Unit Below Water Level; Unit Below Water Level (Suction Operation); Function Control; Commissioning Of The Main Electric Pump - Wilo SiFire Easy Série Notice De Montage Et De Mise En Service

CAUTION! Risk of product damage!
Tighten all the supply terminals before the com-
missioning of the pressure boosting system!
If it is necessary to conduct tests during installa-
tion, make sure the pumps are properly filled with
water before switching them on.
Before filling the pump unit with water, check the
tightness of the components, which could be
loosened during transport and handling.
Do not let the pressure boosting system in auto-
matic mode before the fire fighting system is
completely assembled according to the standard;
the commissioning of an incomplete fire extin-
guishing system will voide the warranty.
PROCEDURE FOR COMMISSIONING
• During the pumping system automatic mode set-
ting, the maintenance program procedures and
the responsibility of operation in case of acciden-
tal starting must be defined.
• For models with diesel engine, check the correct
filling of batteries before operation.
• For inspection of batteries, follow the instructions
of the manufacturer.
• Keep the batteries away from flames and sparkles.
For safety reasons do not lean above the batteries
in operating state and during installation or
removal.
• Check the correct level of fuel in tanks of diesel
engines and, if necessary add some fuel when the
engines are cold.
• Do not spill fuel on motors, on rubber or plastic
materials of the system.
• Do not add fuel when the engines are warm.
• Before turning on the main pumps, check the cor-
rect motor-pump alignment. Respect the proce-
dures described in the specific manual delivered
with the pumps. The motor-pump alignment
operations must be performed by skilled persons.
• If the unit is provided with the pumps placed on a
separate base frame, each base frame must be
fixed to the ground paying special attention to the
alignment of the discharge manifolds.
• The installation must be performed by qualified
technicians.

8.2 Unit below water level

For the commissioning of a system installed under
water level take the following measures:
• Check if the air ventilation valve of each pump is
open;
• Close the valves on the discharge pumps;
• Slowly open the valves on the discharge side and
check if water is coming out from the air ventila-
tion circuits of each pump;
• Briefly start the pumps by using the manual mode;
• Make sure there is no air in the circuits and the
pumps;
• Repeat the operation until it is sure that all air is
eliminated from the pipe;
• Close the ventilation plug of the jockey pump;
• Completely open the valves on the suction and
the discharge side;
Installation and operating instructions Wilo-SiFire Easy
• Make sure there are no problems of water flow
(presence of dirt, solids, etc).

8.3 Unit below water level (suction operation)

For the commissioning of a system installed
beyond water level, take the following measures:
• Check if the ventilation valve of each pump is
open;
• Close the valves on the discharge pumps;
• Fill the main pumps through circuits from priming
tanks;
• Fill the jockey pump through the filler cap by fol-
lowing the instructions given in the instruction
manual.
• Briefly start pumps by using the manual mode;
• Make sure there is no air in the circuits and the
pumps;
• Repeat the operation until it is sure that all air is
eliminated from the pipe;
• Completely open the valves on the suction and
the discharge side.
• Make sure there are no problems of water flow
(presence of dirt, solids, etc).

8.4 Function control

8.4.1 Commissioning of the main electric pump

• Make sure that any hydraulic, mechanical and
electrical connections indicated in this manual are
done correctly;
• Make sure the valves at the suction and the dis-
charge side of the pump are open;
• Make sure the pump is primed and filled with
water;
• Make sure that the power supply is in accordance
with the data indicated on the rating plate and
that all three phases are connected correctly.
Follow the commissioning instructions indicated
in the chapter of the electric pump switchgear.
CAUTION! Risk of product damage!
In order to avoid overheating which can damage
the main pumps, always check that the water
flow through the recirculation circuit is fitting
with requirements of the instructions in the
technical manual of the pump. If there is trouble
regarding the recirculation circuit or if the mini-
mum level necessary for testing the start and
the running of the pump is not guaranteed, open
other circuits (for example the flow meter, the
valve for testing the tightness of the gate valve,
the drain valve, etc.)
CAUTION! Risk of product damage!
Make sure that none of the following situations
is present. Otherwise immediately stop the
pump and remove malfunctioning causes before
starting it again (also refer to the chapter faults,
causes and remedies):
• Rotating parts are in contact with fixed parts,
• Unusual noises and vibrations,
• Loosened bolts,
• High temperature on the motor housing,
• Differences in current at each phase,
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