REMS E-Push 2 - Page 19

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eng eng
Attention:
The user is solely responsible for transferred or newly entered
test criteria (test sequences, pressures and times) or defaults in the
individual programs and the conclusions from the tests. Especially, the
user must decide whether a prescribed stabilisation/wit time is ended
and must confi rm this by \Enter.
The respective national safety provisions, rules and regulations valid for
the application site must be considered and observ
ed.
Electronic memory
Th
e electronic memory of REMS Multi-Push holds 40 fi les (logs). A soon as a
program has been selected from the Start menu and the selected data have
been confi rmed with Enter, a new fi le no. is created automatically even if the
program is then aborted e.g. with Esc. If the 40th memory location is occupied,
the message “Last fi le no. available”. After completing this process, all fi les
should be copied to a USB stick via the USB port (Fig. 2 (33)). The oldest fi le
no. in the memory is then overwritten when further fi les are saved.
Screen display (must be released by Enter):
000425
19.08.2013 10:13
Files 40/40
Last fi le no.
available
Consecutive fi le no. 000425
Date 19.08.2013
Time 10:13 (creation of a new fi le no.)
Files 40/40 (a max. of 40 fi les are saved)
Last fi le no.
available
3.1 Programs fl ush EN 806-4 drinking water installations, program fl ush/desilt
radiators and area heating systems
1), 4)
The REMS Multi-Push can be used for performing the fl ushing processes “fl ush
with water”, “fl ush with water-air mixture with intermittent pressure” and “fl ush
with water-air mixture with constant compressed air”.
3.1.1 Program fl ush EN 806-4 with water (without air supply)
1), 4)
Specifi cations for fl ushing with water are defi ned in EN 806-4:2010, and for
Germany additionally in accordance with the Technical Rules Worksheet DVGW
W 557 (A) October 2012 of the DVGW German Gas and Water Association and
the information leafl et “Flushing, disinfection and commissioning of drinking water
installations” (August 2014) of the Central Association for Sanitary, Heating, Air
Conditioning (ZVSHK), Germany.
The drinking water used for fl ushing must be fi ltered and must be of perfect
drinking water quality. Filters must hold back particles ≥ 150 µm (use REMS
fi ne fi lter with fi lter cartridge 90 µm, Art. No. 115609).
The system must be
fl ushed section for section depending on the size of the installation and the
arrangement and lay of the pipes. Flushing must be start on the bottom fl oor
of the building and continue upwards in lines, within a line fl oor by fl oor, i.e.
from the nearest to the furthest line and fl oor. The minimum fl ow velocity when
fl ushing the installation must be 2 m/s and the water in the system must be
replaced at least 20 times during fl ushing.
Within the fl oor and single lines, at least as many tapping points as listed in the
following table as a recommended value for a fl ushing section will be fully
opened for at least 5 minutes fl oor by fl oor.
Greatest rated width of the pipe in the
fl ushed section, DN
25
32
40
50
Greatest rated width of the pipe in the fl ushed
section, in inches
1"
1¼"
1½"
2"
Minimum number of tapping points to be
opened DN 15 (½")
2
4
6
8
Table 1: Recommended value for the minimum number of tapping points to be
opened related to the greatest rated width of the distribution line” (single tapping
rate at least 10 l/20 s) (Information leafl et “Flushing, disinfection and commis-
sioning of drinking water installations” (August 2014) of the German Central
Association for Sanitary, Heating and Air Conditioning, lines in italics added,
limiting to DN 50). Two or more REMS Multi-Push can be connected in parallel
to fl ush greater rated widt
hs.
Pr
ogram sequence ↑ ↓ (8):
1. Flush \ Enter
2. Flush EN 806-4 \ Enter
3. without compressed air \ Enter
4.
Check default max. DN according to table 1 and change if necessary (11) \ ↓
5. Enter water volume of the fl ushing section VA H
2
O (0-999 l) \ Enter (see
Fig. 6)
6. Open the water supply. The values fl ash as long as the minimum fl ow
velocity v H
2
O = 2 m/s and the water change n H
2
O = 20 have not been
reached. On reaching the values \ Enter
(If the defaults v H
2
O and n H
2
O are not reached: \ Esc = cancel, clarify the
cause, repeat the process)
7. Display screen: Water pressure (p H
2
O), minimum fl ow velocity (v H
2
O),
fl ushing time (t H
2
O), water change (n H
2
O), volume of used water (V H
2
O)
\ Enter
8. Esc >> Start menu \ Memory Manager, data transfer >> 3.
8
During the program run, the REMS Multi-Push displays the achieved fl ow
velocity and the achieved water change on the screen among other things.
3.1.2 Program fl ush EN 806-4 with water-air mixture with intermittent compressed
air
The cleaning effect by fl ushing can be reinforced by adding compressed air.
Specifi cations for fl ushing with water are defi ned in EN 806-4:2010 and in the
information leafl et “Flushing, disinfection and commissioning of drinking water
installations” (August 2014) of the Central Association for Sanitary, Heating,
Air Conditioning (ZVSHK), Germany.
The drinking water used for fl ushing must be fi ltrated whereby particles ≥ 150
µm must be held back and the water must be perfectly fi t for drinking (use
REMS fi ne fi lter with fi lter cartridge 90 µm, Art. No. 115609).
“The pipe system
can be fl ushed under pressure with a drinking water/air mixture intermittently
with a minimum 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
25
32
40
50
Greatest rated width of the pipe in the fl ushed
section, in inches
1"
1¼"
1½"
2"
Minimum volume fl ow with fully fi lled pipe
section, in l/min
15
25
38
59
Minimum number of DN 15 (½") tapping
points to be opened fully or a corresponding
cross-sectional area
1
2
3
4
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.
Pr
ogram 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
2
O (0-999 l) (11) \ Enter
(see Fig. 6)
6. Open the water supply. If the minimum fl ow velocity v H
2
O = 0,5 m/s, the
minimum volume fl ow VS H
2
O and the fl ushing time are reached \ Enter
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
2
O and VS H
2
O are not reached: \ Esc = cancel, clarify
the cause, repeat the process)
7. Display screen: Water pressure (p H
2
O), minimum fl ow velocity (v H
2
O),
fl ushing time (t H
2
O), volume of used water (V H
2
O), volume fl ow (VS H
2
O)
\ Enter
8. Esc >> Start menu \ Memory Manager, data transfer >> 3
.8
During the program run, the REMS Multi-Push displays the achieved fl ow
velocity and the achieved water change on the screen among other things.
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
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.
Pr
ogram 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) \ ↓
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