9.1.2 System isolator
WARNING!
Warning against unchecked through-suction
If the line that is carrying the water to be treated is subject to
a vacuum pressure, then unchecked through-suction of the
ClO
2
solution can occur.
–
Fit a system isolator.
–
Fit a backpressure-free back pressure valve upstream of
the injection point, if a constant back pressure of 1.5 bar
is not ensured in any other way.
9.1.3 Point of injection, Bello Zon
®
CDL
P_PMA_BEZ_0078_SW
WARNING!
Danger of back pressure effects
If incorrectly installed, the integrated non-return valve may
not close.
–
Install the ClO
2
connector of the point of injection so it
points vertically downwards
WARNING!
Warning of toxic ClO
2
If the metering line is made from inappropriate material, e.g.
PE, it may leak.
–
Always use PTFE tube, e.g. 6x4 mm, order no. 37426 or
equivalent.
WARNING!
Warning of too-low ClO
2
concentration
UV radiation, e.g. from fluorescent strip lights or sunshine, or
bright light can cause the ClO
2
in the metering line to decom‐
pose.
–
Protect the metering line against UV radiation and bright
light.
Installation
22