Installation Conditions; Installation Site And Environment; Feed Water; Installation - BWT BEWADES blue 0.5 Einbau- Und Bedienungsanleitung

EN
5

Installation conditions

5.1

Installation site and environment

The installation site must be protected against
frost and kept free of chemicals, paint, solvents
and fumes. Neither the ambient temperature nor
the radiation temperature may exceed 40 °C in the
immediate vicinity.
There must be a clearance above the unit to facili-
tate lamp replacement.
The emission of interference (voltage peaks, high-
frequency electromagnetic fields, interference vol-
tages, voltage fluctuations, etc.) by the surrounding
electrical systems may not exceed the maximum
values specified in EN 61000-6-4.
5.2

Feed water

The water to be fed into the unit must always meet
the specifications given in chapter 12, Technical
specifications (see UV transmittance values). The
hydraulic conditions must be such that a vacuum
can never form in the UV unit.
Avoid pressure surges and fluctuating loads (e.g.
from pumps starting, pressure booster pulsation,
quickly closing valves, etc.).
Suitable installations for avoiding pressure surges
or fluctuating loads (e.g. expansion vessels, com-
pressed air chambers, slowly closing valves, etc.)
must be installed externally.
10
5.3

Installation

Use corrosion-resistant pipe materials for installa-
tion. Take corrosion-causing chemical properties
into consideration when different pipe materials are
combined (mixed installation).
A protective filter must always be installed upstream
from the unit to protect it from foreign particles.
In certain circumstances, the water must be pre-
treated. Depending on the operating conditions and
water quality, the water may be partially softened to
prevent deposits on the lamp casing tubes.
WARNING!
Dangerously hot water!
Danger of scalding!
► Insufficient water withdrawal
► Open the tap and discard a small
amount of water before use.
NOTE
► On site a flushing valve should be
installed after the Bewades blue, which
transfers the water out of the irridation
chamber to the drain when the water
temperature exceeds the operation
temperature (detection via temperature
switch).