DAB KP 60/6 T [31/112] Troubleshooting faul checks possible cause remedy

DAB EUROINOX 40/30 M [31/112] Troubleshooting faul checks possible cause remedy
ENGLISH
21
13. TROUBLESHOOTING
FAUL CHECKS (possible cause) REMEDY
1. The motor does not
start and makes no
noise.
A. Check the electric connections.
B. Check that the motor is live.
C. Check the protection fuses.
C. If they are burnt-out, change them.
N.B. If the fault is repeated immediately this
means that the motor is short circuiting.
2. The motor does not
start but makes noise.
A. Ensure that the mains voltage is the same
as the value on the plate.
B. Ensure that the connections have been
made correctly.
C. Check that all the phases are present on
the terminal board. (3~)
D. Look for possible blockages in the pump
or motor.
E. Check the condition of the capacitor.
B. Correct any errors.
C. If not, restore the missing phase.
D. Remove the blockage.
E. Replace the capacitor.
3. The motor turns with
difficulty.
A. Check the voltage which may be
insufficient.
B. Check whether any moving parts are
scraping against fixed parts.
B. Eliminate the cause of the scraping.
4. The pump does not
deliver.
A. The pump has not been primed correctly.
B. On three-phase motors, check that the
direction of rotation is correct.
C. The diameter of the intake pipe is
insufficient.
D. Blocked foot valve.
B. If necessary, invert the connection of two
supply wires
C. Replace the pipe with one with a larger
diameter.
D. Clean the foot valve.
5. The pump does not
prime.
A. The intake pipe or the foot valve is taking
in air.
B. The downward slope of the intake pipe
favours the formation of air pockets.
A. Eliminate the phenomenon and prime
again.
B. Correct the inclination of the intake pipe.
6. The pump supplies
insufficient flow.
A. Blocked foot valve.
B. The impeller is worn or blocked.
C. The diameter of the intake pipe is
insufficient.
D. On three-phase motors, check that the
direction of rotation is correct.
A. Clean the foot valve.
B. Remove the obstructions or replace the
worn parts.
C. Replace the pipe with one with a larger
diameter.
D. If necessary, invert the connection of two
supply wires.
7. The pump vibrates
and operates noisily.
A. Check that the pump and the pipes are
firmly anchored.
B. There is cavitation in the pump, that is
the demand for water is higher than it is
able to pump.
C. The pump is running above its plate
characteristics.
A. Fix the loose parts more carefully.
B. Reduce the intake height or check for
load losses.
C. It may be useful to limit the flow at
delivery.

Содержание

Скачать