MELAG MELAdem 47 User manual

User Manual
MELAdem® 47
Reverse osmosis unit
EN
Dear customer,
We thank you for your confidence demonstrated by the purchase of this MELAG product. As an owner-run and operated
family concern founded in 1951, we have a long history of successful specialization in hygiene products for practice-
based use. Our focus on innovation, quality and the highest standards of operational reliability has established MELAG
as the world’s leading manufacturer in the instrument reprocessing and hygiene field.
You, our customer are justified in your demand for the best products, quality and reliability. Providing “competence in
hygiene” and “Quality – made in Germany”, we guarantee that these demands will be met. Our certified quality man-
agement system is subject to close monitoring: one instrument to this end is our annual multi-day audit conducted in ac-
cordance with ENISO13485. This guarantees that all MELAG products are manufactured and tested in accordance with
strict quality criteria.
The MELAG management and team.

Contents
Contents
1 General guidelines ...............................................................................................................................................................4
Symbols used.......................................................................................................................................................................4
Formatting rules ...................................................................................................................................................................4
Disposal ...............................................................................................................................................................................4
2 Safety.....................................................................................................................................................................................5
3 Description of the device.....................................................................................................................................................6
Intended use ........................................................................................................................................................................6
Mode of functioning..............................................................................................................................................................6
Scope of delivery..................................................................................................................................................................7
View of the device ................................................................................................................................................................7
4 Setup and installation ..........................................................................................................................................................8
Installation location...............................................................................................................................................................8
Cold water connection..........................................................................................................................................................8
Assembly..............................................................................................................................................................................9
Connecting the device........................................................................................................................................................13
5 Commissioning...................................................................................................................................................................19
6 Maintenance........................................................................................................................................................................20
Maintenance intervals ........................................................................................................................................................20
Operating pauses...............................................................................................................................................................20
Removing and attaching the filter containers .....................................................................................................................21
Change the fine filter ..........................................................................................................................................................22
Changing the activated carbon filter...................................................................................................................................23
Replacing the mixed-bed resin cartridge............................................................................................................................24
7 Technical data ....................................................................................................................................................................25
8 Accessories and spare parts ............................................................................................................................................26
Glossary .................................................................................................................................................................................27

1 General guidelines
4
1 General guidelines
Please read this user manual carefully before commissioning the device. The manual includes important
safety instructions. Make sure that you always have access to digital or printed version of the user manual.
Should the manual no longer be legible, is damaged or has been lost, you can download a new copy from
MELAG download centre at www.melag.com.
Symbols used
Symbol Explanation
Indicates a dangerous situation, which if not avoided, could entail slight to life-
threatening injuries.
Draws your attention to a situation, which if not avoided, could result in damage to the
instruments, the practice fittings or the device.
Draws your attention to important information.
Formatting rules
Example Explanation
see Chapter 2 Reference to another text section within this document.
Disposal
MELAG devices are synonymous with high quality and a long life-span. When you eventually need to de-
commission your MELAG device, the required disposal of the device can take place with MELAG in Berlin.
Dispose of accessories and consumption media which you no longer require in the appropriate manner.
Comply with all relevant disposal specification in terms of possibly contaminated waste.
The packaging protects the device against transport damage. The packaging materials have been selec-
ted for their environmentally-friendly disposability and can be recycled. Returning the packaging to the ma-
terial flow reduces the amount of waste and saves raw materials.

2 Safety
5
2 Safety
When operating the device, comply with the following safety instructions as well as those
contained in subsequent chapters. Use the device only for the purpose specified in these
instructions. Failure to comply with the safety instructions can result in injury and/or damage to
the device.
Setup, installation and commissioning
nCheck the device after unpacking for any damage suffered during transport.
nWe recommend that the device only be setup, installed and commissioned by MELAG authorised per-
sons.
nInstall and operate the device in a frost-free environment.
Storage and transport
nStore and transport the device frost-free.
nAvoid strong shocks/vibrations.
nStore the device in a fashion protected against moisture.
Daily operation
nUse only original MELAG accessories or those from other stockists authorized for use by MELAG.
nNever operate the device unattended. Unsupervised operation of the device can result in damage to
the device or your facility. In such a case, MELAG does not accept any liability.
Leaks
nClose the water intake upon detecting a leak. Check all hoses and hose connections for leaks.
nOnly original MELAG spare parts may be used.

3 Description of the device
6
3 Description of the device
Intended use
The water treatment unit with ion exchanger permits the production of demineralised (deionised) water.
This requires tap water of drinking water quality.
PLEASE NOTE
The water treatment unit does not provide low-germ water.
The water treatment unit is suitable for the supply of one or more small steam sterilizers with feed water.
Furthermore demineralised water can be extracted, e.g. with the delivered removal valve. The water treat-
ment unit is intended for use in the medical field, e.g. in clinics, medical and dental practices and other
medical care facilities outside the patient environment.
The water treatment unit MELAdem 47 is not a medical device within the meaning of European Regulation
2017/745 on medical devices.
Mode of functioning
The water treatment unit works on the principle of reverse osmosis (reverse osmosis unit). This process
presses water through a semi-permeable RO membrane (osmosis module), reducing the salt content of
the cold water by some 95%. The inflowing water is separated into two flows:
▪ water with a low salt content (permeate)
▪ water with increased levels of salt (concentrate) which is disposed of via the outflow
An ion exchanger filled with mixed-bed resin is installed after the reverse osmosis unit to achieve the level
of water quality necessary for operation of the steam sterilizer, even with poor quality cold water. The ion
exchanger reduces the residual salt content of the permeate to a minimum. The permeate thus produced
is saved in the pressure tank, which is connected to the steam sterilizer via a hose. The cold water inflow
is switched off automatically when the pressure tank filled. All operating runs of the device are automatical-
ly controlled via its water pressure.
The permeate can be drawn through a separate removal valve for other uses.
The device can be can be connected directly with the following steam sterilizers for automatic water feed:
▪ Combination steam sterilizers (Careclave 618 using the MELAG pressure increase pump)
▪ Premium-Plus Class Evolution (Vacuklav 40 B+ Evolution, 41 B+ Evolution, 43 B+ Evolution, 44 B+
Evolution)
▪ Premium-Plus-Class (Vacuklav 40 B+, 41 B+, 43 B+, 44 B+)
▪ Premium-Class (Vacuklav 40-B, 41-B, 43-B, 44-B)
▪ Pro-Class (Vacuklav 23 B+, 24 B+, 24 BL+, 30 B+, 31 B+)
▪ S-Class (Euroklav 23 VS+, 29 VS+, 23 S+)
▪ Classic models (Vacuklav 23-B, 24-B, 24-B/L, 30-B, 31-B, Euroklav 23V-S, 29V-S, 23-S, 29-S)

3 Description of the device
7
Scope of delivery
Please check the scope of delivery before setting up and connecting the device.
Standard scope of delivery
▪ MELAdem 47
▪ User manual
▪ Record of installation and setup
▪ Warranty certificate
▪ Pressure tank
▪ Hose (black, 6mm)
▪ Removal valve
▪ Water inflow hose (2.5m)
▪ Connection set MELAdem47 (Filter for MELAdem incl.)
▪ Container key
View of the device
Depth: 18 cm
To the wastewater
connection of the steam
sterilizer
To the feed water connection
of the steam sterilizer
46 cm
40 cm
28 cm Ø 6 mm
Ø 1.5 - 3 cm
40 cm
Ø 6 mm
1234
67
8
5
Pos. Designation Description
1 Fine filter (pre-filter) Holds back all particulate material, rust and other soiling.
2 Activated carbon filter Removes free chlorine which can destroy the RO membrane in the
reverse osmosis unit.
3 Osmosis module The core of the reverse osmosis unit.
4 Ion exchanger Performs the demineralisation of the water from the osmosis module.
5 Pressure tank The permeate is collected here. The steam sterilizer is supplied with
feed water from the pressure tank.
6 Outlet hose The concentrate from the device is fed into the wastewater via the
outlet hose.
7 Wastewater connection The connection set is used to install the outlet hose of the reverse
osmosis unit and the outlet hose of the steam sterilizer to the building-
side outlet (e.g. sink siphon).
8 Removal valve Demineralised water is extracted for general use at the removal valve.

4 Setup and installation
8
4 Setup and installation
Installation location
uInstall the device in a clean, frost-free location that can be ventilated.
uThe installation location must permit careful installation, operation and maintenance.
uInstall the device in the proximity of a sink (e.g. in a sink floor unit) to facilitate connection to the cold
water line and the outflow.
uConnect the components in accordance with the installation plan (see View of the device [}page7]).
uA cut-off valve with a backflow preventer and a 3/4“ external thread connection should be installed in
close proximity to the installation location.
uTo ensure safe operation of the water treatment unit, the water pressure on the building side must be
between 2-6 bar.
uThe on-site requirements include proximity to an outlet line with a 1” external thread connection
(preferably a washing machine connection and then the sink siphon).
uMake sure that the temperature along the inlet hose does not rise above 40°C.
uIf the room in which the device is installed does not have a floor drain, a leakage water detector (water
stop, art. no. ME01056) is recommended, which shuts off the water supply in the event of damage via
a moisture sensor on the floor and with the aid of a solenoid valve.
Cold water connection
PLEASE NOTE
MELAG recommends connecting the water treatment unit directly to the drinking water.
Connecting water purification systems or filters that work with oxidants (e.g. chlorine)
upstream can affect the osmosis module and thus impair the performance of the water
treatment unit.
Increased requirements can be placed on the quality of the DI water (e.g. a low endotoxin content) for the
reprocessing of certain medical devices such as ophthalmic instruments. Comply with the following:
uIn such cases, an additional filter system is required for the reprocessing of DI water.
uIt is possible that the drinking water has been contaminated by the water installation. This includes the
domestic installation and pre-device periphery.
uArrange for a check of the drinking water quality at the removal point or request a report (e.g. from the
building management) before setting up and installing the device.
uFurther information is available from the corresponding trade associations and their publications. If in
doubt, contact your stockist or the pertinent professional association.
PLEASE NOTE
The yield (capacity) is an approximate guide value that depends on other factors in
addition to the water hardness. An upstream softening system with regeneration based
on common salt can lead to a reduction in the capacity of the MELAdem 47, regardless of
the set initial water hardness.
PLEASE NOTE
In case of increased water demand, e.g. when used with Careclave or when supplying
several steam sterilizers, it may be necessary to connect a pressure increase pump (art.
no. ME22500) upstream if the line pressure is low.

4 Setup and installation
9
The inlet of the water treatment unit is connected to a water tap with a ¾” pipe thread. The water inflow tap
must be fitted with a backflow preventer and a pipe aerator, to prevent the water from returning to the mu-
nicipal water system. Close the water tap at night, when it is out of use for several weeks and during repair
or maintenance work.
PLEASE NOTE
To prevent water damage, MELAG recommends the use of a leakage water detector e.g.
the MELAG water stop.
To ensure a standard-compliant connection of the water treatment unit with backflow preventer and a pipe
aerator independently of the building-side installation, MELAG recommends:
Method 1
}Installation of a separate water pipe (nominal width
DN15 with 1/2” socket) and installation of a water tap
with integrated safety combination (pos.a, art. no.
ME37310).
a
Method 2
}Installation of a cold water connection (e.g. a sink)
with an angle valve (pos.a) and pipe (pos.b, 10mm)
and the installation of an additional water inflow tap
with an integrated safety combination (pos.c, art. no.
ME58130) through direct assembly on the angle valve
already present.
c
b
a
Assembly
When planning the installation of the device, ensure sufficient space for the modules, a filter change, the
cover hood and the pipe connections. The module mounting is fixed in the desired position using the two
mounting drillholes.
The pressure tank can be installed anywhere in proximity to the steam sterilizer.
Using the manometer included in the scope of delivery, set the primary pressure on the valve on the un-
derside of the container to 0.4-0.5bar:
1. Primary pressure too high: Reduce the pressure by pushing in the valve tappet.
2. Primary pressure too low: Increase the pressure with the help of an air pump.

4 Setup and installation
10
Installing the removal valve
When positioning the removal valve, make sure that the normal water tap remains easily accessible.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1 Removal valve
2 Operating lever
3 Foot
4 Small rubber disc, black
5 Metal disc, white
6 Rubber disc, black
7 Tabletop
8 Bracket disc
9 Toothed lock washer
10 Nut
11 Reinforcing sleeve
12 Crimp
13 Union nut
14 Connection hose, 6mm
(permeate inflow pipe)
1. Drill a hole (Ø12mm) at the desired position on the
worktop.
2. Push the small black rubber disc (pos.4), the white
metal disc (pos.5) and the large black rubber disc
(pos.6) as close as possible to the removal valve
from below.
4
5
6
3. Insert the removal valve from above into the hole in
the worktop.
4. Position the removal valve so that it is ready for
use.