Commissioning
en
Installation and operating instructions Wilo-SiFire FIRST
27
with starting the pump, refer to the chapter Faults, causes and remedies in the
jockey pump user manual or related control equipment.
7.3.4
Filling the system
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If the system is not filled, use the jockey pump after checking that the procedures
described in the previous chapter have been performed correctly.
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At this stage, open one or more of the sprinkler circuit exhaust pipes to let air escape
from the system.
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Start the jockey pump. The system will fill slowly and the air will be expelled. As soon
as water starts to flow out of the exhaust pipes, close them and wait until the preset
pressure is reached and the jockey pump stops.
If the pump does not stop, check for leaks. The pump will only stop at zero flow. The
system reaches the maximum pressure of the jockey pump, which must be higher than
the automatic starting pressure of the main pump. Wait for the pressure to stabilise.
Then switch the system to automatic mode.
7.3.5
Test of automatic mode
Main electric pump
Before carrying out the test, make sure that the return circuit in the tank is closed and
that the pressure in the main circuit is sufficient to prevent accidental starting of the
pump.
Start the system using one pressure switch at a time in order to check the correct oper-
ation of both pressure switches. See Fig. 10: Close valve 2 and open valve 1 to carry out
the test. Close valve 1 and open valve 2 to end the test and restore the pressure in the
circuit. Then follow the instructions on the pump’s switchgear to check the correct
functioning of the automatic mode.
CAUTION
Material damage due to overheating!
To avoid overheating that could damage the main pumps, always check that the wa-
ter flow through the recirculation circuit meets the requirements of the pump data
sheet. In case of problems with the recirculation circuit, or if the minimum level used
to check the starting and operation of the pumps is not guaranteed, open other cir-
cuits (e.g. flow meter, leak test valve of the shut-off valve, drain valve, etc.).
DANGER
Danger due to non-activated fire-extinguishing system
Before moving away from the system and/or after a manual deactivation, remember
to return the system to automatic mode (see chapter on the switchgear). OTHER-
WISE THE FIRE ALARM SYSTEM IS NOT ACTIVATED.
CAUTION
Incorrect pressure level can result in a fault!
If the system pressure does not return to the starting level of the main pump pres-
sure switches, please refer to the chapter on the switchgear for the manual start of
the pump.
Automatic start test with float switch (pump with electric motor)
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Empty the priming tank (or simulate the effect) to start the electric pump via the
float switch signal.
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Then follow the instructions on the pump’s switchgear to check the correct opera-
tion of the pump.
