Scopy Of Supply; Use; Filtration; Pressure Reducer - CPED Dual Protect HWS 3/4 Instructions De Montage Et D'utilisation

EN

1. Scopy of Supply

Dual Protect consists of:
1. top section in brass incl. pressure reducer
2. connection screw joints and seals
3. bottom part in plastics, except Art.-Nr. 810560
(bottom part in brass)
4. filterelement in stainless steel
5. rinsevalve
Pressure reducer consisting of:
6. Locking screw
7. Rotary knob
8. Display for back pressure setting value
9. Spring cap
10. Slide ring
11. Pressure reducer element
12. ¼" Plug for connecting of an optional
Manometer.
filter
Accessoire:
4
Replacement filter element

2. Use

2.1 Filtration

The Dual Protect is intended for the filtration of
drinking and service water. It protects the water
pipes and the connected water-bearing system
components from functional defects and corrosion
damage by foreign particles such as rust partic-
les, shavings, sand, hemp, etc. The filter cannot
be used with chemically treated circulation water,
process water and cooling water for flow cooling.
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1
12
2
3
5
bottom part in
plastics
A coarse dirt separator must be installed upstream for
waters with coarse dirt particles.
The filters are not suitable for oils, fats, solvents, soaps
and other lubricating media. Neither are they suitab-
le for the separation of water-soluble substances.

2.2 Pressure reducer

The integrated pressure reducer installed downstream
from the filter serves to reduce pressure and regulate
a desired back pressure, predominantly in the dome-
stic water supply plant. It keeps the regulated back
pressure almost constant, even when the prepressure
fluctuates between, for example, 16 bar and the set
back pressure, e.g. 3 bar. A uniform, not too high
pressure preserves fittings and devices in the entire
domestic water installation, helps to save up to 50 %
of water and minimises noise evolution. We recom-
mend the installation of a pressure reducer from 4
bar pre-pressure.

3. Function

3.1 Filtration
The raw water flows through the raw water inlet
into the filter and then from the outside to the inside
through the filter element to the pure water outlet. The
foreign particles larger than the filter rating are re-
tained on the outside of the filter fabric. Clean water
enters into the pipeline system.
If as a result of the increasing contamination of the
filter fabric the water pressure decreases perceptibly,
the filter element must be replaced. BUT AFTER 6
MONTHS AT THE LATEST!
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7
3.2 Pressure reducer
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The pressure reducer works according to the principle
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of the relieved single-seat valve. It is controlled star-
10 ting from the back pressure via a large-dimensioned
membrane and a pressure spring, the tension and
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thus the back pressure of which can be changed with
the rotary knob (7). The display (8) shows the respec-
tive back pressure setting value.

4. Installation conditions

Caution: The plant must be set up according to the in-
stallation and operating instructions of the AVB Water
V, Sec. 12.2. by the water supply company or an ins-
tallation company entered into the installer directory
of a water supply company.
Observe all applicable installation regulations,
general guidelines and technical specifications.
Install the filter in the cold water pipes upstream of