Commissioning Of The Main Diesel Pump; Commissioning Of The Jockey Pump; Filling Of The Installation; Automatic Running Test - Wilo SiFire Easy Betriebsanleitung

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• Leakages on the mechanical seal,
• Vibrations, noise and excess temperatures could
occur due to misalignment of motor/pump cou-
pling.

8.4.2 Commissioning of the main diesel pump

• Make sure that any hydraulic, mechanical and
electrical connections indicated in this manual are
done correctly;
• Make sure that the valves on the suction and the
discharge side of the pump are open.
• Make sure the pump is primed and completely
filled with water and that air is drained by using
the tap on the pump housing.
• Check if the supply voltage is in accordance with
the data indicated on the rating plate and if it is
present.
• Make sure the fuel is compatible with engine
functioning, that the fuel tank is completely filled
with fuel (the fuel level inside the tank can be seen
via the pipe gauge near to the tank).
• Make sure that connections to the pipes are done
correctly without any connection between the
tank and the engine
• Make sure the electric float cable of the tank is
correctly connected to the electrical switchgear of
the diesel pump.
• Check the oil and coolant level of the engine.
• If engines are cooled by water from a cooler or
heat exchanger, check the specific procedures
specified in the instruction manual of the engine.
• In order to fill-up fluids use oil and coolant advised
by indications given in the instruction manuals of
diesel engines in annex to this instruction manual.
Follow the commissioning procedures indicated in
the chapter of the diesel pump switchgear.
CAUTION! Risk of product damage!
In order to avoid overheating which can damage
the main pumps, always check that the water
flow through the recirculation circuit is fitting
with requirements of pump's technical data
sheet. If there are problems in the recirculation
circuit or if the minimum flow level used to test
the start and the running of the pumps is not
guaranteed, open other circuits (for example the
flow meter, the valve for testing the tightness
of the gate valve, the drain valve, etc).
WARNING!
THE ACCELERATOR ENGINE LEVER IS LOCKED.
THEREFORE THE ENGINE ALWAYS STARTS AT
MAXIMUM SPEED.
Allow the pump to run for 20 minutes to check if
the motor speed is compatible with the indica-
tion on the unit's rating plate.
CAUTION! Risk of product damage!
Make sure that none of the following situations
is present. Otherwise immediately stop the
pump and remove malfunctioning causes before
starting it again (also refer to the chapter faults,
causes and remedies):
50
• Rotating parts are in contact with fixed parts,
• Unusual noises and vibrations,
• Loosen bolts,
• High temperature on the motor housing,
• Exhaust gas in the pump room
• Leak on the mechanical seal
• Vibrations, noise and excess temperatures could
occur due to misalignment of motor/pump cou-
pling.

8.4.3 Commissioning of the jockey pump

Manual Start
Follow the commissioning instructionsindicated in
the chapter of the jockey pump switchgear.
If the direction of rotation is not correct, turn off
the electrical supply of the box and swap two of
the three phases in the switchgear supply line. Do
not invert with the yellow-green earth connection
wire.
CAUTION! Risk of malfunction!
Make adjustments for the jockey pump which
maintains the pressure on the installation, for
example insert a diaphragm valve to ensure that
even if only one sprinkler is open, the jockey
pump does not compensate pressure loss.
For adjustments of jockey pumps, see the curves
of different pump types indicated in the cata-
logue.
If there is trouble regarding the start of the pump
refer to the chapter faults, causes and remedies of
the jockey pump box and the pump's instruction
manuals.

8.4.4 Filling of the installation

If the unit is not filled, use the jockey pump after
checking that the procedures described in the
previous chapter were done correctly.
In that phase, open one or more drain pipes in the
sprinkler circuit to expel air from the system.
Start the jockey pump. The system is slowly filling,
expelling air out of the system. Once the water
starts to flow from the drain pipes, close them and
wait until the predetermined pressure is reached
and the jockey pump stops. If the pump does not
stop, check if there are any leaks and check the
calibration of the pressure switch again which
controls the pump.
Once the unit has reached the set pressure, which
must be higher than the automatic main pump
start-up pressure, wait until the pressure remains
stable before switching the system to automatic
mode.

8.4.5 Automatic running test

Main electric pump
Before testing, make sure that the return circuit in
the tank is closed and the main circuit pressure is
sufficient to avoid accidental starting of the
pump.
Start the unit automatically by using one pressure
switch at a time to check the correct operation of
both switches. Close the valve (pos. 2 Fig. 10) and
WILO SE 01/2018