Checking Operation Of The Set; Checking Operation Of The Electropump; Checking Operation Of The Compensating Electropump (Pilot Pump); Checking Operation Of The Diesel Motor Pump - DAB 1 KDN Instructions Pour L'installation Et La Maintenance

6.

CHECKING OPERATION OF THE SET

6.1.

CHECKING OPERATION OF THE ELECTROPUMP

a) Turn the main switch on the electropump panel to 1 (ON).
Check the direction of rotation of the electropump, starting it for a few moments with the START button and
check that, when viewed from the fan side, the motor is turning in a clockwise direction. If not, exchange on the
terminal board any two leads of the electropump panel power supply.
b) Turn the selector on the electropump panel to AUT position.
c) Open a valve in the system (or the pump manual start valve, located near the pressure switches)
d) Check that the electropump starts.
e) Close the valve in the system (or the pump manual start valve, located near the pressure switches)
f) Put the system under pressure.
g) Stop the electropump with the STOP button on the electric panel.
To check failed starting of the electric pump see the electropump instructions manual.
ATTENTION: DURING OPERATION OF THE ELECTROPUMP:

Check for any water leaks in the system and stop the electropump if necessary.

The contact that indicates when the electropump is running closes and may activate any connected
alarms.
6.2.

CHECKING OPERATION OF THE COMPENSATING ELECTROPUMP (PILOT PUMP)

The compensating pump (or pilot pump) is an auxiliary pump which intervenes to draw small amounts of water.
It starts at a pressure higher than the starting pressure of the main pumps and stops when the pressure in the system is
restored.
It is not obligatory, but it is recommended in order to avoid needless starts of the main pumps in the case of leaks in the
system.
a) Turn the main switch on the electropump panel to 1 (ON).
To check the direction of rotation of the compensating electropump (or pilot pump), turn its selector to MAN for
a few moments and check that, when viewed from the fan side, the motor is turning in a clockwise direction.
If not, exchange on the terminal board any two leads of the power supply of the panel for the compensating
electropump (or pilot pump).
b) Turn the selector on the electropump panel to AUT position.
c) Turn on a hydrant in the system.
d) Check that the compensating electropump (or pilot pump) starts.
e) Turn off the hydrant.
f) Check that the electropump stops AUTOMATICALLY.
6.3.

CHECKING OPERATION OF THE DIESEL MOTOR PUMP

a) Turn the main switch on the Diesel motor pump panel to 1 (ON).
A 230V electric heater (located under the oil sump for air-cooled motors or in the head for water-cooled motors)
will bring the oil (or water) to a minimum temperature, so as to facilitate starting of the motor pump.
When the Diesel motor pump is started up on the site for the first time, it is necessary to
check the failed start alarm. (EN 12845 10.9.13.2 – UNI 10779)
See the Electric Panel instructions booklet for further information.
b) Turn the selector on the Diesel motor pump panel to AUT position.
c) Open a valve in the system (or the pump manual start valve – ref. 5)
d) Check that the motor pump starts.
e) Close the valve in the system (or the pump manual start valve – ref. 5).
f) Check that the number of rpm, shown on the display, corresponds to the value indicated on the data plate on the
accelerator control, if necessary regulate the accelerator according to the indication on the plate.
g) Put the system under pressure.
h) Stop the motor pump with the STOP button on the electric panel.
ATTENTION: DURING OPERATION OF THE DIESEL MOTOR PUMP:

Check for any water leaks in the system and stop the motor pump if necessary.

The contact that indicates when the motor pump is running closes and may activate any connected
alarms.
If it fails to start, the Diesel motor pump makes six attempts to start alternately on the two batteries
(EN 12845 point 10.9.7.2 – UNI 10779).
The condition of Diesel motor pump running is detected by the speed sensor on the motor.
If the motor pump does not start after six attempts, the electric panel activates:

a failed start warning light,

a failed start alarm contact.
ENGLISH
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