General Maintenance Requirements; Test Of The Automatic Start Of The Pump - Wilo SiFire Easy Série Notice De Montage Et De Mise En Service

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Open the general isolating switch on the
switchgear of the respective pump.
DANGER! Risk of fatal injury!
In the case of work with an open switchgear
door even after opening the main isolating
switch, input terminals from the supply line and
those of remote transmission of alarms could
still be powered.
DANGER! Risk of fatal injury!
For an intervention on the diesel engine, it is
advisable to disconnect the positive terminal of
the battery to prevent undesired start-ups.
DANGER! Risk of fatal injury!
Before changing the engine oil, make sure the
temperature is below 60 °C. For water-cooled
engines, remove the cap of the cooler or the
heat exchanger very slowly. The cooling sys-
tems are normally under pressure and violent
hot liquid leaks could occur. Check the correct
level of engine fluids (oil/water) and the correct
tightening of the water circuit and the circuit's
oil closure plugs.
NEVER ADD COOLANT TO AN OVERHEATING
ENGINE. LET IT COOL DOWN FIRST.
For diesel engines with a heat exchanger with
water / water, check that the valves of the cool-
ing circuit are locked in open position. Check
diesel and oil hoses and see if there is no fluid
leakage.
DANGER! Risk of fatal injury!
For oil / diesel engine water heating, emersion or
contact supplied with 230 V resistance can be
installed.
WARNING! Risk of fire and personal injury!
Connecting or disconnecting the battery can
generate sparks.
Never connect or disconnect the battery cables
when the motor is running.
WARNING! Risk of burn!
Hot diesel engine and exhaust pipe surfaces.
DANGER! Risk of explosion!
While charging the diesel pump batteries,
potentially explosive gas could be formed; avoid
flames and sparks.
Never leave flammable liquids or rags soaked
with these liquids around the pump units or
electrical devices.
DO NOT SMOKE OR USE FLAMES DURING THE
CHANGE OF ENGINE OIL OR FUEL PROVISION.
Units installed in accordance with these instruc-
tions will operate normally with a minimum main-
tenance intervention. Inspections and periodic
controls are planned and specified by the
EN 12845 standard in order to keep the fire extin-
guishing system and the pressure boosting sys-
tems efficient. Refer to the weekly, monthly,
quarterly, semiannual, annual, triennial and
52
10-years program of inspections and checks, pre-
scribed by the EN 12845 standard.
Maintenance must be performed by qualified per-
sonnel.

9.1 General maintenance requirements

• General inspection of the unit (including water
and power supplies) to check the apparent condi-
tions of all components;
• General cleaning;
• Tightness control of non-return valves;
• Check the operating configuration of the switch-
gear;
• Check the correct operation of alarm pilot lights
on the switchgear;
• Check the correct operation of the minimum tank/
well level alarm;
• Check the electrical connections to see if there are
any signs of insulation damages, burning, loosen-
ing of terminals;
• Check the electric motor's insulation resistance.
When it is cold, an engine without insulation dam-
ages must have a resistance of more than
1000 Mega ohm;
• Check the pre-inflation of membrane tanks;
• See also specific procedures indicated in the par-
ticular instructions manuals for the various com-
ponents of the pressure boosting system;
• Check if minimum service equipment supply is
available in stock which is required by the
EN 12845 standard for the quick restoration of the
fully working order of the system in case of failure.
• Check the correct functioning of the minimum
fuel level alarm;
• Check the correct functioning of the engine oil
heater resistor;
• Check the battery charge level and the efficiency
of the battery charger;
• Check the correct functioning of the stop solenoid
valve (Fig. 11);
• Check the pump cooling oil level and viscosity;
• Check the priming circuit (especially for unit
above the level of water charge).
During all inspections, the following points have
to be checked:
a) All different pressures of the manometer for
water and air of the buildings, pressures for main
pipes and pressure tanks;
b) All water levels in storage tanks, rivers, canals,
lakes (including pump priming tanks and under
pressure tanks);
c) The correct position of all the main gate valves.

9.2 Test of the automatic start of the pump

Tests on automatic pumps must include the fol-
lowing:
a) Control engine oil and fuel level;
b) Reduce the water pressure on the starting device,
simulating an automatic start request this way
(see chapter 8);
c) When the pump starts, the starting pressure must
be checked and recorded;
WILO SE 01/2018