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The multi-V pump is connected to an interchangeable blad-
der tank made of food-grade butyl rubber for complete assu-
rance of healthy water.
Protection
Single-phase Hydromini : thermal protection of motor incorporated
in winding; automatic reset. We recommend magneto protection
(not delivered)
Three-phase Hydromini : magneto-thermal incorporated in the pro-
tection box, manual reset.
Dry run protection : we recommend its protection by an adapted
device (float switch, pressure switch).
4.3 Operating principle
The pump in operation discharges water into the bladder, compres-
sing the air in the tank. When the max. pressure set is reached , the
pump stops.
The air presses on the bladder, driving water in the distribution pipe
when a tap is opened.
When enough water is drawn of for the minimum pressure to be rea-
ched, the pump starts to deliver water and refill the bladder.
The pressure switch (Fig. 1, item 6) automates the operation of the
booster; the pressures can be read on the pressure gauge.
The reserve of water in the bladder means that water can be drawn
without starting the pump.
5. INSTALLATION
5.1 Room
Ensure the premise doors allows free access to the booster pump. The
booster should be installed in a room that easy to reach, normally
ventiled and protected from frost.
5.2 Mounting (see FIG. 4)
Montage sur un sol bien lisse et horizontal.
Des plots anti-bruits et vibrations évitent toute transmission de bruit de
circulation d'eau. Il n'est donc pas nécessaire de prévoir de matériau
isolant au sol.
5.3 Hydraulic connections
Water supply
By threaded tubes screwed directely into the tapped oval counter-
flanges.
The booster can be supplied with water, from:
- a well : the max. suction height of the pump is 5m.
- a storage tank supplied from a town network, at level or under pres-
sure.
Depending on the water supply, it is essential to fit : a foot valve-strai-
ner in the case of a well or stream.
The diameter of the suction piping must never be less than that of the
pump. Limit the horizontal length of the suction piping and avoid all
causes of losses of head (necking, bends, etc.).
With rigid piping, use supports or collars to avoid having the pump
bear the weight of the piping (fig. 1, item 14). An arrow on the pump
body indicates the pump direction of flow of the fluid.
Distribution
Hydromini
Suction
MULTi-V 200
1"1/4 - (33-42)
MULTi-V 400
1"1/4 - (33-42)
5.3 Electrical connections
The electrical connections and checks must be done by a
qualified electrician in accordance with the standards in
force.
ND of ports (tapped)
Discharge
1" - (26-34)
1" - (26-34).
Power supply network (see Fig.3)
Single-phase : rremove the cover of the pressure and connect a 3-
connectors cable (2 phases + earth) to terminals 2 and 4 (Fig. 2).
Three-phase : remove the cover of the pressure and connect a 4-
connectors cable (3 phases + earth) to terminals L1,L2,L3.
Check the current set on the thermal relay, and compare it to what
is marked on the data plate on the pump. If necessary, readjust by
turning the thumbwheel.
Contrôler l'intensité réglée sur le disjoncteur en la comparant à la
plaque signalétique située sur la pompe. Au besoin, réajuster en tour-
nant la molette.
DO NOT FORGET TO CONNECT THE EARTHING LEAD (Green and yellow
conductor).
An electrical connection error would damage the motor.
The cord must never the piping or the the pump, and must be
kept away from all moisture.
6. STARTING-UP
Never run the module dry more than a few seconds.
6.1 Filling , degassing
Pump under pressure
- Close the discharge valve (Fig. 1, item 12).
- Unscrew and remove the pilling plug (Fig. 1, item 2).
- Unscrew the drain-priming plug (Fig. 1, item 3) 4 or 5 turns to inter-
connect the suction and discharge casings.
- Gradually open the discharge valve (Fig. 1, item 11) and proceed
to fill the pump completely via the filling port.
- Screw the filling plug back in only after water has flowed out and all
air has been eliminated.
Pump in suction (Fig. 1)
- Close the discharge valve (item 12).
- Open the suction valve (item 11).
- Unscrew and remove the filling plug (item 2).
- Unscrew the drain-priming plug (item 3) on the pump body 4 or 5
turns.
- Using a funnel inserted in the port, fill the pump and the suction
piping, slowly and completely.
- After water flows out and all air has been eliminated, filling is com-
plete.
- Screw the plugs back in.
6.2 Pressurization of tank
Check the tank pressure of tank and correct if necessary by pressuri-
zing via the tank valve (Fig.1, item 8).
The pressure must be 0.3 bar less than the pump starting pressure.
6.3 Pressure gauge
Cut the nipple of the pressure gauge (Fig. 1, item 5) to vent it.
6.4 Adjustments
Check of direction of rotation (three-phase motor only.
- Power up the motor and check that in fact it turns in the direction
indicared by the arrow placed on the pump housing.
If it turns the wrong way, interchange two wires on the motor termi-
nal block.
Adjustement of pressure contactor
The adjustment can only be made with the equipment pres-
surized.
6.4.1 Single-phase and three-phase models (see Fig. 1 and 2)
Principe : the adjustment is made by turning the nut (Fig. 2, item 1) to
adjust the high point (stopping of pump) and the nut (Fig. 2, item 2)
to adjust the low point (starting).
- Turn the nut (Fig. 2, item 1) clockwise; the value of the high point
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