Commissioning Jockey Pump; Filling Of Installation - Wilo SiFire EN Série Notice De Montage Et De Mise En Service

• Check the oil and coolant level of the engine.
• If engines are cooled by water through a radiator
or heat exchanger, check specific operations
specified in the instruction manual of the engine.
To top up the level of fluids, use oil and coolant
advised by indications given in the instruction
manuals of diesel engines in annex to this instruc-
tion manual.
Follow the commissioning procedures with help of
the instruction manual of diesel pump box.
CAUTION! Risk of product damages!
To avoid overheating which could damage the
main pumps, always check that the water flow
through the recirculation circuit is fitting with
requirements of pump technical sheet. If there
are problems in recirculation circuit or if the
minimum flow level used to test start and run-
ning of pumps is not guaranteed, open other cir-
cuits (for example, the flow meter, valve for
testing the tightness of gate valve, drain valve,
etc).
WARNING! Risk of false reaction of the opera-
tor!
The engine's accelerator lever is locked. For that
reason, the engine always starts at max speed!
Allow the pump to run for 20 minutes to check if
the speed motor is compatible with the indica-
tion on the group label.
CAUTION! Risk of product damages!
Make sure that none of the following points
exist. Otherwise, immediately stop the pump
and remove malfunctioning causes before start-
ing it again (also refer to chapter faults, causes
and solutions):
• Rotating parts in contact with fixed parts
• Unusual noises and vibrations
• Loose bolts
• High temperature on motor housing
• Exhaust gas in the pump room
• Leakage on mechanical seal
Vibrations, noise and excessive temperatures
could be due to misalignment of motor/pump
coupling.
Installation and operating instructions Wilo-SiFire System

8.4.3 Commissioning jockey pump

Manual Start
Follow commissioning instructions with help of
the manual of jockey pump box.
If the rotation direction is not correct, turn off the
electrical supply of the box and switch two out
three positions of phases in the control panel sup-
ply line. Do not invert with the yellow-green earth
connection wire.
CAUTION! Risk of malfunction!
For the jockey pump which maintains pressure
on the installation, make adjustments, for
example insert a diaphragm or a valve, to ensure
that even if just one sprinkler is opened, the
jockey pump does not compensate this.
For adjustments of jockey pumps, see the curves
of different models of pumps mentioned in the
catalogue.
If there are troubles for starting pumps, refer to
the chapter faults, causes and solutions of the
jockey pump box and pump instruction manuals.

8.4.4 Filling of installation

If the unit is not filled, use the jockey pump after
checking that the operations described in previ-
ous chapter have been correctly done.
In that phase, open one or more drain pipes on the
sprinkler circuit to bleed air from the system.
Start the jockey pump. The system is slowly filling,
expelling air out of the system. Once water starts
to flow from 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 no leaks and check again the
calibration of the pressure switch which controls
pump.
Once the unit has reached the set pressure, which
must be higher than the automatic main pump
start-up pressure, wait that the pressure remains
stable before turning the system on automatic
mode.
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