Xylem Aquontroller - Manual (Page 36)

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4 4 4 4 SELECTION GUIDE TO SELECTION GUIDE TO SELECTION GUIDE TO SELECTION GUIDE TO THE CORRECT INSTALLATION THE CORRECT INSTALLATION THE CORRECT INSTALLATION THE CORRECT INSTALLATION
4.1 H 4.1 H 4.1 H 4.1 Hydraulic connection ydraulic connection ydraulic connection ydraulic connection
For MMW model, install an expansion vessel of at least 8 liters to protect the product against water
hammer and to avoid continuous restart of pump in presence of small leaks in the system. For MMA
model, have to install an expansion vessel at least 20 liters. Vessel have to be pre-loaded with air at a
pressure of 0.8 x pressure value set in the inverter. The precharge is performed with zero pressure
system.
Recommendations:
o
Install AQUONTROLLER near the pump; if mounted directly on the pump check there are no
harmful vibrations.
o
For the MMW model, the pipes must be no less than the diameter of AQUONTROLLER
hydraulic.
o
Insert a cartridge filter to protect the hydraulic system and possible AQUONTROLLER (model
MMW) from solid parts in the liquid pumped.
o
For the MMW model, install valves with union upstream and downstream of the inverter so as
to facilitate the eventual isolation and / or removal from the system.
Typical system diagrams Typical system diagrams Typical system diagrams Typical system diagrams
Submersible pumps:
M
P
Shut off valve
Expansion vessel
Electric motor
Pump
Non return valve
Hydrauli filter
Pressure gauge
Pressure transmitter
Impedance coil
S
Float switch
Filter
Aquontroller
M MA
20lt
Filter
8lt
Aquontroller
M MW
M ax 20 mt
S
L max
L max
P M
P M
M ax 100 mt
S
mm2
L max
mt
1.5 20
2.5 50
4 100
Fig.5