Bencke EWT 80-40/-41 Bedienungsanleitung Seite 46

Set-up/Installation
3.5.3
Connecting the Electric Heat Exchanger to the Water Cycle of a Filter System
Install the electric heat exchanger in the pressure line (to the basin) after pump and
filter.
The EWT 80-40/-41 is integrated into the water cycle via interior threads or tube
connections with tube clips.
The EWT 80-70/-71 EWT-T/-81 is integrated into the water cycle with PVC
glued/screwed connections.
The electric heat exchanger can be damaged.
When the heat exchanger is connected to the water cycle, please take care that
metal particles do not enter the electric heat exchanger.
take care
The electric heat exchanger might be damaged by chemicals.
Disinfecting devices are always to be installed in the flow direction after the electric
heat exchanger. The minimum distance must be 1 m and the order: first water
take care
hardness control, than chlorine vaccination is to be observed. If chemicals (e. g.
chlorine gas) are used, gases must not enter the electric heat exchanger during
filter standstill times.
3.5.4 General Installation Instructions for Flow switch
(without EWT 80-81)
At first clean the piping system where the flow switch
should be installed and remove any magnetic particles
such as weld spatters.
Straight pipe upstream and downstream of the flow
switch must be at least 5 x pipe diameter.
The flow switch must only be installed in a horizontal
pipe.
Contact the manufacturer for deviating positions.
Install the switch only vertically, max. deviation is 45° (fig. 1).
There is an arrow on the flow switch. Make absolutely
sure that this arrow is parallel with the pipe axis and
points into flow direction (fig. 2).
Make sure that there are no magnetic fields close to the
flow switch. Such fields can affect the proper function of
the instrument (fig. 2).
Screw on the union nut
mum torque of 8 Nm.
46
3 / " made of plastic with a maxi-
4
(fig. 1)
(fig. 2)