REMS Multi-Push S Betriebsanleitung Seite 26

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fl ow velocity in every pipe section of 0.5 m/s. A certain minimum number of tap
fi ttings must be opened for this. If the minimum volume fl ow is not reached with
full fi lling of the distribution pipe in a section of the pipe system to be fl ushed, a
storage tank and a pump must be used for fl ushing." "The system must be fl ushed
section by section depending on the size of the installation and the lay of the
pipes. No fl ushing section may exceed a pipe section length of 100 m."
Greatest rated width of the pipe in the fl ushed
section, DN
Greatest rated width of the pipe in the fl ushed
section, in inches
Minimum volume fl ow with fully fi lled pipe
section, in l/min
Minimum number of DN 15 (½") tapping
points to be opened fully or a corresponding
cross-sectional area
Table 2: Recommended minimum fl ow and minimum number of tapping points
depending on the greatest rated diameter of the pipe in the fl ushed section
which must be opened for the fl ushing process (for a minimum fl ow velocity of
0.5 m/s) (EN 806-4:2010, lines in italics added, limiting to DN 50). Two or more
REMS Multi-Push can be connected in parallel to fl ush greater rated widths.
The manual actuation of the setting fi ttings for the supply of intermittent
compressed air described in EN 806-4:2010 and in the information leafl et
"Flushing, Disinfection and Commissioning of Drinking Water Installations"
(August 2014) of the German Central Association for Sanitary, Heating and Air
Conditioning (ZVSHK) takes place automatically in REMS Multi-Push. The
compressed air is fed with an excess pressure of 0.5 bar above the measured
water pressure. The compressed air supply lasts 5 s, the stagnation phase
(without compressed air) lasts 2 s.
REMS Multi-Push displays the achieved fl ow velocity and the achieved volume
fl ow on the screen among other things.
Program sequence ↑ ↓ (8):
1. Flush \ Enter
2. Flush EN 806-4 \ Enter
3. Intermittent compressed air \ Enter
4. Check default max. DN according to table 2 and change if necessary (11) \ ↓
5. Enter water volume of the fl ushing section VA H
(see Fig. 6)
6. Open the water supply. If the minimum fl ow velocity v H
minimum volume fl ow VS H
The fl ushing time (according to information leafl et T 84-2004 "Flushing,
Disinfection and Commissioning of Drinking Water Installations" of the
German Central Association for Sanitary, Heating and Air Conditioning)
depends on the pipe length and should not drop below 15 s per metre. The
fl ushing time must be at least 2 minutes per tapping point.
(If the defaults v H O and VS H
2
the cause, repeat the process)
7. Display screen: Water pressure (p H
fl ushing time (t H O), volume of used water (V H
2
\ Enter
8. Esc >> Start menu \ Memory Manager, data transfer >> 3.8
NOTICE NOTICE
In order to feed in compressed air, water pressure of ≥ 0.2 bar must be applied
and a water quantity of ≥ 2 l must have fl owed through the machine.
3.1.3 Program fl ush EN 806-4 with water-air mixture with constant compressed
air
The compressed air is fed continuously with an excess pressure of 0.5 bar
above the measured water pressure in this program. The compressed air pulses
in the program 3.1.2 fl ushing with water/air mixture with intermittent compressed
air" are omitted here. Although these considerably improve the cleaning effect,
they subject the pipes to greater stress. If there are any reservations about
the strength of the pipes to be fl ushed, this program at least achieves an
improvement of the cleaning effect in comparison with program 3.1.1 fl ushing
with water (without air supply) by a jolt-free turbulence due to the constantly
fed compressed air.
REMS Multi-Push displays the used water volume on the screen among other
things.
Program sequence ↑ ↓ (8):
1. Flush \ Enter
2. Flush EN 806-4 \ Enter
3. Continuous air fl ow \ Enter
4. Check default max. DN according to table 2 and change if necessary
(11) \ ↓
5. Enter water volume of the fl ushing section VA H
(see Fig. 6)
6. Open the water supply. To exit \ Enter, (\ Esc = cancel)
7. Display screen: Water pressure (p H
volume (V H O) \ Enter
2
8. Esc >> Start menu \ Memory Manager, data transfer >> 3.8
NOTICE NOTICE
In order to feed in compressed air, water pressure of ≥ 0.2 bar must be applied
and a water quantity of ≥ 2 l must have fl owed through the machine.
26
25 32 40
1" 1¼" 1½"
15 25 38
1 2 3
O (0-999 l) (11) \ Enter
2
O = 0,5 m/s, the
2
O and the fl ushing time are reached \ Enter
2
O are not reached: \ Esc = cancel, clarify
2
O), minimum fl ow velocity (v H
2
O), volume fl ow (VS H
2
O (0-999 l) (11) \ Enter
2
O), fl ushing time (t H O), used water
2 2
3.1.4 Program fl ush/desilt with the possibility to switch over the air supply
This program is suitable for fl ushing/desilting radiators and area heating systems.
The compressed air supply can be switched on with an excess pressure of 0.5
bar or switched off during the fl ushing process. The program starts fl ushing/
desilting without compressed air. The compressed air can be switched on or
off intermittently or the constant air supply switched on and off as required with
the arrow keys ↑ ↓ (8). The water pressure and the minimum fl ow velocity are
displayed on the screen (LCD) (Fig. 2 (6)) during fl ushing/desilting.
50
Program sequence ↑ ↓ (8):
2" 1. Flush \ Enter
2. Flush \ Enter
3. Open the water supply. Flushing/desilting starts without air supply
59
4. Switch the compressed air on and off as required with the arrow keys ↑ ↓
(8). The marking on the screen (LCD) (6) shows the currently selected air
4
supply.
5. To exit \ Enter, (\ Esc = cancel)
6. Display screen: Water pressure (p H
fl ushing time (t H
7. Esc >> Start menu \ Memory Manager, data transfer >> 3.8
NOTICE NOTICE
In order to be able to feed in compressed air, a water pressure of ≥ 0,2 bar must
be available and a water volume of ≥ 2 l must have fl owed through the machine.
Before fl ushing/desilting, it is essential to assess whether the radiator and area
heating system to be fl ushed will withstand the water pressure during fl ushing/
desilting.
It can last up to one minute before the selected compressed air supply starts
when switching the air supply on or over.
3.2 Program Ingredients / Disinfection of drinking water installations
CAUTION CAUTION
No drinking water may be be drawn off for consumers during disinfection
of drinking water installations!
The European standard EN 806-4:2010 prescribes the following for the
"Selection of disinfectants":
"Drinking water installations may be disinfected after fl ushing if this is prescribed
by a responsible person or authority."
"All chemicals that are used for the disinfection of drinking water installations
must meet the requirements for chemicals for water treatment which are spec-
ifi ed in European standards or, if European standards are not applicable, in
national standards."
"Disinfectants must be used and applied in agreement with the appropriate EC
directives and all local or national regulations."
"Transport, storage, handling and use of all these disinfectants can be dangerous,
therefore health and safety requirements must be strictly observed."
"The system must be fi lled with the disinfection solution with the initial concen-
tration and for the contact time defi ned by the disinfectant manufacturer. If the
O),
remaining concentration at the end of the contact time is below the manufac-
2
O)
turer's recommendation, the whole disinfection process may have to be repeated
2
until the remaining concentration after the corresponding contact time has been
reached. After successful disinfection, the system must be drained immediately
and fl ushed thoroughly with drinking water. Flushing must be continued according
to the instructions/recommendations of the disinfectant or until the disinfectant
can no longer be traced or is below the level permitted by national regulations.
Persons carrying out the disinfection must be adequately qualifi ed."
"After fl ushing a sample (samples) must be taken and subjected to a bacteri-
ological examination. If the bacteriological examination of the sample/samples
reveals that insuffi cient disinfection has been achieved, the installation must
be fl ushed and disinfected again, then further samples must be taken."
"A full record of the details of the entire procedure and the test results must be
compiled and submitted to the owner of the building."
Technical Rule – Worksheet DVGW W 557 (A) October 2012 of the German
Association of the Gas and Water Industry e.V. (DVGW).
The following must be observed for Germany
additives, that are used for the disinfection of drinking water installations must
meet the requirements for chemicals for water treatment which are defi ned in
European or German standards (DIN EN 806-4)." "Every installation disinfec-
tion stresses the materials and components of the drinking water installation
so that the drinking water installation can be damaged."
"If the chemical disinfection is carried out section by section, the line sections
to be treated must be shut off from the rest of the drinking water installation.
Opening the tapping points of the section of the installation to be disinfected
one after another ensures that the disinfectant gets into the whole section." "At
the end of the exposure time, a minimum concentration dependent on the initial
disinfectant concentration and exposure time necessary to assure disinfection
must be verifi able at all tapping points. This must be checked at least at every
tapping point of the individual lines farthest away from the dosing point."
"At the end of the disinfection of drinking water installations, the used disinfec-
tion solution must be cleared so that no damage to the environment is caused.
The oxidising effect of the disinfectant can be rendered ineffective by adding
reducers. The pH value must also be observed and corrected if necessary."
An application concentration for the dosing solution for hydrogen peroxide H
of 150 mg H O / l and an exposure time of 24 hours are recommended.
2 2
O), minimum fl ow velocity (v H
2
O), volume of used water (V H O) \ Enter
2 2
Germany: "All chemicals including the
eng
O),
2
O
2 2