WDT DUFTDOS-DS User manual

Article no: 14168, 21659 Language: EN
Operating Instructions
Fragrance Dosing for Steam Rooms
Type DUFTDOS-DS

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Table of contents
1About these instructions / general .......................................................................................................... 4
Scope of applicability ..................................................................................................................................4
Target group .............................................................................................................................................. 4
Symbols used..............................................................................................................................................4
Warranty ...................................................................................................................................................5
Further information ....................................................................................................................................5
2Safety ...................................................................................................................................................... 6
Intended use ...............................................................................................................................................6
Safety notices.............................................................................................................................................. 6
2.2.1 Handling of chemicals, risks to humans and the environment ..................................................................... 6
2.2.2 Protective measures and rules of conduct................................................................................................... 6
3Product description - scope of delivery.................................................................................................... 7
Scope of delivery / accessories................................................................................................................... 7
Product description ....................................................................................................................................7
3.2.1 Dosing unit .................................................................................................................................................8
3.2.2 Control unit................................................................................................................................................ 8
3.2.3 Dosing valve (option).................................................................................................................................. 9
3.2.4 Console (Option)........................................................................................................................................9
Device identification / nameplate ...............................................................................................................9
Technical data............................................................................................................................................. 9
Transport / storage..................................................................................................................................10
4Installation ............................................................................................................................................. 11
Select the installation site ..........................................................................................................................11
Installation instructions (suggested installation) .........................................................................................11
Mechanical installation ..............................................................................................................................12
Hydraulic installation.................................................................................................................................12
Electric installation ....................................................................................................................................12
5Commissioning ...................................................................................................................................... 13
Commissioning - comments ......................................................................................................................13
Commissioning tasks ................................................................................................................................13
5.2.1 Set the dosing times at the control board .................................................................................................13
5.2.2 External control / external key operation ................................................................................................13
5.2.3 Insert roller support for hose pump .........................................................................................................14
5.2.4 Prepare the fragrance concentrate ...........................................................................................................15
5.2.5 Activate the device and vent the dosing line..............................................................................................15
6Operation / service............................................................................................................................... 16
General.....................................................................................................................................................16
Control.....................................................................................................................................................16
6.2.1 Set pause time / dosing quantity...............................................................................................................16
Control System - Software........................................................................................................................16
Replenish consumables .............................................................................................................................17
7Maintenance, care, faults ....................................................................................................................... 18
Device maintenance..................................................................................................................................18
7.1.1 Check / change hose set ..........................................................................................................................18
7.1.2 Checking dosing valve...............................................................................................................................19
7.1.3 Test pump functioning ..............................................................................................................................20
Trouble-shooting ......................................................................................................................................20
8Decommissioning - Storage - Disposal ................................................................................................... 21
General.....................................................................................................................................................21
Decommissioning......................................................................................................................................21
9Documents............................................................................................................................................ 22
Declaration of conformity.........................................................................................................................22
Wiring Diagram........................................................................................................................................23
Commissioning protocol / instruction ......................................................................................................25
Operation data sheet ................................................................................................................................26
Maintenance protocol ...............................................................................................................................26
Spare parts list, wear parts list, list of consumables...................................................................................27
10 Appendices............................................................................................................................................ 28

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Imprint:
All rights reserved
© Copyright by WDT –Werner Dosiertechnik GmbH & Co KG
Edition: see footer
Reproduction of any kind and translation into other languages, even in excerpts, are only permitted with the express
authorisation of the company WDT - Werner Dosiertechnik GmbH & Co. KG.
These operating instructions are an English translation of the original German version by the company WDT.
Responsible for the content:
Co. WDT - Werner Dosiertechnik GmbH & Co. KG
Hettlinger Str. 17
D-86637 Wertingen-Geratshofen
Phone:[phone] / 9 86 97 –0
Fax:[phone]
Email: [e-mail]

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1About these instructions / general
Scope of applicability
This manual describes the functioning, installation, commissioning and operation of the device along with the
corresponding accessories.
The Operating Instructions must be read carefully prior to use or any maintenance work, and must be kept
in close proximity to the device!
Target group
Only our authorised partners and people who have been trained in the functioning of the device are permitted
to work on the device, provided that they have read and understood this Operating Instructions.
Electrical connection work may only be carried out by appropriately trained specialists!
Symbols used
This document uses the following types of safety notices as well as general notices:
DANGER!
"DANGER" denotes a safety notice which, if disregarded, may lead to death or serious
personal injury!
CAUTION!
"CAUTION" denotes a safety notice which, if disregarded, may lead to minor or
moderate personal injury!
ESD SENSITIVE!
"ESD SENSITIVE" denotes electronic components that may be damaged by
electrostatic discharges. The generally accepted safety precautions for ESD-sensitive
devices must be observed when handling the devices!
ATTENTION!
"ATTENTION" denotes a safety notice which, if disregarded, may lead to material
damage or malfunctions!
HIGHLY FLAMMABLE!
"HIGHLY FLAMMABLE" denotes substances with a low flashpoint, under 21°C.
Tip!
A tip denotes information that might improve operational procedures.

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Warranty
All devices and systems of the Co. WDT are manufactured using state-of-the-art manufacturing methods and
are subject to a comprehensive quality control. However, should there be a reason for complaint, any
compensation claims shall be directed to the company WDT in accordance with the general terms and
conditions of warranty (see below).
General terms and conditions of warranty
The Co. WDT assumes a 2-year warranty, starting with the commissioning, up to 27 months after delivery;
subject to correct installation and commissioning with a completed and signed commissioning protocol.
Exempt from this are wear parts such as gaskets, hoses, membranes, dosing screws, electrodes, roller
supports and other parts that are subject to mechanical or chemical wear and tear. For these we assume a
warranty of 1/2 year.
Our merchandise management programme requires an invoice for each delivery (including warranty services).
When returning a defective component, upon review you will receive a corresponding credit, if applicable.
We request a return within 14 days.
The costs for subsequent damages and for the processing of warranty claims are excluded.
There are no warranty claims for damages caused by frost, water and electrical overvoltage or by improper
handling.
Tip!
For the safeguarding of any warranty claims, please send the completed commissioning
protocol together with the defective component to WDT. Without the commissioning
protocol, we reserve the right to assert a warranty regulation.
ATTENTION!
Modifications to the device are prohibited. Modifications to the device are prohibited.
In the event of any modification being made to the device the warranty and product
liability will expire!
Further information
Further information about special topics, e.g., description of the operating parameters, and additional support
is available from your specialist supplier.

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2Safety
Intended use
The DUFTDOS-DS Fragrance Dosing may only be used for the purposes indicated in Section 3.2 "Product
description"! The locally applicable regulations concerning accident prevention, occupational safety and
drinking water protection must also be observed!
Safety notices
Carefully read and comply with the operating instructions prior to installation and use of the device!
Work on the device and changes in the settings may only be carried out by properly trained and instructed
persons! The regulations concerning occupational safety and accident prevention, as well as the wearing of
protective clothing, must be observed.
Observe the warning notices on the device
2.2.1 Handling of chemicals, risks to humans and the environment
Important information concerning the handling of chemicals and fragrances can be
found in the safety data sheets provided by the fragrance manufacturer!
During fragrance dosing, a fragrance concentrate is added to the steam pipe and directed into the steam
room. The fragrance concentration in the steam is so low that there is no danger for people.
DANGER! IRRITATION!
Fragrance concentrates may cause irritation and allergic reactions.
HIGHLY FLAMMABLE!
Fragrance concentrates may be highly flammable. This may cause damage or pose a
danger to personnel and the environment. Work with care!
CAUTION!
Fragrance concentrates may be harmful to health!
Wear protective gloves and goggles.
In the event of an emergency when dealing with chemicals you can also contact the Emergency
Poison Centre!
Emergency number:
Munich Emergency Poison Centre (or any other Poison Centre)
Phone: [phone]
2.2.2 Protective measures and rules of conduct
ATTENTION!
No modifications may be made to the device. If this specification is not observed, the
warranty obligation and product liability will expire!
Each time the fragrance is refilled,
check the pump dosing hose and
renew if necessary.
(see Operating Instructions)

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3Product description - scope of delivery
Scope of delivery / accessories
The device consists essentially of the following components:
Peristaltic pump SA, approx. 3 l/h
Control system DS with rotary potentiometer, mounted in casing
Power cable with Europlug
Roller support SA yellow
Dosing hose 3.2 x 1.6 mm viton with hose bracket on 4 x 1 mm
Suction hose PE 4 x 1 mm - 1.5 m
The following optional accessories are available:
Dosing set
Console for wide-neck round can, 1.5 litres
Console for canister, 10 litres
Order numbers see Section 9.6 "Spare parts list, wear parts list, list of consumables".
Product description
Fragrance Dosing Type DUFTDOS-DS is a dosing system for the measured dosing of fragrance concentrate
into the steam pipe of steam rooms.
Function
The fragrance concentrate is dosed by the hose pump into the steam pipe via the dosing line. The dosing
cycle, consisting of dosing time and pause time, can be set individually at the control unit. The dosing time is
set inside the casing prior to commissioning. The pause time is set at the potentiometer. If the pause time is
at "0", the device is in test mode and doses continuously. Test mode is used for venting the dosing line between
the device and steam pipe. The dosing line is made from transparent PTFE, which means that the air bubbles
in the pipe can be observed during venting.
The optional dosing valve is installed in the steam pipe and is used for connecting the dosing flow.
ATTENTION!
The device must be connected in such a way that dosing only occurs when the steam
generator is producing steam.

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Overview Fragrance Dosing Type: DUFTDOS-DS
Figure 1, DUFTDOS-DS with Console
Key
1 Casing
2 Power indicator
3 Potentiometer pause time
4 Peristaltic pump
5 Transparent protective cover
6 Pressure connection for dosing line to
steam pipe
7 Console for canister, 10 litres
8 Warning notice
9 Suction connection for hose line to
fragrance concentrate container
3.2.1 Dosing unit
Fragrance dosing is performed using a hose pump, which can also reliably convey
the smallest dosing quantities, even when air bubbles are trapped in the suction
line. The rotating rollers press the dosing hose against the wall, which pushes the
liquid in the hose out from the rollers while simultaneously feeding behind it. It is
exceptionally reliable and very easy to operate.
Fragrance concentrations may be exceptionally aggressive. The dosing hose used
is resistant to most commercially-available concentrates.
ATTENTION!
The composition of fragrances varies. This may reduce the service life of the hose. The
fragrance pump must therefore be checked regularly in accordance with the
maintenance schedule, or rather each time the fragrance is refilled.
3.2.2 Control unit
The operating parameters at the rotary potentiometer can be set at the control unit. The control board is
installed in a splashproof casing.
Figure 2, Hose Pump
Functioning
2
6
7
8
3
4
1
5
9

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3.2.3 Dosing valve (option)
The valve is a combined spring-loaded check and dosing valve.
In the event of a fault in the pump or dosing line (hose rupture, maintenance work), the dosing
valve ensures that steam from the steam pipe does not enter the dosing line.
During trouble-free operation, no dosing valve is required as the pressure of the pump is higher
than the pressure in the steam pipe.
3.2.4 Console (Option)
The device is delivered for wall-mounting as standard. The fragrance container is placed on the ground.
The optional console is designed for elevated installation, so that the floor remains clear. The fragrance container is placed
on the console. The console is available in two sizes.
Device identification / nameplate
Enter the data from your device's nameplate here.
Field 1: Enter serial number
Field 2:. Enter date of manufacturing
Technical data
DUFTDOS-DS
Dimensions and weights:
External dimensions
approx. 0.18 x 0.08 x 0.14 m (HxWxD)
Space requirement
approx. 0.50 x 0.30 x 0.30 m (HxWxD)
Space requirement incl. operation and
maintenance
approx. 2.00 x 0.60 x 0.90 m (HxWxD)
Weight
approx. 0.9kg
Control
Dosing performance
1, 3, 12 or 24 ml, depending on setting
Pause time
can be set at potentiometer
Connection data
Dosing connection
Dosing hose Ø 6/4 mm
Electrical connection
230 VAC/50Hz, 25 W Europlug
Protection class
IP 44
Operating data:
Medium temperature
5-35°C
Ambient temperature utility room
5-35°C
Humidity engineering room
max. 70%
Suction height
max. 2 m
Ventilation (in and out)
Recommended in the engineering room
Operating pressure
max. 1.5 barg
Conveying capacity during continuous
operation
max. 3 l/h
Figure 3, Dosing Valve
Figure 4, Nameplate

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Transport / storage
Please check the device immediately upon receipt for potential transport damage.
ATTENTION!
The device may be damaged by frost or high temperatures. Avoid exposure to frost
during transport and storage! Do not store the device near objects with significant heat
radiation or in direct sunlight. The device may only be transported and stored in its
original packaging. Please ensure careful handling.
For transport and storage purposes, the roller support of the dosing pump is not mounted. This prevents the
hose from becoming deformed.
Storage of fragrances / chemicals
DANGER!
The safety data sheets provided by the fragrance manufacturer must be observed
during storage!
These are some of the points that must be observed:
Fragrance concentrates must only be stored in the appropriately identified original plastic containers.
Fragrance concentrates must be stored in a separate storage space.
The ambient temperature must not exceed 20 °C.
See also Section 2.2.1 "Handling of chemicals, risks to humans and the environment".
CAUTION!
Observe locally applicable regulations concerning the handling of chemicals!

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4Installation
The work activities described here must only be performed by appropriately qualified personnel belonging to
a specialist company.
Select the installation site
The installation site must have the following properties:
1. The installation site must be frost-proof.
2. The device must be protected from direct sunlight.
3. An electric power connection must be available.
4. It is recommended that the storage space should be well aerated and ventilated.
Installation instructions (suggested installation)
The device is mounted on a wall in the utility room. The dosing line to the steam pipe should be as short as
possible.
Observe the space requirement for operating and servicing the device, see Section 3.4 Technical Data.
Warning and information notices must be installed in compliance with locally applicable accident
prevention regulations at the locations provided!
Installation plan
Figure 5, Suggested Installation
Steam room
Steam pipe
Dosing line
Dosing valve
Steam generator
Interlock
DUFTDOS socket
with steam
generator

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Mechanical installation
Installing dosing device
With the exception of the roller support, the dosing device is delivered ready for operation.
The device is installed in the utility room approx. 1 m above the ground. When installed with a console, the
device can be installed at any height desired. The container with the fragrance concentrate is placed under
the device.
1. When selecting the installation site, make sure it is easily accessible.
2. Attach the device to the wall or console using 4 screws.
Hydraulic installation
ATTENTION!
Do not bend the dosing line.
Do not install the dosing line in such a way that the fragrance concentrate is unable to
flow through the steam pipe into the steam generator.
1. Screw in the dosing valve (optional) at the dosing point on the steam pipe.
2. If there is a large distance between the device installation site and the dosing valve, fit a transparent protective
tube for the dosing line.
3. Connect the dosing line to the right-hand connection of the hose pump.
4. Connect the other end of the dosing line to the steam pipe (dosing valve).
5. Connect the suction line to the left-hand connection of the hose pump.
Electric installation
DANGER DUE TO ELECTRICAL VOLTAGE!
Electrical installation must only be carried out by appropriately qualified personnel!
Before any electrical works are carried out, the device must be disconnected from the
power supply and secured against being reactivated! (Pull power plug.)
ATTENTION!
The electronic components in the devices are sensitive to electrostatic discharges. The
generally accepted safety precautions for ESD-sensitive devices must be observed when
handling the devices.
The following applies, in particular:
Connectors must only be connected or removed when the power has been deactivated.
The person handling the devices must discharge any electrostatic charge from themselves for
at least 5 seconds before touching the device directly. For example, by wearing an ESD
antistatic wrist strap connected to an earth wire.
Tip!
The dosing of the fragrance concentrate must be linked with the functioning of the
steam generator. This prevents dosing without steam. For example, interlock socket
with steam generator or via a temperature sensor located on the steam pipe.

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5Commissioning
Commissioning - comments
The work activities described here must only be performed by appropriately qualified personnel belonging to
a specialist company. Alternatively, the work can be carried out by persons who have read and understood
the entire operating instructions. Prior to commissioning, the installed systems must be checked for proper
installation and leaks.
Use the commissioning protocol when commissioning, see Section 9.3.
The device comes loaded with factory-defined settings. Set the control parameters to the desired operating
mode during commissioning.
Commissioning tasks
Ensure that the device has been correctly installed and connected.
5.2.1 Set the dosing times at the control board
1. Pull power plug.
2. Unscrew the device and pivot the casing cover downwards.
3. Set dosing times in accordance with the terminal diagram.
4. Renew the casing cover.
5. The power plug remains disconnected.
5.2.2 External control / external key operation
1. Pull power plug.
2. Unscrew the device and pivot the casing cover downwards.
External control
Terminals 3-4 can be used to connect an external control with potential-free on/off contact. For this purpose,
the jumper must be removed from 3 to 4 and the external contact must be connected. If the external control
contact is closed, the dosing pump will operate with the set dosing performance.
External key operation
An external switch with potential-free contact can be operated at terminals 3 and 4.
For this purpose, the jumper must be removed from 3 to 4 and the external switch must be connected. When
the switch is activated, a dosing impulse will operate. During this time, the light ring on the switch will be
illuminated. Once the pause time has expired, a new dosing impulse can be activated using the switch.
3. Renew the casing cover.
4. The power plug remains disconnected.

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5.2.3 Insert roller support for hose pump
1. Remove clip-on transparent protective cover (5, not depicted).
2. Remove blue retaining washer (2).
3. Remove hose bracket (15) from pump casing.
Figure 6, Hose Pump
Key
11 Pump casing
12 Retaining washer
13 Pressure connection
14 Suction connection
15 Hose bracket with dosing hose made
from viton (hose set)
16 Hose
17 Roller support (covered by retaining
washer)
- Transparent protective cover (not
depicted)
4. Place yellow roller support (17) on the shaft.
5. Insert hose bracket (15) into the casing guide until it locks in completely.
6. Turn roller support (17) anti-clockwise and press the hose carefully into
the casing until the hose sits completely in the casing.
Renew the retaining washer (12).
Reattach the transparent protective cover. The roller support is now fully
installed.
The roller support and hose bracket are disassembled in the reverse order.
Figure 7,
Insert roller support
Figure 8,
Insert hose bracket
Figure 9,
Turn roller support
12
11
13
14
15
16
17

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5.2.4 Prepare the fragrance concentrate
CAUTION!
Many fragrance concentrates are highly flammable!
CAUTION!
Fragrance concentrates may be harmful to health!
Wear protective gloves and goggles.
Observe the safety data sheet provided by the fragrance manufacturer.
1. Unscrew the cover on the fragrance concentrate container.
2. Drill a 7mm diameter hole in the cover.
3. Screw the cover back on again.
4. Place the container under the device.
5. Slide the suction line into the container so that the end of the suction line comes into contact with the
container base.
5.2.5 Activate the device and vent the dosing line
1. Insert power plug into the socket (see Section 3.4 "Technical data").
2. Set potentiometer to "0" (continuous dosing).
3. Wait until the fragrance concentrate is pumped up.
4. Wait until the fragrance concentrate being pumped up has filled the dosing line completely.
5. The dosing line has been vented when no air bubble is visible in the pipe.

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6Operation / service
General
These tasks must only be performed after the device has been successfully commissioned.
The dosing times and the launch behaviour following startup are preset during commissioning.
DANGER DUE TO ELECTRICAL VOLTAGE!
Any changes to the terminal assignment of the control board must only be carried out
in compliance with the safety instructions, see Section 2.
Terminal assignment see terminal diagram.
Control
Figure 10, Control System
Key
2 Power indicator
Green: ready for operation
3 Potentiometer pause time
Dosing begins once the device is activated, either with a pause time or a dosing time, depending on the
presetting.
When the device is ready for operation, the power indicator (2) will be illuminated green.
6.2.1 Set pause time / dosing quantity
Set the pause time for a dosing cycle (and thereby the dosing quantity) at the potentiometer (3).
When setting the dosing quantity, observe the manufacturer's specifications for the fragrance concentrate.
Tip!
Pause "0" (continuous dosing) is used to vent the dosing line.
Control System - Software
No software available
2
3

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Replenish consumables
CAUTION!
Fragrance concentrates may be harmful to health!
Wear protective gloves and goggles.
ATTENTION!
Aggressive fragrance concentrates reduce the service life of the hoses.
If possible, avoid using aggressive fragrance concentrates.
Tip!
Replenish consumables in due time. If the container is empty, air is sucked in by the
pump and the dosing line must be vented before any further operation occurs. Do not
use any aggressive fragrance concentrates that might attack the hose.
Fragrance concentrate
1. Unscrew the cover on the fragrance concentrate container.
2. Drill a 7mm diameter hole in the cover.
3. Screw the cover back on again.
4. Place the container under the device.
5. Slide the suction line into the container so that the end of the suction line comes into contact with the
container base.

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7Maintenance, care, faults
Device maintenance
We recommend that you assign a specialist firm to carry out regular maintenance.
Execute the following tasks in order to ensure reliable operation:
1. Clean the device regularly.
2. Stockpile consumables and replenish in due time.
3. Implement testing and maintenance in accordance with the maintenance protocol.
DANGER DUE TO ELECTRICAL VOLTAGE!
Before any works are carried out on the device, the device must be disconnected from
the power supply and secured against being reactivated!
7.1.1 Check / change hose set
The device requires minimal maintenance. The pump hose in the pump is subject to mechanical and chemical
stresses.
Carry out a visual inspection of the pump hose whenever the fragrance concentrate is changed in order to
identify damage in due time and renew the dosing hose.
Renew dosing hose at least every 6 months, more frequently in the case of aggressive fragrance concentrates.
Individual components peristaltic pump
Figure 11, Peristaltic pump SA, individual components
Key
5 Transparent protective cover
12 Retaining washer
15 Hose bracket
17 Roller support, yellow
11 Pump casing
21 Sealing washer felt
22 Sealing washer EPDM
23 Gear motor
24 Mounting screws
Change hose set and roller support
See description under Section 5.2 Commissioning tasks, "Roller support for hose pump"
5
12
15
11
23
24
17
21
22

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Renew hose on hose bracket
ATTENTION!
The new hose must be of the same colour and size as the disassembled hose. The hose
must not be twisted when inserted! The markings must be centred at the front (see
figure).
1. Remove hose set, see Section 7.1.1 "Check / change hose set".
2. To renew the dosing hose, cut the hose clamp with a sharp knife or pliers carefully! Do not damage the
hose stem!
3. Slide the new dosing hose onto the hose stem so that the markings on the hose ends are to the front! This
ensures that the hose is not twisted.
4. Attach the hose ends using the hose clamps and cut the protruding ends of the hose clamp off.
5. Install hose set, see Section 7.1.1 "Check / change hose set".
Figure 12, Hose Set, Individual Components
Key
16 Hose, black
15 Hose bracket
31 Marking
32 Hose clamp (2x)
7.1.2 Checking dosing valve
Certain fragrance concentrates cause deposits in the dosing line and in the dosing valve. This may interfere
with the fragrance dosing.
Check the dosing valve every 6 months or as required
1. When refilling the fragrance concentrate allow the pump to suck some air in.
2. Observe the air bubble when the fragrance pump is operating.
3. If the air bubble in the suction pressure hose is transported further, the fragrance dosing is functioning
correctly. If the air bubble moves back and forth, the dosing valve is blocked and must be cleaned.
Clean dosing valve
1. Release the dosing hose from the dosing valve.
2. Unscrew the dosing valve.
3. Wash the dosing valve out with warm water or rinse it with methylated spirit.
4. If this proves unsuccessful, renew the valve.
32
16
31
15

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7.1.3 Test pump functioning
Set the pause time to "0". The retaining washer must revolve.
Test pump suction function
1. Pull pump suction hose out of the container.
2. The pump must suck in air, which causes air bubbles in the dosing line.
If no air is being sucked in, the suction function is faulty.
3. The dosing line must then be vented. See Section 5 "Commissioning".
Trouble-shooting
CAUTION!
Fragrance concentrates may be harmful to health!
Wear protective gloves and goggles when working on the suction or dosing line.
Fault table
Fault
Possible cause
Measures
The device cannot be switched on
Power plug not connected
Power supply interrupted
Steam generator deactivated (if
connected to steam generator)
Insert power plug
Check power supply
Activate steam generator
Device not functioning
Control board jumpers incorrectly
set
Control circuit board defective
Check settings
Renew control board
Dosing pump not functioning
Pump motor faulty
Check / renew pump motor
No fragrance dosing
•Fragrance concentrate
container empty
•Air in the dosing line
•Fragrance pump faulty
•Dosing pump hose faulty
•Roller support worn-out
•Dosing valve blocked
•Fragrance concentrate
contaminated
•Refill container
•Vent dosing line with fragrance pump
•Check pump / renew
•Renew hose
•Renew roller support
•Check / clean / renew dosing valve
•Carry out a visual inspection of the
fragrance concentrate for clarity and
cleanliness. Renew contaminated
concentrate