WaterBackpack PAUL User manual

The WaterBackpack Company GmbH
PAUL Station Manual 2019-08-02 www.waterbackpack.org 02.08.2019
PAUL®Station
Manual
– assembly, start-up, operation and maintenance –
last modified 02.08.2019

PAUL®station manual
PAUL Station Manual 2019-08-02 www.waterbackpack.org 02.08.2019

PAUL®station manual page i
PAUL Station Manual 2019-08-02 www.waterbackpack.org 02.08.2019
Content
1Principle of the PAUL®Station ....................................................1
2What can be delivered for the PAUL®Station............................3
2.1 Overview..............................................................................................3
2.2 Upgrading an existing PAUL®standard unit.....................................4
3Before the assembly.....................................................................5
3.1 Considerations on the raw water source ..........................................5
3.2 Water supply for the Raw Water Tank ............................................... 5
3.3 Overview over available accessories for the PAUL®station ........... 6
3.4 Necessary tools...................................................................................6
3.5 Scope of delivery ................................................................................ 7
3.6 Height of the tanks relative to the PAUL®unit.................................. 8
4Assembly.......................................................................................9
4.1 Set 1 to connect the Raw Water Tank with PAUL®........................... 9
4.1.1 Overview ....................................................................................9
4.1.2 Mounting the tank connector on the Raw Water Tank................9
4.1.3 Connecting the Raw Water Tank with PAUL®...........................12
4.1.4 Remarks on the OPV or OPV-S ...............................................12
4.2 Set 2 to connect PAUL®with the Filtered Water Tank....................14
4.2.1 Overview .................................................................................. 14
4.2.2 How to install............................................................................14
4.3 Set 3 outlet FWT................................................................................ 16
4.4 Set 4 side outlet with hose ............................................................... 17
4.5 Overfill Protection Switch (OPS) for the Raw Water Tank.............. 19
4.6 Run-Dry Protection Switch (RPS) .................................................... 19
5Start-up and operation ...............................................................20
5.1 OPV adjustment ................................................................................ 20
5.2 Start-up of the PAUL®station........................................................... 21
5.3 Temporary stop of operation............................................................ 22
6Maintenance................................................................................23
6.1 Daily................................................................................................... 23
6.1.1 Water level inside PAUL®.........................................................23

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6.1.2 Sieve between RWT and PAUL®..............................................23
6.2 Weekly................................................................................................23
6.2.1 Removing slurry from the PAUL®unit .......................................23
6.2.2 Measurement of maximum filtration capacity ............................24
6.3 Monthly...............................................................................................25
6.3.1 Cleaning of the FWT.................................................................25
6.4 Undefined frequency.........................................................................26
6.4.1 Cleaning the RWT.....................................................................26
6.4.2 Cleaning the membrane module...............................................26
7Troubleshooting..........................................................................27
7.1 Waterlevel in PAUL®is too low.........................................................27
7.2 How to disassemble and re-assemble PAUL®.................................27
8Additional information................................................................32
8.1 Chlorine dosing .................................................................................32
8.2 Taking PAUL®out of operation for a long period of time...............33
9Detailed list of parts that come with set 1 to set 4...................34

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PAUL Station Manual 2019-08-02 www.waterbackpack.org 02.08.2019
List of figures
Figure 1: Scheme of the PAUL®station .........................................................1
Figure 2: requirements concerning height of tanks and PAUL®unit ................8
Figure 3: All parts that come with set 1 and how to connect............................9
Figure 4: RWT connector parts of set1 (top: ¾" version, down: 1“ version)
pre-assembled................................................................................10
Figure 5: RWT connector parts of set1 (top: ¾" version, down: 1“ version)
ready for mounting in the RWT....................................................... 11
Figure 6: RWT connector parts of set1 (top: ¾" version, down: 1“ version)
ready for mounting in the RWT....................................................... 11
Figure 7: LWS box.........................................................................................13
Figure 8: All parts that come with set 2 including water meter (left) and float
valve for the FWT (right) and how to connect.................................14
Figure 9: Connection between PAUL®and the Filtered Water Tank –
installation scheme.........................................................................15
Figure 10: Connection between PAUL®and the Filtered Water Tank (set 2)
– what comes with PAUL®and how to mount the water meter.......15
Figure 11: Set 3 consisting of trank connector and ball tap .............................16
Figure 12: Side outlet with hose ......................................................................18
Figure 13: OPV for PAUL®..............................................................................20
Figure 14: OPV with rotated float arm (transport position)...............................21
Figure 15: OPV correct adjusted .....................................................................21
Figure 16: meter reading.................................................................................24
Figure 17: sample protocol for maximum filtration test.....................................25
Figure 18: membrane module – look through the slits between the plates ......31

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List of tables
Table 1: List of parts included in set 1: connection between RWT and
PAUL®(RWT connection with ¾" diameter)....................................34
Table 2: List of parts included in set 1: connection between RWT and
PAUL®(RWT connection with 1" diameter).....................................35
Table 3: List of parts included in set 2: connection between PAUL®and
FWT................................................................................................35
Table 4: List of parts included in set 3: outlet FWT........................................36
Table 5: List of parts included in set 4: side outlet with hose.........................36

PAUL®station manual page 1
PAUL Station Manual 2019-08-02 www.waterbackpack.org 02.08.2019
1 Principle of the PAUL®Station
The waterbackpack PAUL®is the core of the PAUL®station. The basic idea
behind it is that it is essential to be able to tap large amounts of water in a short
time. As the filtration process in PAUL®is steady but slow, two additional tank
are necessary:
a Raw Water Tank (RWT) that stores the raw water so PAUL®can filter
continuously
a Filtered Water Tank (FWT) to store the filtered water during times where
no water is tapped
Figure 1 shows a scheme of the PAUL®Station arrangement.
Figure 1: Scheme of the PAUL®station

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Water is pumped into the RWT (as an example, in the scheme above realized
with a solar powered solution) and flows into the PAUL®unit. The filtered water
from the PAUL®unit then flows into the FWT.
As a consequence, all three units have to be equipped with installations that
prevent overfilling in order to allow fully unattended use.
This automatic overfilling prevention for the whole PAUL®station is realized
by the following tools (see also Figure 1):
in the RWT: the OPS, i.e. Overfill Protection Switch, an electrical switch in
a float is used that switches off the electrical raw water pump if the water-
level exceeds an adjustable level
in the PAUL®unit: the OPV, i.e. Overfill Protection Valve (also called "auto-
stop valve") is used that closes the inlet if the waterlevel in PAUL®exceeds
a certain height
in the FWT: the FV, i.e. Float Valve (also called "auto-stop valve") is used
that closes the inlet to the FWT if the water level in the FWT exceeds an
adjustable level
Another thing that is necessary in most situations is the RPS, i.e. the Run-dry
Protection Switch for the electric pump. The device itself is identical with the
OPS.

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PAUL Station Manual 2019-08-02 www.waterbackpack.org 02.08.2019
2 What can be delivered for the PAUL®Station
2.1 Overview
The minimum scope of delivery for a permanent water supply solution by the
PAUL®station consists of
PAUL®unit equipped with
OPV (Overfill Protection Valve) which replaces the standard sieve of
PAUL®
This is the minimum requirement for a permanent water supply with the
PAUL®station, as it enables the connection between the RWT (or any
other water supply connection) with PAUL®and a self-closing cover which
can be opened in order to fill PAUL®with a bucket alternatively. Here a
sieve is provided identical to the standard sieve.
In addition to this minimum scope of delivery, the following items are available
and recommended, depending upon the local circumstances:
set 1: connecting the RWT to PAUL
set 2: connecting PAUL®to the FWT
set 3: outlet of the FWT
set 4: side outlet with hose
OPS
RPS
With the side outlet with hose, you can observe the water level inside PAUL®,
as the hose is transparent. This is sufficient in most cases.
For those, however, who want/need an automated warning once the water level
inside PAUL®is low, we offer a PAUL®control unit which consists of
OPV-S (Overfill Protection Valve with Sensor) which replaces the standard
sieve of PAUL®, including the nozzle to connect the RWT with PAUL®and
a self-closing cover which can be opened in order to fill PAUL®with a
bucket alternatively. Here a sieve is provided identical to the standard
sieve.
It is identical with the OPV but also has the water level sensor mounted.

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LWS (Low waterlevel Warning System) box: this separate box is con-
nected to the water level sensor mounted on the OPV-S via a 2-wire elec-
tric connection. The LWS box can be mounted close to PAUL®or even far
remote by simply adding more wiring (regardless of polarity), e.g. in the
house of the caretaker.
Although we recommend to solve the issue of water supply locally, see chapter
3.2, on special request we can also provide
12 V DC pump and
the matching solar panel
Please note: If you ordered PAUL®together with the parts needed for the
PAUL®station configuration, some items are already mounted on your PAUL®
unit.
2.2 Upgrading an existing PAUL®standard unit
If you upgrade an existing PAUL®standard unit, simply exchange the sieve and
mount the OPV (or the OPV-S) instead by removing the two screws that hold
the sieve, and then mount the OPV/OPV-S in this place by using the same
screws.