system pressure is not reaching the
respective control pressure switch.
7. Faulty control pressure switch.
1. Water hammer during operation of the
set.
2. Water hammer when turning off the
flow.
30
REMEDIES
1. Reset the relay, pressing the button
provided on the relay, after having
checked for correct calibration (see point
5.4. of the paragraph "Starting up").
2. The pump turns under excessive force,
due to dirt, lack of a phase, dry operation,
worn bearings etc... Eliminate the cause.
3. Change them.
4. Use an tester to check the electric circuit
as far as the coil itself and repair any
interruption found.
5. Change it.
6. Remove it and clean the connecting
sleeve.
7. Change it.
1. Check the non return valve of the hot
water distribution mains.
2. Install other aquaboxes or water hammer
deadening devices at the end of the pipe
where the phenomenon occurs.