Table des Matières
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ENGLSIH
5.2 Hydraulic connections
The installation has to bear the pressure reached when the
pump runs at maximum frequency and zero flow rate.
TAPPED PORTS
Multi-HE 200 Multi-HE 400
Suction port
1"- (26-34) 1"
Delivery port
1 "- (26-34)
- Connection by flexible hose with reinforcement or rigid propeller.
- Connections has to correctly sealed.
- No air entrance is allowed on the suction pipe which is showing a
mounting declivity (2 %) (see fig. 1).
- With rigid pipe, avoid the pump to bear the weight of the pipes, use
supports, (see fig. 1).
- The diameter of the pipe must never be smaller than the suction/
delivery ports.
- Limit the length of the suction pipe and avoid all features that
cause losses of head (bends, valves, tapers).
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.
Multi-HE 800 Multi-HE1600
- (33-42) 1"
- (40-49)
2"- (50-60)
1/4
1/2
1"- (26-34)
1"
- (33-42) 1"
1/4
1/2
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.
(40-49)
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 protec-
tion before motor-variator.
Provide a fuse disconnecting switch (type GF) to protect the mains ins-
tallation (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. 3) according to its ope-
rating modes (see chapter 6 for starting) has to comply with the
schemes of the following table.
CAUTION !
The power cable must never touch the pipe or the pump ;
make sure that it is sheltered from any humidity.
19
A connection error would damage the variator.
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