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7.
PERIODIC MAINTENANCE
The whole fire-fighting system to standard EN 12845 – UNI 10779, including the set of fire-fighting pumps, must always be kept in
perfect working order. For this reason, regular maintenance is of particular importance.
According to standard EN 12845 point 20.1.1 – UNI 10779, the user must:
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carry out a programme of inspections and checks;
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arrange a testing, assistance and maintenance programme,
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document and record the activities, filing the documents in a special register kept in the building.
The user must ensure that the testing, assistance and maintenance programme is carried out under contract by the installer of the
system or by a company with the same qualifications.
7.1.
WEEKLY CHECK (to be carried out at intervals of no more than 7 days)
The weekly check of the fire-fighting set to standard EN 12845 – UNI 10779 contemplates checking and noting down the
following values:
pressure of pressure gauges,
water level in the tanks – water reserves,
correct position of the interception valves.
To test the automatic starting of the pumps, proceed as described below:
Check the levels of the fuel and lubricating oil in the Diesel motors.
Open the pump manual start valve (ref. 5).
Check that the pump starts and make a note of the starting pressure.
Close the manual start valve.
In the case of a Diesel motor, the motor will be let run for at least 5 minutes.
Stop the pump with the STOP button on the electric panel.
OPERATIONS ONLY FOR THE DIESEL MOTOR PUMP
Straight after stopping, the Diesel motor pump must be restarted immediately with the manual start test button
"OPERATE MANUAL START".
Stop the pump with the STOP button on the electric panel.
7.2.
MONTHLY CHECK
Check the level and density of the acid in all the cells or the starting batteries with a densimeter.
If the acid density is low, check the battery charger and, if necessary, change the batteries.
7.3.
QUARTERLY CHECK (at intervals of no more than 13 weeks – see EN 12845 point 20.3.2 – UNI 10779)
Check for any changes in the system, changed class of risk, etc.
Check sprinklers, pipes, pipe supports (see EN 12845 point 20.3.3.2 – UNI 10779).
Start the pumps and check the pressure and the flow rate.
Check the operation of any generators – generating sets.
Check the correct position of the interception valves.
Check the correct operation of the secondary electric power supply coming from Diesel generators.
7.4.
HALF-YEARLY CHECK (at intervals of no more than 6 months – see EN 12845 point 20.3.3 – UNI 10779)
Check the dry alarm valves (in the system).
Check the operation of the alarms in the control room and/or at the Fire Station.
7.5.
YEARLY CHECK (at intervals of no more than 12 months – see EN 12845 point 20.3.4 – UNI 10779)
Check the pressure and the flow rate of the pumps against the values given on the technical data plate.
Check the alarm for failed starting of the Diesel motor pump according to EN 12845 point 10.9.7.2 – UNI 10779.
(make the six attempts to start alternately on the two batteries).
After the six attempts, check that the following are activated on the electric panel:
- the failed start warning light,
- the failed start alarm contact.
Straight after testing, restart the motor immediately with the manual test button "OPERATE MANUAL START".
Check the operation of the float valves and the filters in the tanks.
7.6.
THREE-YEARLY CHECK
Check for corrosion outside and INSIDE the tanks, repairing the protection if necessary.
Check the interception and check valves, replace them if necessary.
7.7.
TEN-YEARLY CHECK
After no more than 10 years, clean all the tanks and check the internal structure.
ENGLISH
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