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Installer Manual Fleck 3900 - NXT - Installation
5.3.
Installation environment
5.3.1. General
•
Use only brine salts designed for water softening. Do not use ice melt, block, or rock salts;
•
keep the media tank in an upright position. Do not turn on its side, upside down, or drop it.
Turning the tank upside down may cause media to enter the valve or plug the upper screen;
•
follow state and local codes for water testing. Do not use water that is micro-biologically unsafe
or of unknown quality;
•
when filling the media tank, first place the valve in the backwash position, then partly open the
valve. Fill the tank slowly to prevent media from exiting the tank;
•
when installing the water connection (bypass or manifold), first connect to the plumbing system.
Allow heated parts to cool and cemented parts to set before installing any plastic parts. Do not
get primer or solvent on O-rings, nuts, or the valve.
5.3.2. Water
•
Water temperature must not exceed 43°C;
•
a minimum of 1.8 bar of water pressure is required for the regeneration valve to operate
effectively.
Mandatory
Do not exceed a maximum of 8.6 bar inlet pressure. In such cases, it is necessary to install
a pressure regulator upstream the system.
5.3.3. Electrical
There are no user-serviceable parts in the AC transformer, motor, or controller. In the event of a
failure, these should be replaced.
•
All electrical connections must be completed according to local codes;
•
use only the power AC transformer that is supplied;
Mandatory
The use of any other power transformer than the one supplied void the warranty of all
electronic parts of the valve.
•
the power outlet must be grounded;
•
to disconnect power, unplug the AC transformer from its power source;
•
an uninterrupted current supply is required. Please make sure that the voltage supply is
compatible with the unit before installation;
•
make sure the controller power source is plugged in;
•
if the electrical cable is damaged, it is imperative that it is replaced by a qualified personnel.
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Ref. MKT-IM-015 / B - 08.06.2018
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