Grunbeck BOXER RX 1 1/2 User manual

We understand water.
Backwash filter | BOXER RX/RDX 1½" –2"
Operation manual

General Contact
Germany
International Sales
Phone [phone]
Service
Phone [phone]
[email protected]
Availability
Monday to Thursday
7:00 am - 6:00 pm
Friday
7:00 am - 4:00 pm
We reserve the right to technical modifications1.
© by Grünbeck Wasseraufbereitung GmbH
Original operation manual
Edition: January 2023
Order no.: 100097460000_en_034

Table of contents
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Table of contents
Table of contents................................................................ 3
1Introduction ............................................................... 4
1.1 Validity of the manual ................................................ 4
1.2 Product identification ................................................. 4
1.3 Symbols used ............................................................ 5
1.4 Depiction of warnings ................................................ 6
1.5 Demands on personnel.............................................. 6
2Safety ......................................................................... 8
2.1 Safety measures........................................................ 8
2.2 Product-specific safety instructions ........................... 8
2.3 Conduct in emergencies ............................................ 8
3Product description .................................................. 9
3.1 Intended use .............................................................. 9
3.2 Product components................................................ 10
3.3 Functional description.............................................. 11
3.4 Accessories ............................................................. 11
4Transport and storage............................................ 12
4.1 Transport ................................................................. 12
4.2 Storage .................................................................... 12
5Installation ............................................................... 13
5.2 Requirements for the installation site....................... 14
5.3 Checking the scope of supply.................................. 14
5.4 Water installation ..................................................... 15
6Start-up/Commissioning ........................................ 18
6.1 Checking the product............................................... 18
6.2 Setting the month indicator ...................................... 19
6.3 Setting the pressure reducer (BOXER RDX)........... 19
6.4 Handing over the product to the owner/operating
company ...................................................................20
7Operation/Handling..................................................21
7.1 Installing Grünbeck’s myProduct app .......................21
8Maintenance and repair...........................................22
8.1 Cleaning ...................................................................22
8.2 Intervals ....................................................................22
8.3 Inspection .................................................................23
8.4 Maintenance .............................................................24
8.5 Spare parts ...............................................................26
8.6 Wearing parts ...........................................................26
9Troubleshooting.......................................................28
9.1 Observations ............................................................28
10 Decommissioning....................................................29
10.1 Temporary shutdown................................................29
11 Dismantling and disposal .......................................30
11.1 Dismantling...............................................................30
11.2 Disposal....................................................................30
12 Technical specifications .........................................31
12.1 Pressure loss curves BOXER RX.............................32
13 Operation log............................................................33
13.1 Start-up/Commissioning log......................................33
13.2 Maintenance .............................................................34

Introduction
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1 Introduction
This manual is intended for owners/operating companies, operators/users as well as quali-
fied specialists and ensures the safe and efficient handling of the product. The manual is an
integral part of the product.
►Carefully read this manual and the included manuals on the components before
you operate your product.
►Obey all safety and handling instructions.
►Keep this manual and all other applicable documents, so that they are available
when needed.
Illustrations in this manual are for basic understanding and can differ from the actual design.
1.1 Validity of the manual
This manual applies to the products below:
●Backwash filter BOXER RX 1½" (DN 40)
●Backwash filter BOXER RX 2" (DN 50)
●Backwash filter BOXER RDX 1½" (DN 40)
●Backwash filter BOXER RDX 2" (DN 50)
1.2 Product identification
You can identify your product based on the product designation and the order no. indicated
on the type plate.
►Check whether the products given in chapter 1.1 correspond to your product.

Introduction
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The type plate is located on the filter head.
Designation
1
Data matrix code
2
Product designation
3
Serial no.
4
Order no.
5
QR code
6
Obey the operation manual
7
Pore size
Designation
8
Water temperature
9
Nominal pressure
10
DVGW test mark
11
Flow rate
12
Nominal connection diameter
13
Product type
1.3 Symbols used
Symbol
Meaning
Danger and risk
Important information or requirement
Useful information or tip
Written documentation required
Reference to further documents
Work that must be carried out by qualified specialists only
Work that must be carried out by technical service personnel only

Introduction
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1.4 Depiction of warnings
This manual contains information and instructions that you must obey for your personal
safety. The information and instructions are highlighted by a warning symbol and are struc-
tured as shown below:
1.4.1.1
1.4.1.2 SIGNAL WORD
1.4.1.3 Type and source of hazard
1.4.1.4
●Possible consequences
►Preventive measures
The following signal words are defined subject to the degree of danger and might be used in
the present document:
Warning symbol and
signal word
Consequences if the information/
instructions are ignored
DANGER
Personal injury
Death or serious injuries
WARNING
Possible death or serious injuries
CAUTION
Possible moderate or minor injuries
NOTE
Damage to
property
Possible damage to components, the product and/or its func-
tions, or an object in its vicinity
1.5 Demands on personnel
During the individual life cycle phases of the product, different people carry out work on the
product. The respective tasks require different skills.
1.5.1 Qualification of personnel
Personnel
Requirements
Operator/user
•No special expertise required
•Knowledge of the tasks assigned
•Knowledge of possible dangers in case of incorrect behaviour
•Knowledge of necessary protective equipment and protective
measures
•Knowledge of residual risks
Owner/operating company
•Product-specific expertise
•Knowledge of statutory regulations on work safety and accident
prevention
Qualified specialist
•Electrical engineering
•Sanitary engineering
(HVAC and plumbing)
•Transport
•Professional training
•Knowledge of relevant standards and regulations
•Knowledge of detection and prevention of potential hazards
•Knowledge of statutory regulations on accident prevention
Technical service
(Grünbeck's technical service/
authorised service company)
•Extended product-specific expertise
•Trained by Grünbeck

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1.5.2 Authorisations of personnel
The table below describes which tasks must be carried out by whom.
Operator/
user
Owner/
operating
company
Qualified
specialist
Technical
service
Transport and storage
x
x
x
Installation and mounting
x
x
Start-up/Commissioning
x
x
Operation and handling
x
x
x
x
Cleaning
x
x
x
x
Inspection
x
x
x
x
Maintenance
semi-annually
x
x
x
annually
x
x
Troubleshooting
x
x
x
Repair
x
x
Decommissioning and restart/recommissioning
x
x
Dismantling and disposal
x
x

Safety
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2 Safety
2.1 Safety measures
●Only operate your product if all components are installed properly.
●Obey the local regulations on drinking water protection, accident prevention and
occupational safety.
●Do not make any changes, alterations or extensions on your product. Only use ge-
nuine spare parts for maintenance or repair.
●Keep the premises locked against unauthorised access to protect imperilled or un-
trained persons from residual risks.
●Comply with the maintenance intervals (refer to chapter 8.2). Failure to comply can
result in the microbiological contamination of your drinking water system.
2.1.1 Pressure-related hazards
●Components can be under pressure. There is a risk of injuries and damage to
property due to escaping water and unexpected movement of components. Check
the pressure lines and the product for leaks at regular intervals.
●Before starting repair and maintenance work, make sure that all affected compo-
nents are depressurised.
2.2 Product-specific safety instructions
WARNING
Excessive contamination of the filter element
●Health risk due to contamination of the drinking water
►Comply with the intervals and recommendations for inspection and maintenance
of the filter.
2.3 Conduct in emergencies
2.3.1 In case of water leaks
1. Close the shut-off valves for the water flow upstream and downstream of the filter.
2. Locate the leak.
3. Eliminate the cause of the water leak.

Product description
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3 Product description
3.1 Intended use
●The backwash filters BOXER RX and BOXER RDX are designed for filtering drink-
ing water.
●The backwash filter RDX with pressure reducer, in addition, is suitable for the ad-
justment of the outlet pressure on the withdrawal side in order to maintain the max.
admissible operating pressure stipulated in DIN EN 806-2.
●The filters can be used for positive and negative pressure applications. The adjust-
ment of the outlet pressure on the withdrawal side, however, only works when ap-
plied in the positive pressure range.
●The backwash filters are designed according to the stipulations of DIN EN 13443-
1, DIN 19628 and DIN EN 1567 and intended for installation in drinking water pipes
according to DIN EN 806-2 (installation immediately downstream of the water me-
ter).
●They protect the water pipes and connected water-carrying system parts from dis-
turbances and corrosion damage due to undissolved impurities (particles) such as
rust particles, sand, etc.
3.1.1 Foreseeable misuse
●The filters are not suitable for circulation water that has been treated with chemi-
cals.
●They are neither suitable for oils, greases, solvents, soaps and other lubricating
media, nor for the separation of water-soluble substances.

Product description
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3.2 Product components
Designation
Water meter screw connection
Seal
Connection flange
Pressure gauge
Pressure reducer cartridge
O-ring
Impeller
Filter element
Designation
Filter cylinder
Backwash handwheel
Drain outlet
Fixing screws for cover
Cylinder screws for connection flange
Filter head
Cover
Maintenance ring

Product description
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3.3 Functional description
The unfiltered drinking water flows into the filter through the inlet side and from the outside in
through the filter element and to the pure water outlet. Thus, foreign particles of a size
> 100 µm are retained.
Depending on their size and weight, foreign particles stick to the filter element, or they fall
straight down into the filter cylinder.
The drain is opened by turning the backwash handwheel up to the stop, and a backwash is
carried out.
The water flows through the primary screen to the filter element and then flows through the
filter element in reverse direction of standard filtration. The particles sticking to the filter ele-
ment are effectively removed by the integrated, rotatable impeller and are washed out to the
drain.
In the backwash filter BOXER RDX, the flow-optimised pressure reducer, which is designed
according to DIN EN 1567, additionally enables the outlet pressure on the withdrawal side to
be set to 1 –6 bar (factory setting: 4 bar).
3.4 Accessories
Your product can be retrofitted with accessories. Please contact your local Grünbeck repre-
sentative or Grünbeck’s headquarters in Hoechstaedt/Germany for details.
Illustration
Product
Order no.
Drain connection DN 50
188 875
for professional installation acc. to DIN EN 1717 with integrated siphon to discharge
the backwash water to the drain

Transport and storage
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4 Transport and storage
4.1 Transport
►Transport the product in its original packaging only.
4.2 Storage
►Protect the product from the impacts below when storing it:
•Dampness, moisture
•Environmental impacts such as wind, rain, snow, etc.
•Frost, direct sunlight, severe heat exposure
•Chemicals, dyes, solvents and their vapours

Installation
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5 Installation
The installation of the system represents a major intervention into the drinking water sys-
tem and must be done by a qualified specialist only.
In accordance with DIN EN 806-2 and DIN EN 1717, the product is installed in the cold water
pipe downstream of the water meter and upstream of distribution pipes or the appliances to
be protected.
Installation example in horizontal pipe
Designation
14
Inlet shut-off valve
Designation
15
Outlet shut-off valve
Installation example in vertical pipe
Designation
16
Inlet shut-off valve
Designation
17
Outlet shut-off valve

Installation
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5.2 Requirements for the installation site
●The installation site must be frost-proof and ensure the filter's protection from
chemicals, dyes, solvents and their vapours as well as from direct sunlight.
●The installation site must be away from heat sources (e.g. washing machines, boil-
ers and hot water pipes).
●The installation room must provide a floor drain. If no floor drain is available, an ap-
propriate safety device must be installed in order to prevent water damage.
●The installation site must be adequately illuminated and ventilated.
●The installation site must be easily accessible for maintenance purposes.
5.3 Checking the scope of supply
Designation
18
Water meter screw connections
19
Seals
20
Backwash filter BOXER RX or RDX
Designation
21
Pressure reducer in case of BOXER RDX
22
Quick reference manual
►Check the scope of supply for completeness and damage.

Installation
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5.4 Water installation
5.4.1 Preparing the pipe
►Install the water meter screw connection in the pipe.
The distance between the two seals must be 160 mm.
5.4.2 Mounting the filter
The rotatable connection flange enables the filter to be adapted to any flow direction given
on site.
1. Check the flow direction given on site.
4. Loosen the 4 cylinder screws (SW 6) with an Allen key –approx. 1 full turn coun-
terclockwise (do not unscrew).

Installation
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5. Rotate the connection flange into the position matching your flow direction
(refer to the marking on the connection flange).
6. Tighten the 4 cylinder screws crosswise (torque 16 Nm) –tighten them clockwise.
7. Install the filter without mechanical stress and firmly tighten the union nuts.
5.4.3 Attaching the backwash connection
If it is not possible to install a waste water pipe, the backwash water can be collected in a
bucket/container.
Refer to the installation instructions of the drain connection (order no. 100105420000).
►Install the drain connection (not included in the scope of supply,
refer to chapter 3.4).
►Install a waste water pipe towards the drain.

Installation
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Example: Drain connection positioned on the drain
Example: Drain connection positioned on the filter
Designation
Waste water pipe provided by client on site
Designation
Drain connection DN 50 acc. to DIN EN 1717

Start-up/Commissioning
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6 Start-up/Commissioning
The initial start-up/commissioning of the product must be carried out by a qualified special-
ist only.
6.1 Checking the product
1. Open the shut-off valves.
2. Open the closest water withdrawal point downstream of the filter to the maximum.
» The filter is vented.
8. Check the filter for leaks.
9. Enter the initial start-up/commissioning in the operation log (refer to chapter 13).
» The filter is in operation.

Start-up/Commissioning
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6.2 Setting the month indicator
Via Grünbeck’s myProduct app, you will receive a message about the timely backwash of
the filter (refer to chapter 7.1).
►Set the maintenance ring to the month of the next maintenance (alternatively, to
the month of the next backwash –every six months at the latest).
6.3 Setting the pressure reducer (BOXER RDX)
The factory setting for the pressure reducer is 4 bar.
You can change this value as follows:
1. Set the required outlet pressure on the pressure reducer handwheel
(turn clockwise = pressure increase, turn counterclockwise = pressure reduction).
2. Open and close a water withdrawal point.
» The outlet pressure adjusts itself.
3. Read the actual outlet pressure on the pressure gauge.
4. Repeat steps 1. –3. until the desired pressure is reached.
» The desired outlet pressure is set.

Start-up/Commissioning
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The outlet pressure is set according to DIN EN 806-2.
►Comply with the max. admissible operating pressure.
The screw of the pressure reducer cartridge can come loose.
►Tighten the screw during annual maintenance (refer to chapter 8.4.2) and when-
ever required.
6.4 Handing over the product to the owner/operating company
►Explain to the owner/operating company how the product works.
►Use the manual to brief the owner/operating company and answer any questions.
►Inform the owner/operating company about the need for inspections and mainte-
nance.
►Hand over all documents to the owner/operating company for keeping.
6.4.1 Disposal of packaging
►Dispose of the packaging as soon as it is no longer needed
(refer to chapter 11.2).