BWT PERMAQ PRO 1810 User guide

Installation and operating Instruction EN
BWT PERMAQ®
PRO 1810-1820
Reverse Osmosis Plant

EN
2

EN
3
Contents
1. GENERAL INFORMATION ...............................................................................................4
2. EXPLANATION OF WORDS.............................................................................................4
3. POSITIONING OF THE PLANT .........................................................................................5
4. WATER QUALITY ............................................................................................................5
5. WATER CONNECTIONS...................................................................................................6
5.1 Connection of soft water to the BWT PERMAQ®Pro.................................................................. 6
5.2 Connection of permeate hose ................................................................................................ 6
5.3 Connection of permeate (desalinated water for consumption) ..................................................... 6
5.4 Connection of outlet hose (concentrate) ................................................................................... 6
6. ELECTRICAL CONNECTIONS ............................................................................................6
7. START-UP OF THE PLANT................................................................................................6
7.1 Adjustment of outlet amount................................................................................................... 7
7.2 Adjustment of recirculation amount ......................................................................................... 7
8. AUTOMATIC FUNCTIONS................................................................................................8
9. MAITENANCE AND TROURBLE-SHOOTING......................................................................8
9.1 Maintenance: ...................................................................................................................... 8
9.2 Troubleshooting ................................................................................................................... 9
9.2.1 The plant capacity has dropped ...................................................................................................... 9
9.2.2 The quality of the treated water is higher than 20 µS/cm ................................................................. 10
9.2.3 Alarm: Low feed water pressure .................................................................................................... 10
9.2.4 Alarm: Transport pump................................................................................................................. 11
9.2.5 Indication: Level low .................................................................................................................... 11
9.2.6 Alarm: Level high......................................................................................................................... 12
9.2.7 The plant is not operating ............................................................................................................. 12
9.2.8 Alarm: The transport pump stops and starts..................................................................................... 12
9.2.9 Hard water is measured at the soft-water tap .................................................................................. 12
9.2.10 Survey of Alarm Conditions .......................................................................................................... 13
9.2.11 Settings ...................................................................................................................................... 14
10. TECHNICAL SPECIFICATION........................................................................................15
10.1 Technical specifications ................................................................................................... 15
10.2 Technical data ............................................................................................................... 15
11. FUNCTIONAL DESCRIPTION .......................................................................................16
12. REPLACEMENT OF MEMBRANES.................................................................................16
13. ANNEX .....................................................................................................................17
13.1 P&I Diagram .................................................................................................................. 18
13.2 Layout Drawings............................................................................................................. 19
13.3 Wiring Diagram............................................................................................................. 20
13.4 Start-up Test ................................................................................................................... 23
13.5 Operating Journal........................................................................................................... 24
13.6 Spare Parts List BWT PERMAQ®Pro 1800 ......................................................................... 25
13.7 Spare Parts Drawing ....................................................................................................... 26
13.8 Options......................................................................................................................... 27
13.8.1 Option 1 - Hose Connector Kit ...................................................................................................... 27
13.8.2 Option 2 - Softening Units ............................................................................................................ 27
13.8.3 Option 3 - Booster Unit................................................................................................................. 27
13.8.4 Option 4 - Carbon Filter ............................................................................................................... 27
13.8.5 Option 5 - Mixing........................................................................................................................ 27
13.8.6 Option 6 - Conductivity Meter....................................................................................................... 27
13.8.7 Option 7 - Conductivity Meter including a 4-20 mA outlet ............................................................... 28
13.8.8 Option 8 - Storage Tank............................................................................................................... 28
13.8.9 Option 9 - Mixed-bed .................................................................................................................. 28
13.8.10 Option 10 - Upgrade Kit .......................................................................................................... 28
13.8.11 Option 11 - Tool/Spare Part Box............................................................................................... 28
13.9 Declaration of Conformity................................................................................................ 29

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1. GENERAL
INFORMATION
This installation and operating
manual applies to BWT
PERMAQ®Pro 1800 total desal-
ination plant.
This installation and operating
manual contains important
information about the correct
installation and operation of the
BWT Pro 1800 plant.
1. Enclosed “Start-up test”-
(section 13.4) shall be
completed and filed to-
gether with the operat-
ing journal.
2. Operating journal shall
be updated as described
in “Operating journal”
(section 13.5).
3. Floor drain must be
available in the immedi-
ate vicinity of the plant.
4. The BWT PERMAQ®Pro
1800 plant removes
more than 99 % of all
salts, and that is why
you need to be alert to
possible post-treatment
with mixed bed or simi-
lar, if a better water
quality is requested.
5. The authorised agent
takes on full responsibil-
ity without costs for BWT
who, however, grants a
12 months guarantee in-
clusive of replacement of
defective spare parts, on
condition that the parts
are returned to BWT
along with a specifica-
tion of the fault and stat-
ing production month/
year (plant no.).
6. The warranty becomes
invalid, if the plant is not
commissioned by an au-
thorised BWT service
technician.
7. The warranty becomes
invalid, if maintenance
intervals are not met.
Your BWT PERMAQ® Pro 1800
plant is constructed in a com-
pact design with reservoir (op-
tion) and softening unit (option)
installed externally so that the
plant takes up as little space as
possible and can be installed in
the most suitable way.
This instruction should be read
carefully before installing and
starting up the plant. Correct
installation and operation will
also form the basis of a factory
warranty.
The BWT PERMAQ® Pro 1800
plant with its compact and fin-
ished design is easy to install,
since all installations are pre-
assembled and tested in our
factory.
Your BWT PERMAQ®Pro 1800
plant is designed for a minimum
of service and for long and
unproblematic operation. How-
ever, this is on condition of
correct installation and mainte-
nance.
Always read this manual care-
fully before commissioning.
2. EXPLANATION OF
WORDS
There will be a few technical
explanations in this instruction
which we explain below.
Permeate: The treated, totally
desalinated water
which is produced
by the BWT
PERMAQ®Pro
1800
plant and supplied
to the reservoir
tank.
Concentrate: Is the water that is
led to outlet. This
water contains the
salts and minerals
that have been
removed from the
water.
Feed water: Is the water which
is led directly to
the BWT
PERMAQ®Pro
1800 plant and
which must be de-
salinated in the
BWT PERMAQ®
Pro 1800 plant.
TDS: The amount of
totally dissolved
salts, measured in
(mg/l).
Conductivity: Is the designation
of salt concentra-
tion of the water,
measured in
(µS/cm). The low-
er the value, the
better the water
quality.
Membranes: Is the filter of the
plant which by
high pressure and
flow is capable of
desalinating the
feed water.
RO: The abbreviation
for Reverse Osmo-
sis.
Transport- Is the pump which
pump: transports the
treated water from
the plant reservoir
to the consumer.
Level switch: Is a switch, which
gives a signal
when the BWT
PERMAQ®Pro
1800 plant must
either be started or
stopped, and it
stops the transport
pump in case of
dry-running of the
reservoir tank.

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Softening Is a pre-filter which
plant: softens the water,
that means it re-
moves hardness
from the water.
3. POSITIONING OF THE
PLANT
The plant must be placed in a
non-freezing environment on a
level foundation, so that the
water in the reservoir tank (op-
tion) does not overflow when the
tank is full.
The foundation must be able to
tolerate a weight load of 70 kg
in total which is the approxi-
mate weight of the BWT
PERMAQ®Pro in operation.
However, remember to take into
account the weight of the soften-
ing unit and the reservoir tank!
The outside measures of the
BWT PERMAQ®Pro are
WxDxH: 650 x 550 x 1600
mm, but when positioning the
plant you must take into account
that a softening unit (option)
and possibly a reservoir tank
(option) have to be installed too.
You have to allow for 1000 mm
extra height in order to be able
to take out the plant mem-
branes.
Also, there has to be made
room on the left side of the plant
for the water installation, espe-
cially the outlet hose from the
plant must be considered: The
hose may never be bent!
Positioning of plant must be in
such a way that the air intake at
the top of the pump never be-
comes covered.
Furthermore, there are readings
that have to be performed on
the front of the plant, e.g. flow
meter and possible alarm in
case of lacking water pressure.
Consequently the front must not
be covered up, but should al-
ways be visible.
In case of a stoppage, situations
may arise where the level in the
reservoir (option) overflows.
Therefore, there shall always be
a drain in close proximity of the
plant, placed in such a way that
the overflowing water does not
cause any damage.
If there is no floor drain near
the plant, installing the plant is
at your own risk.
4. WATER QUALITY
The feed water, which is to be
treated in the BWT PERMAQ®
Pro 1800 plant, must be sof-
tened drinking water quality
with maximum 500 mg/l TDS.
Max. temperature: 35 °C. The
plant is adjusted at 10 °C in our
factory.
The feed water may maximum
contain:
* Hardness: 0.5 °dH (obtain
able by installation a soften-
ing unit (option))
* Fe: 0.05 mg/l
* Mn: 0.02 mg/l
* Cl: 0.1 mg/l
* Turbidity: 1.0 NTU
* SDI: 3.0 %/min
* KMnO4 max: 10 mg/l
If there are doubts about the
raw water composition, a water
analysis must be made. The
plant must be connected to a
water pressure of minimum 3
bar and maximum 7 bar. The
quality of the treated water will
Water quality (contact BWT for technical advice)
Content
Symptom
Preventive action
TOC, BOC and
COD
Can cause slimy as well as firm hard film.
Can in some cases be micro-filtrated
or removed by means of a carbon
filter.
Iron, Manganese
(ocher)
Precipitation of iron gives a reddish-brown film and
precipitation of manganese gives a black deposit.
Sand filter –oxidation, softening,
greensand.
Calcium, magne-
sium (hard water)
The membrane scales.
Softening, antiscalant.
Silica
The membrane scales.
Antiscalant.
SDI (silt)
The membranes gets clogged.
Microfiltration (absolute), ultrafiltra-
tion, flocculation.
Oil
The membrane is greasy from oil.
Carbon filter.
Particles
The membrane gets clogged due to hard deposits.
Microfiltration.
Chlorine, pesti-
cides, organic
solvents
Membrane deformed. Permeate capacity and quali-
ty changed and cannot be CIP-cleaned back to the
original capacity. The deformation is not visible.
Free chlorine shall be removed by
active carbon filter and chemical
cleaning, either with Thiosulphate or
sulphite.
Bacteria
Membrane is clogged by slime.
Chlorination + de-chlorination, UV,
micro-filtration 0.2 µS/cm and ultra-
filtration.

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be less than 20 µS/cm at 10 °C.
5. WATER CONNECTIONS
Note! All water connections
must be in compliance with local
regulations.
For connection of raw water to
the softening unit, see the en-
closed guide on the softening
unit.
5.1 Connection of soft water
to the BWT PERMAQ®
Pro
Connect soft water to the con-
nection on the left side of the
plant on the backside (see encl.
13.2). We recommend connec-
tion with ¾" flexible pressure
hoses. BWT stock complete
assembly kits for the BWT
PERMAQ®Pro 1800 series.
The best operating result is ob-
tained by connection to mini-
mum ¾" feed water pipe. In this
way you obtain the necessary
pressure and flow to the plant.
in case of a too small feed water
connection, there will be a risk
of outage on the plant due to
lacking water pressure/amount,
e.g. during flushing of mem-
branes, when the plant is started
up, and a bad function of the
softening plant.
5.2 Connection of permeate
hose
The permeate hose (14 mm),
which is enclosed with the plant,
shall be fitted on the external
reservoir (option) and be led on
to the flow meter of the BWT
PERMAQ®Pro (outlet top).
5.3 Connection of permeate
(desalinated water for
consumption)
Connect desalinated water (wa-
ter for consumption) to the water
connection on the reservoir
pump (option) –the reservoir
pump is recommended connect-
ed with ¾" flexible pressure
hoses, (see encl. 13.2).
Important! Totally desalinated
water can accelerate corrosion,
consequently you should always
use corrosion proof piping for
the treated water, e.g. stainless
steel or PVC pipe.
5.4 Connection of outlet hose
(concentrate)
The outlet valve (concentrate)
shall be fitted with a 14 mm
hose (enclosed). The hose shall
be led to floor drain. (If a bent
piece of hose has been fitted on
the outlet valve, this shall be
removed first).
Important! The outlet pipe must
not be led all the way down into
the water in the floor drain, as
there is then a risk it will get
sucked back into the plant in
case of a stoppage.
Important! It should never be
possible for the outlet hose to
become bent or in any other
way clogged, as it would dam-
age the membrane(s).
6. ELECTRICAL
CONNECTIONS
Note! The electrical connections
must be made in compliance
with local regulations.
The electrical connection to the
BWT PERMAQ®Pro 1800 plant
must be as follows:
*Voltage: 3x400 V+N+PE
*Net: TN-S
*Frequency: 50 Hz
*Fuse: 16 Amp
See also electric diagram under
encl. 13.3
7. START-UP OF THE
PLANT
Read section below carefully
before starting up the plant.
When the plant is started for the
first time, the attached Start-up
test (see Section 13.4) must be
filled and archived together with
Operating Journal (see Section
13.5).
Check before start-up that all
water and electric connec-
tions are made as described
in previous chapters and in
compliance with local regula-
tions.
Before start-up the softening
plant (option) shall be adjust-
ed at the current hardness in
the feed water supply and
then commissioned. This is
done by following the soften-
ing plant instruction manual.
Assuming that the softening
plant is now in operation,
check that it supplies soft wa-
ter at the soft-water control
valve (V3). Sampling set is
included in deliveries of new
softening plants (see instruc-
tion manual in the box).
Pull out the permeate hose
from the reservoir tank (op-
tion) and lead it away from
the reservoir to a drain. (This
does not apply to plants with
quality flush (option)).
Open the outlet valve com-
pletely (see encl. 13.7 Pos.
6).
Now switch on the plant
power supply. The plant will
now be operating.
Check that the motor runs in
the right direction.
Now the plant must operate
and flush to drain for 20-30
minutes before re-adjusting
the outlet valve.
After completed flushing,
adjust the outlet valve (see
encl. 13.7 Pos. 6 and recircu-
lation valve 13.7 Pos. 1).

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7.1 Adjustment of outlet
amount
Important! Read the entire
chapter before adjustment is
started.
The outlet amount must be ad-
justed and which amount is
suitable on your plant depends
on the feed-water quality. Too
high water recovery will dam-
age the plant membranes. On
condition that the raw water
complies with the water quality
requirements, it can operate at
a recovery rate of 70-80% with
softening depending on the
amount of organic material in
the water.
BWT PERMAQ®Pro
Permeate capacity (l/h)
Outlet amount
(l/h)
(with softened
water)
Surface water (70% recovery)
Surface water (75% recovery)
Groundwater (80% recovery)
1810
500
215
167
125
1820
1000
429
333
250
An easy way to check the outlet
amount from the plant, is:
)(
(%)covRe )/(100
)(
hlpacityPermeateca
ery hlcapacityPermeatex
hlamountOutlet


Ex.: BWT PERMAQ®Pro 1820
with 80 % recovery:
)(2501000
80
1000100 hl x
ntOutletamou 
When the desired amount of
outlet water has been obtained,
tighten the counter nuts on the
outlet valve so that it is locked. It
is important that the outlet
amount is checked after counter
nuts have been tightened to
make sure that the valve has not
moved. Both counter nuts must
be locked/tightened.
Important! The needle valve
must be locked on the pre-
scribed outlet amounts. If the
needle valve is closed so that the
outlet amount becomes reduced,
it will damage the plant mem-
branes.
7.2 Adjustment of recircula-
tion amount
Adjust the recirculation amount
by loosening the counter nuts on
the recirculation valve. Adjust
the amount of permeate at max-
imum 500 and 1000 l/h for the
BWT PERMAQ®Pro 1810 and
1820 respectively, at a tem-
perature between 10-35 °C.
If the temperature is below 10
°C, the capacity must be 3%
lower than normal capacity for
each degree below 10 °C.
E.g. if the feed water tempera-
ture is 8 °C, for an BWT
PERMAQ®Pro 1810 it means
that the permeate capacity will
be 6 % below the normal 500
l/h, i.e. 468 l/h.
When the requested pressure
and permeate capacities have
been obtained, check again if
the outlet amount has been
adjusted correctly. (It is recom-
mended to loosen both counter
nuts while fine-adjusting the
valves).
When both valves have been
adjusted, lock both valves with
the counter nuts. Take care not
to move the valves when tighten-
ing the counter nuts.
Important! Both counter nuts
must be locked/tightened on the
valves.
NB! After the valves have been
locked, the plant must be started
and stopped 2 times, and then
the flow shall be checked again
–the valves can then be read-
justed if necessary.
Check on the high-pressure
manometer that it shows the
correct operating pressure.
BWT PERMAQ®Pro
1810
1820
Pressure after the
high pressure pump
(bar)*
13
13
Flow after the
high pressure pump
(l/h)
1667
2333
Flow permeate
(l/h)
500
1000
Flow concentrate
(l/h)
167
333
Flow recirculation
(l/h)
1000
1000
Please note that the operating
pressure may vary by different
temperatures and capacities.
Now check the quality of the
treated water on the permeate
hose; the conductivity must be
below 20 µS/cm (conductivity
meter is available as optional
equipment).
Check that the BWT PERMAQ®
Pro automatically starts and
produces treated water.
You can check this on the flow
meter of the BWT PERMAQ®
Pro.
Check if the BWT PERMAQ®Pro
automatically shuts down by too
low feed water pressure or lack-
ing feed water supply.
This is done by slowly closing
the feed water supply while the
BWT PERMAQ®Pro is in opera-
tion. When the water supply has
been interrupted, the BWT
PERMAQ®Pro shall stop auto-
matically within 15 sec.
In order to put the BWT
PERMAQ®Pro back into opera-
tion, the water supply must be
re-established and the power
supply disconnected and then
reconnected. The BWT
PERMAQ®Pro will automatically
be in normal operation again!.
The plant is now commissioned
and ready for use.

EN
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8. AUTOMATIC
FUNCTIONS
The BWT PERMAQ®Pro 1800
plant is equipped with a control
box which has following built-in
control functions:
Level switch (option) for
start/stop of high-pres-
sure pump
Indication of low water
level and stop of
transport pump (option)
Solenoid valve controls
feed water inlet
Pressure switch for
start/stop transport
pump (option)
Alarm will go off when
feed water pressure
drops below 0.5 bar
for more than 2 min
Stop of pump is de-
layed by 20/30 sec-
onds.
Extra level switch,
Alarm High level (Op-
tion).
Alarm conditions and DIP-
switch - se section 9.2.10
and 9.2.11.
9. MAITENANCE AND
TROURBLE-SHOOTING
(See also encl. “13.5 Operating
journal”).
9.1 Maintenance:
The BWT PERMAQ®Pro is pro-
duced and designed for a min-
imum of maintenance and ser-
vice. However there are some
functions which should be
checked regularly, therefore it is
important to comply with
maintenance intervals.
Maintenance intervals are
compiled by updating BWT
PERMAQ®Pro’s operating
journal “13.5 Operating jour-
nal”.
Daily:
Capacity permeate FI1
Conductivity (option) QIS 1
Pressure after the high-
pressure pump PI1
Feed water pressure
Feed water temperature
Draw daily feed water sam-
ples (applies only if a soften-
ing unit is installed ahead of
the BWT PERMAQ®Pro). If
the water hardness after a
softening plant is above than
0.5 °dH check the salt tank
and refill if necessary.
Every week:
Flushing of the membranes
must be done at least once a
week. Open valve V3 com-
pletely for half an hour while
the plant is operating. Then
adjust valve V3, so that the
concentrate flow becomes
20-25% again, see chapters
7.1 and 7.2
Biannually:
Check of pump. Follow the
manufacturer’s instructions.
Check pipelines and con-
nectors for leaks.
Check all pressure switches,
i.e. function and settings.
Note! If the plant needs to be
taken out of operation for a
long time, or there is a risk it
might be exposed to frost, each
membrane element must be
preserved.
How long the plant can be out
of operation before the mem-
branes need to be preserved,
depends on the intensity of the
organic growth. By surface
water the membranes must be
preserved at a standstill lasting
3 days or longer, and by
ground water the membranes
must be preserved at a standstill
lasting 7 days or longer.
For preservation, fill the mem-
branes with a following solution:
Mix
proportion
Preser-
vation
[%]
Frost
protection
[%]
Mono
Propylene
Glycole
-
20.0
Sodium-
bisulphite
1.0
1.0
For longer-lasting preservation
be aware of organic growth.
When frost-protecting you also
need to be aware that the pH-
value should never drop below
pH 3. In that case there will be a
risk that the bisulfite oxidises
into sulphuric acid.
If the plant operating conditions
and/or capacity change com-
pared to the start-up day, the
plant must be checked in prepa-
ration for a possible cleaning of
the membranes and/or adjust-
ment of the plant capacity.
Following must be checked
regularly:
If the capacity has dropped
by more than 10%
If the pressure after the high-
pressure pump has increased
If the conductivity has in-
creased (option)
For problem solving, see chap-
ter “9.2 Troubleshooting”.

EN
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9.2 Troubleshooting
This section deals with the problems that may arise on the plant.
9.2.1 The plant capacity has dropped

EN
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9.2.2 The quality of the treated water is higher than 20 µS/cm
9.2.3 Alarm: Low feed water pressure

EN
11
9.2.4 Alarm: Transport pump
9.2.5 Indication: Level low

EN
12
9.2.6 Alarm: Level high
9.2.7 The plant is not operating
9.2.8 Alarm: The transport pump stops and starts
Check AQUA Flex’s manual chapter 6. Troubleshooting
9.2.9 Hard water is measured at the soft-water tap
Check softening plants manual for troubleshooting

EN
13
9.2.10 Survey of Alarm Conditions
LED function: In normal operation the LED’s are lit corresponding to the components they represent.
“Re-start ALARM” on TP-pump:
(Nothing is working –
permanent condition)
Section 9.2.8
ALARM - Too high water level:
(Nothing is working –
permanent condition)
Section 9.2.6
ALARM -Low water pressure and
Low water level:
(Nothing is working –
permanent condition)
Restore feed water pres-
sure to >0.5 bar (Section
9.2.3), then check why
water level is low (Sec-
tion 9.2.5)
Too low water level (no ALARM):
(TP-pump stopped,
HP-pump is working)
Section 9.2.5
“On-time ALARM” - on TP-pump:
(Nothing is working –
permanent condition)
Section 9.2.4
ALARM - Too low feed water
pressure: (Nothing is working –
permanent condition)
Section 9.2.3
Too low feed water pressure:
(HP-pump stopped –
TP-pump is working)
Automatic restart
(3 times) if feed water
pressure is <0.5 bar
External stop - TP-pump,
can be jumped at start-up:
(HP-pump is working)
Check the reason for the
external stop and rectify
the fault
External stop - HP-pump:
(TP-pump is working)
Check the reason for the
external stop and rectify
the fault
ALARM
LEVEL
TRANSPORT
PUMP (TP-pump)
HIGH PRESSURE
PUMP (HP-pump)
INLET
POWER
Description
of alarm-
and fault
conditions
Trouble-
shooting/
comments
LED’s are lit
LED’s flashes slowly (½ Hz)
LED’s flashes rapidly (5 Hz)
BWT PERMAQ®Pro emits beep tone at Alarm condition (Nothing is working), which can only be neutralised by
rectifying the fault, then switching the plant OFF for 5 seconds and switching ON again.

EN
14
9.2.11 Settings
It is possible to adjust the various time settings for Start, Stop and Alarm, plus insert a start-up delay of the pump.
Use of DIP-switch:
No. 1 High-pressure pump
No. 2 Transport pump
No. 3 Selection of BWT PERMAQ®Pro 1800 model
No. 4-6 Transport pump Factory settings
ON/OFF
switch
F2 –Fuse (High pressure pump)
F3 –Fuse (Transport pump)
DIP-switch
F4 –thermal relay
(High pressure pump)
F5 –thermal relay
(Transport pump)

EN
15
10. TECHNICAL SPECIFICATION
10.1 Technical specifications
BWT PERMAQ®Pro 1800
Tag number
Description
Type/data
P1a
High-pressure pump
2.2 kW, 4.45A
P1b
High-pressure pump
2.2 kW, 4.45A
P2 (option)
Transport pump
0.85 kW, 4.5A / 1.2 kW, 4.8A
FI 1
Flow meter
Ø32 PVC
PI 1
Manometer
0-40 Bar, ¼”
V1
Needle valve
Brass
V2
Needle valve
Brass
Y1
Solenoid valve NC
POM
PS 1
Pressure switch NO
¼” 0.5 Bar
PS 2 (option)
Pressure switch NC
¼” -0.2 - 8 Bar
QIS 1 (option)
Conductivity meter
½” Connection for sensor
10.2 Technical data
BWT PERMAQ®Pro 1800
1810
1820
Capacity
l/h*
500
1000
Number membranes
pcs
1
2
Maximum water recovery
%
75-80
Weight (full)
kg
60
70
Salt retention
%*
>99
Conductivity
µS/cm*
<20
Power connection
V
400
Power consumption
kW/m³
2,76
2,05
Electrical frequency
Hz
50
Pipe inlet
inch
¾"
Concentrate outlet
mm
14
Permeate outlet
mm
14
Width, Depth, Height (BxDxH)
mm
650x550x1600
Water temp. (Min./Max.)
C
5 / 35
Inlet water pressure (Min./Max.)
bar
3 / 7
High pressure pump
Tag number
P1a
P1b
* At drinking water quality 10C, 3 bar, max. 500 mg/l total salt content.

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11. FUNCTIONAL
DESCRIPTION
The water is pressed through the
RO membrane by means of a
high-pressure pump. The per-
meate (desalinated water) is
then led to consumption and can
e.g. be collected in a reservoir.
The concentrate (the water con-
taining the concentrated salts) is
led to outlet. The relation be-
tween permeate/ concentrate
shall be adjusted manually on
the needle valve.
Under normal operating condi-
tions the RO membranes have a
long lifetime. But even with a
good feed water quality, layers
of impurities will, to a certain
extent, occur and there will be a
slow reduction of the permeate
capacity.
12. REPLACEMENT OF
MEMBRANES
Read this chapter before dis-
mounting/replacing the mem-
branes.
Turn off the power and discon-
nect the water to the plant.
Dismount the U-lock placed at
the top of the membrane pipe.
(the U-lock keep the membrane
bottom in place).
Remove the pin in the U-lock
and pull the lock out of the pipe.
The end plates can now be
pulled out of the membrane
pipe by wriggling the end plates
from side to side and simultane-
ously pull upwards.
Note! it may be necessary to
use a puller to get the end plates
out of the membrane pipe. Or-
der a puller for a 4" membrane
pipe from your usual supplier or
from BWT.
The membrane can now be
pulled out of the membrane
pipe.
Note! at which end the big,
black V-cup seal, located on the
outside of the membrane is
placed. When the new mem-
brane is to be fitted, this V-cup
seal must be fitted at the same
end of the membrane as the
former one, i.e. if the V-cup seal
is located at the top of the
membrane pipe, then the new
membrane V-cup seal shall also
be placed in that way, so that
the V-cup seal is located at the
top when the membrane is refit-
ted in the membrane pipe.
When all connections have been
refitted and the end plates se-
curely fastened with the U-lock,
then the plant must be started up
again.
Re-connect raw water.
Open the outlet valve completely
and close the recirculation valve
completely(section 13.7, pos 1).
Lead the permeate hose to
drain.
Reconnect power to the plant.
The plant will now be in opera-
tion. Let the plant flush in this
way for 20-30 minutes.
Then adjust he outlet valve and
the recirculation valve.
Check the plant operating pres-
sure on the manometer.
Check that the water quality is
<20 µS/cm. This can be
checked on the permeate hose
(conductivity meter is optional
equipment). Lead the hose back
to the reservoir (option), when
the quality is satisfactory.
Check on the flow meter that the
plant capacity is satisfactory.
The plant is now in normal op-
eration and ready for use.
Make notes in the operating
journal:
1. Date of replacement of
membranes
2. New capacity on the plant,
flow meter FI1(13.7 Spare
parts drawing Pos. 9)
3. Water quality, conductivity
meter (option)
4. Plant operating pressure,
manometer (13.7 Spare parts
drawing Pos. 4)
5. Feed water temperature
6. Feed water pressure

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13. ANNEX
13.1 P&I Diagram
13.2 Layout drawings
13.3 Wiring diagram
13.4 Start-up test
13.5 Operating journal
13.6 Spare-parts list BWT PERMAQ®Pro 1800
13.7 Spare-parts drawing
13.8 Options
13.9 Declaration of conformity

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13.1 P&I Diagram

EN
19
13.2 Layout Drawings

EN
20
13.3 Wiring Diagram