Diesel Motor Ventilation; Diesel Motor Pump Connections; Checking Operation Of The Set; Checking Operation Of The Compensating Electropump (Pilot Pump) - DAB 1 KDN Instrucciones Para La Instalación Y El Mantenimiento

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For example: 12 metre pipelines with Diesel engine exhaust pipe of 45 mm = (45 mm X 12 m):8 = 68 mm. The pipeline, 12 metres
long, must therefore be at least 68 mm in diameter.
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In any case, reduce the number of bends used in the pipe and opt for the use of bends with a wide radius. If a pipe with bends
has to be used, special attention must be paid to the average bend radius, which must be 2.5 times the diameter of the pipe. The
resistance to the exhaust flow of the 90° pipe, higher than that of the straight pipe, affects the total length of the exhaust system
as shown in the attached table:
Pipe diameter in mm
Pipe length (L) in metres
2.3

DIESEL MOTOR VENTILATION

For optimum operation the heat given off by the motor and by the exhaust pipes must be discharged outside the pump room
and a sufficient flow of combustion air must be guaranteed.
In most cases the natural circulation caused by the difference in temperature between the inside and outside air is not enough. You
must therefore:
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guarantee the input of air through an opening suitably protected by a fixed grid,
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use a fan to extract air from the pump room.
In the case of water-cooled motors, the surface of the air inlet and outlet holes must have at least the same dimensions as the
surface of the radiator.
In the case of air-cooled motors, the surface of the holes must be able to drain an air flow rate of at least 50.000 litres/min. (technical
data for the largest air-cooled Diesel motor used by DAB PUMPS).
2.4 EXTERNAL TANK
If an external tank is supplied, it must be installed at least 1 metre away and on one of the two motor sides of the motor pump.
The tank must not be installed on a slope; the fixing means (screws, bolts, expansion plugs) must have adequate dimensions,
length and capacity.
3. BRANCHEMENT ÉLECTRIQUE
ATTENTION: RESPECT THE SAFETY REGULATIONS IN FORCE
The electrical installation must be carried out by a qualified, skilled electrician in compliance with the Safety Regulations in
force in the country where the product is installed.
Check the power supply voltage and frequency. Values differing from those on the motor plate could cause irremediable damage.
Connect the leads of the power supply cable to the terminal board on the control panel, giving priority to the earth lead.
For the wiring diagram of the control panel and the respective informative notes, see the enclosed documentation.

4. DIESEL MOTOR PUMP CONNECTIONS

Connect the two cables with the red terminal cover to the positive poles of the two batteries for starting the Diesel motor pump, using the
terminal clamps provided.
FROM THIS MOMENT THE DIESEL MOTOR PUMP MAY START AUTOMATICALLY IN THE EVENT OF A FALL IN PRESSURE
IN THE SYSTEM!!! KEEP THE SELECTOR ON THE MOTOR PUMP PANEL IN ZERO POSITION – 0.

5. CHECKING OPERATION OF THE SET

5.1 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..

5.2 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).
ENGLISH
40 50 65 80
0,5 0,7 0,9 1,2
44
100 125
1,7 2,2