Automatic Test Of Running - Wilo SiFire EN Série Notice De Montage Et De Mise En Service

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8.4.5 Automatic test of running

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 automatically the group by using one pres-
sure switch at a time to check the correct opera-
tion of both switches. Close the valve pos.2 fig. 10
and open the valve pos. 1 of fig. 10 to complete
and restore the circuit pressure. Then follow pump
panel instructions to verify the correct function-
ing of automatism.
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).
CAUTION! Risk of malfunction!
Before leaving the installation and/or after a
manual stop, remember to return the system in
automatic mode (refer to the box manual).
Otherwise the fire extinguishing system is not
activated!
CAUTION! Risk of malfunction!
If the pressure in the system has not recovered
to the starting level of the main pump switches,
refer to the box manual to manually start the
pump.
Test of automatic start with float switch (elec-
tric pumps with suction lift)
• Empty the priming tank (or simulate the effect) to
start the electric pump through the float signal.
• Then follow pump box instructions to check the
correct functioning of automatism.
40
Pump with diesel engine
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.
Then follow pump box instructions to set only the
diesel pump in automatic mode.
Automatically start the group by using one pres-
sure switch at a time, to check the correct opera-
tion of both switches. Close the valve pos.1 of
fig. 10 and open the drain one pos. 2 of fig. 10 for
obtain the start-up of the pump.
Then follow pump panel instructions to verify the
correct functioning of diesel pump automatism.
Close the valve pos. 2 of fig. 10 and open the valve
pos. 1 of fig. 10 to complete the test and restore
the circuit pressure.
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).
Automatic start test with float switch (diesel
pump with suction lift)
• Empty the priming tank (or simulate the effect), to
start the electric pump through the float signal.
• Then follow pump panel instructions to verify the
correct functioning of automatism.
CAUTION! Risk of malfunction!
If the pressure in the system has not recovered
to the starting level of the main pump switches,
refer to the box manual to manually start the
pump.
WILO SE 12/2019