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and fix with anchor bolts (installation plan see fig. 3).
Foresee an insulating material under the concrete block (cork or rein-
forced rubber) to avoid any noise and vibration transmission into the
installation.
Before final tightening of anchor bolts, ensure that the pump axis is
vertical : use shims if necessary.
Bear in mind that the altitude of the installation
CAUTION !
place and the water temperature may reduce the
suction possibilities of the pump.
Altitude
Loss of head
0 m
0 mCL
500 m
0,60 mCL
1000 m
1,15 mCL
Above 80° C, plan to install the pump under pres-
CAUTION !
sure.
5.2 Hydraulic connections
The installation has to bear the pressure reached when the
pump runs at maximum frequency and zero flow rate.
Pump with oval flange pump casing : with threaded screw-on tubes
directly on the tapped oval counterflanges delivered with the pump.
Pump with round flange pump casing : with weld-on or screw-on tube
in the counterflanges (counterflanges available as accessories).
Pump casing with rapid hose coupling : with a bracket, to install with
an end to fix on the pipe (bracket and threaded end available as
accessories).
The diameter of the pipe must never be smaller than the one of the
counterflange.
The direction of the fluid flow is indicated on the identification label
of the pump.
Limit the length of the suction pipe and avoid all features that cause
losses of head (bends, valves, tapers).
Connections have to be correctly sealed : no air entrance is allowed
on the suction pipe which is showing a mounting declivity of at least
2% (fig. 1).
Use supports or collars (fig. 1 & 2 - item 7) so that the pump does not
bear the weight of the pipes.
When the pump is under pressure, it is recommen-
CAUTION !
ded to connect the non-return valve to the pump
discharge to protect it against hammer blow effects.
Note : To pump water with a large content of air or hot water, we
recommend to install the by-pass kit (fig. 1 - item BP). Mount the pres-
sure sensor on the discharge pipe (fig. 7).
Temperature
Loss of head
20 °C
0,20 mCL
30 °C
0,40 mCL
40 °C
0,70 mCL
50 °C
1,20 mCL
60 °C
1,90 mCL
70 °C
3,10 mCL
80 °C
4,70 mCL
90 °C
7,10 mCL
100 °C
10,30 mCL
110 °C
14,70 mCL
120 °C
20,50 mCL
5.3 Electric connections
The electric connections and inspections have to be carried
out by a qualified electrician and have to comply with the
relevant local standards.
The electric characteristics (frequency, voltage, nominal current) of the
motor-variator are mentioned on the name plate. Check that the motor-
variator complies with the mains supply used.
The electric protection of the motors is integrated into the variator.
The parameters take into account the characteristics of the pump
and must ensure its protection and the one of the motor.
In case of impedance between earth and neutral point, install a pro-
tection before motor-variator.
Provide a fuse disconnecting switch (type GF) to protect the mains
installation (fig. 1 & 2 - item 11).
If you have to install a differential circuit-breaker for users pro-
tection, it must have a delay effect. Adjust it according to the
current mentioned on the variator label.
Use power cables conforming with standards.
DO NOT FORGET TO CONNECT TO EARTH.
The electric connection of the variator (fig. 4) according to its ope-
rating modes (see chapter 6 for starting) has to comply with the
schemes of the following table :
CAUTION !
A connection error would damage the variator.
The power cable must never touch the pipe or the pump ;
make sure that it is sheltered from any humidity.
You can change the orientation of the motor-variator by quarter turn
when removing the fixing screws of the motor and reorientating the
motor to the wished position.
- Place the screws back.
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