Miele professional G 7831 User manual

Operating instructions
Washer-disinfector
G 7831
To avoid the risk of accidents or
damage to the machine it is
essential to read these instructions
before it is installed, commissioned
and used for the first time. M.-Nr. 10 504 970
en-GB

Warning and safety instructions .....................................5
Symbols on the appliance .........................................9
Intended use.....................................................10
Guide to the machine .............................................11
Caring for the environment.........................................13
Disposal of your old machine ........................................13
Opening and closing the door ......................................14
Electric door lock ..................................................14
Open the door a.................................................14
To close the door ..................................................14
To open the door with the emergency release ...........................14
Water softener ...................................................15
Programming the water softener ......................................16
Filling the salt reservoir .............................................17
Add salt indicator..................................................18
Areas of application...............................................19
Protein test .......................................................19
Loading the machine ...............................................20
Water connection spring adapter .....................................21
Dental...........................................................23
ENT ............................................................25
GYN............................................................25
Chemical processes and technology.................................26
Dispensing chemical agents........................................30
Adding rinsing agent ...............................................30
Add rinsing agent indicator ..........................................31
Setting the dosage.................................................31
Adding neutralising agent ...........................................32
Add neutralising agent indicator .....................................33
Adding cleaning agent .............................................34
Adding powder cleaning agent .......................................34
Operation .......................................................36
Switching on .....................................................36
Starting a programme ..............................................36
Selecting the Drying 0additional function ...........................36
Programme sequence indicators .....................................37
At the end of a programme ..........................................37
Contents
2

Cancelling a programme ............................................38
Programme cancellation due to a fault...............................38
Cancelling the programme manually ................................38
Switching off .....................................................38
Programmable functions...........................................39
The following applies to all programmable functions: ......................39
To activate programming mode ....................................39
To save values and exit from programming mode ......................39
To exit from programming mode without saving .......................39
Dispensing liquid cleaning agent via DOS 1.............................40
Setting the dosage concentration...................................40
Venting the dispensing system.....................................40
Buzzer ..........................................................41
Changing programme parameters ....................................42
Changing the temperature ........................................42
Changing the temperature holding time..............................43
Resetting to factory default settings ...................................43
Setting the time and date............................................44
Process documentation (optional)...................................45
Maintenance .....................................................46
Periodic checks ...................................................46
Process validation .................................................47
Routine checks ...................................................47
Cleaning the filters in the wash cabinet.................................48
Cleaning the spray arms ............................................50
Cleaning the control panel...........................................51
Cleaning the front of the machine .....................................51
Cleaning the wash cabinet ..........................................51
Cleaning the door seals.............................................51
Dispensing systems................................................51
Baskets and inserts ................................................52
Problem solving guide ............................................53
Other problems ..................................................60
Cleaning the drain pump and non-return valve...........................60
Cleaning the filters in the water inlet ...................................62
After sales service ................................................63
Installation ......................................................64
Building the machine under a continuous worktop ........................64
Contents
3

Electrical connection .............................................66
Plumbing........................................................67
Drainage ........................................................68
Technical data ...................................................69
Programme chart .................................................70
Contents
4

This washer-disinfector complies
with all relevant local and national
safety requirements. Please note
that incorrect use can lead to
personal injury and damage to
property.
To avoid the risk of accidents and
damage to the washer-disinfector,
please read these instructions
carefully before starting to use it.
Keep these instructions in a safe
place for reference, and pass them
on to any future user.
Correct application
~This washer-disinfector is designed
for use with the applications described
in these Operating Instructions only.
Alterations or conversions to the
machine or using it for purposes other
than those for which it was designed
are not permitted and could be
dangerous.
This machine must only be used for
cleaning and disinfecting instruments
or medical devices if the manufacturer
has stated that they are suitable for
machine processing. The
manufacturer's cleaning and
maintenance instructions for
instruments etc. must also be
observed. Miele cannot be held liable
for damage caused by improper or
incorrect use of the machine.
~This washer-disinfector is intended
for indoor use only.
~This machine may only be used in
non-stationary locations if a risk
assessment of the installation has been
carried out by a suitably qualified
engineer.
Please pay attention to the following
notes to avoid injury and damage.
~This washer-disinfector should be
commissioned and then maintained by
a Miele authorised and trained service
technician only. To ensure compliance
with the Medical Devices Directive, a
Miele service contract is
recommended. Unauthorised repairs
could be dangerous and jeopordise the
personal safety of the operator, for
which the manufacturer cannot be held
liable.
~Do not install the washer-disinfector
in an area where there is any danger of
explosion or of freezing conditions.
~The electrical safety of this machine
can only be guaranteed if connected to
a correctly installed earthing system on
site. It is most important that this basic
safety requirement is present and
regularly tested, and where there is any
doubt the on-site wiring system should
be inspected by a qualified electrician.
The manufacturer cannot be held liable
for damage or injury caused by the lack
of or inadequacy of an effective
earthing system (e.g. electric shock).
~A damaged or leaking machine
could be dangerous and compromise
your safety. Disconnect the machine
from the mains immediately and call the
Miele Service Department.
Warning and safety instructions
5

~Personnel operating the
washer-disinfector should be trained
regularly. Untrained personnel and
children must not be allowed access to
the machine or its controls.
~Take care when handling chemical
agents such as cleaning agent,
neutralising agent, rinsing agent etc.
These may contain irritant or corrosive
ingredients. Follow all instructions and
safety procedures carefully. Wear
protective gloves and goggles. With all
chemical agents, the manufacturer's
safety instructions and safety data
sheets must be observed.
~This washer-disinfector is designed
for operation with water and
recommended chemical agents only.
Organic solvents and flammable liquid
agents must not be used in this
machine. These could cause an
explosion, damage rubber and plastic
components in the machine, and cause
liquids to leak out of the machine.
~Avoid inhalation of powder cleaners.
These cleaning agents can cause
burning in the mouth and throat if
swallowed and can inhibit breathing.
~The water in the cabinet must not be
used as drinking water.
~Do not sit or lean on an open door.
The machine could tip up and be
damaged or cause an injury.
~Be careful when sorting items with
sharp pointed ends and positioning
them in the machine that you do not
hurt yourself or create a danger for
others. Sharp items should be placed in
baskets with the pointed ends facing
downwards.
~Please be aware that the
washer-disinfector may be operating at
high temperatures. If the door is
opened with the emergency release
cord there is a danger of burning,
scalding or chemical burning.
~Where there is a risk of toxic or
chemical substances occuring in the
suds solution (e.g. aldehyde in the
disinfecting agent), it is essential to
regularly check door seals and make
sure that the steam condenser is
functioning correctly.
Opening the machine door during a
programme interruption carries
particular risks in such circumstances.
~Should personnel accidentally come
into contact with toxic vapours or
chemical agents, follow the emergency
instructions given in the manufacturer's
safety data sheets.
~Mobile units, baskets, inserts and
loads must be allowed to cool down
before they are unloaded. Any water
remaining in containers could still be
very hot. Empty them into the wash
cabinet before taking them out.
~Do not touch the heating elements if
you open the door during or directly
after the end of a programme: you
could burn yourself. They remain hot for
some time after the end of the
programme.
~Never clean the machine or near
vicinity with a hose or a pressure
washer.
Warning and safety instructions
6

~The machine must be disconnected
from the mains electricity supply before
any maintenance or repair work is
carried out. Do not reconnect it until the
maintenance or repair work has been
successfully completed.
The following points should be
observed to assist in maintaining
quality standards when processing
medical devices, in order to protect
patients, and to avoid damage to the
loads being cleaned.
~If the washer-disinfector is being
used for disinfection in accordance with
official regulations on the control of
epidemics, the steam condenser and
its connections to and from the wash
cabinet must be cleaned and
disinfected whenever any repairs are
carried out or parts replaced.
~If it is necessary to interrupt a
programme in exceptional
circumstances, this may only be done
by authorised personnel.
~The standard of cleaning and
disinfection in the disinfection
programmes must be routinely
confirmed by the user. The process
must be thermo-electrically validated
on a regular basis, and checked
against documented control results.
~For thermal disinfection, use
temperatures and temperature holding
times to achieve the required infection
prophylaxis in accordance with current
health and safety regulations.
~Use of chemical agents could under
certain circumstances adversely affect
the components of the
washer-disinfector. Follow the
recommendations of the chemical
agent manufacturer. In the event of any
damage or material deterioration,
please contact Miele.
~Pre-treatments with cleaning or
disinfecting agents can create foam, as
can certain types of soiling and
chemical agents. Foam can have an
adverse effect on the disinfection and
cleaning result.
~Foam must not be able to escape
from the wash cabinet. It would hinder
the correct functioning of the machine.
~Check the process used regularly to
monitor foaming levels.
~To avoid the risk of damage to the
washer-disinfector and any accessories
used with it caused by chemical
agents, soiling and any reaction
between the two please read the notes
in "Chemical Processes and
Technology".
~Where a chemical agent is
recommended on technical application
grounds (e.g. a cleaning agent), this
does not imply that the manufacturer of
the machine accepts liability for the
effect of the chemical on the items
being cleaned.
Please be aware that changes in
formulation, storage conditions etc.
which may not be publicised by the
chemical manufacturer, can have a
negative effect on the cleaning result.
Warning and safety instructions
7

~When using chemical agents such
cleaning agent it is essential that the
manufacturer's instructions are
followed. Only use chemical agents for
the purpose they are designed for as
specified by the manufacturer, to the
exclusion of other chemicals, to avoid
such dangers as chemical reactions
and material damage.
~In critical applications where very
stringent requirements have to be met,
it is strongly recommended that all the
relevant factors for the process, such
as cleaning agent, water quality etc.
are discussed with Miele.
~Mobile units, baskets and inserts
should only be used for the purpose
they are designed for.
Hollow instruments must be thoroughly
cleaned, internally and externally.
~Empty any containers or utensils
before arranging them in the machine.
~Do not allow any remains of acids or
solvents, and in particular hydrochloric
acid or chloride solutions, to get into
the wash cabinet. Similarly avoid any
materials with a corrosive effect.
The presence in compounds of any
solvents should be minimal (especially
those in hazard class A1).
~Ensure that solutions or steam
containing hydrochloric acid do not
come into contact with the steel outer
casing of the machine, to avoid any
corrosion damage.
~After carrying out any work on the
mains water system, the water supply
system to the washer-disinfector must
be vented.
Otherwise, the components in the
machine may become damaged.
~Please follow the advice on
installation in these instructions and the
separate Installation Instructions.
Warning and safety instructions
8

Using accessories
~Only use genuine Miele original
accessories with this machine. Consult
Miele on the type and application of
such equipment.
~Only use Miele mobile units, baskets
and inserts in this machine. Using
accessories, mobile units and inserts
made by other manufacturers, or
making modifications to Miele
accessories, can result in
unsatisfactory cleaning and disinfecting
results, for which Miele cannot be held
liable. Any resultant damage would also
invalidate the machine guarantee.
~Only use chemical agents which
have been approved by their
manufacturer for use in the application
you are using. The chemical agent
manufacturer is responsible for any
negative influences on the material the
load is made from and for any damage
they may cause to the machine.
Symbols on the appliance
Warning:
Observe the operating
instructions.
Warning:
Danger of electric shock.
Disposing of your old machine
~Please note that the machine may
have contamination from blood or other
bodily fluids in it and must be
decontaminated before disposal.
For environmental and safety reasons,
ensure the machine is completely
drained of any residual water, chemical
residues and cleaning agent. Observe
safety regulations and wear safety
goggles and gloves.
Make the door lock inoperable, so that
children cannot accidentally shut
themselves in. Then make appropriate
arrangements for the safe disposal of
the appliance.
The manufacturer cannot be held
liable for damage caused by
non-compliance with these Warning
and Safety instructions.
Warning and safety instructions
9

This washer-disinfector can be used to
clean, rinse, thermally disinfect and dry
a wide range of reusable medical
devices used in dental, ENT and
gynacological surgery.
Follow the manufacturer's instructions
(according to EN ISO 17664) on how to
process their items by machine.
Areas of application:
Instruments and accessories from:
–dental medicine,
–gynaecology,
– ear, nose and throat medicine.
Processing instruments by machine
achieves reproducible results and
should be used in preference to
processing them by hand.
Where disinfection is required for the
protection of personnel and patients,
carry out thermal disinfection, e.g.
using the DESIN vario TD programme.
The parameters for thermal disinfection
according to EN ISO 15883-1 (A0
concept) vary depending on the
disinfection standard required. They
are 80 °C (+ 5 °C, - 0 °C) with a 10 min
holding time (A0600) or 90 °C (+ 5 °C,
- 0 °C) with a 5 min holding time (A0
3000). An A0value of 3000 is suitable
for deactivating the HBV virus.
National health and safety regulations
regarding disinfection must also be
observed.
The cleaning programme as well as any
chemical agents must be chosen
according to the type of soiling and
load being processed and to suit the
level of cleaning required.
The cleaning result must ensure that
the instruments can be disinfected
correctly, that no residues are left
behind, that subsequent sterilisation
can be carried out and that the
instruments can be used again safely.
Medical devices are best reprocessed
using the DESIN vario TD programme.
The use of a suitable carrier (basket,
module, insert etc.) is important to
ensure the adequate cleaning of the
load. Examples are given in the section
"Areas of application".
The machine complies with EN ISO
15883 for validation purposes.
Intended use
10

aOn/Off switch I-0
bDoor release a
cDisplay
dßbutton to switch between the
displays for:
- actual temperature
- elapsed time
- current block
eDrying button 0with indicator light
fStart button 6with indicator light
gProgramme sequence indicators:
kReactivation
IPre-wash
lMain wash
HRinse / Final rinse
cDrying
rProgramme finished
hCheck/Fault indicators:
p/6Inlet/drain
kAdd salt
wAdd neutralising agent
HAdd rinsing agent
8DOS optical interface for
service technician;
Add liquid cleaning agent
indicator when connected
toaK60DOSmodule.
iProgramme selector
fStop
AFreely programmable
programme
EUniversal
DPre-rinse
qDrain
varioTD
SPECIAL 93°C-10'
Guide to the machine
11

aConnection for DOS module K 60 at
the rear of the machine
bFilter combination
cSalt reservoir
dNeutralising agent reservoir (with
dosage selector)
eLevel indicator for rinsing agent
fDispenser for powder cleaning agent
gRinsing agent reservoir (with dosage
selector)
Optional:
Interface connector RS 232 at the rear
of the machine
Guide to the machine
12

Disposal of the packing
material
The transport and protective packing
has been selected from materials which
are environmentally friendly for disposal
and should be recycled.
Ensure that any plastic wrappings,
bags etc. are disposed of safely and
kept out of the reach of babies and
young children. Danger of suffocation.
Disposal of your old machine
Electrical and electronic machines
often contain materials which, if
handled or disposed of incorrectly,
could be potentially hazardous to
human health and to the environment.
They are, however, essential for the
correct functioning of your machine.
Please do not therefore dispose of it
with your general waste.
Please dispose of it at your local
community waste collection / recycling
centre or contact your dealer for
advice. Ensure that it presents no
danger to children while being stored
for disposal.
Caring for the environment
13

Electric door lock
This machine is equipped with an
electric door lock.
The door can only be opened when:
^the electricity supply to the machine
is switched on and
^the On-Off switch I-0 is pressed in.
Open the door a
^Press the door button in as far as it
will go, and at the same time grip the
handle and open the door.
,Do not touch the heating
elements if you open the door during
or directly after the end of a
programme; you could burn
yourself. They remain hot for some
time after the end of the programme.
After the first intake of water it is no
longer possible to open the door. The
door remains locked until the end of the
programme. It is still possible to open
the door during the PRE-RINSE Dand
DRAIN 6programmes.
The machine can be programmed (by a
Miele approved service technician) to
open during "Drying".
To close the door
Lift the door upwards and push until it
clicks shut. Do not press the door
release button whilst shutting the door.
To open the door with the
emergency release
The emergency release should only
be used when the door cannot be
opened normally, e.g. in the event of
a power failure.
Important note for SPECIAL
programmes - read the notes in the
Warning and Safety instructions.
There is a danger of burning,
scalding and chemical burning if the
door is opened using the
emergency door release cord.
^Turn the programme selector to f.
^Switch the machine off with the I-0
switch.
^Pull down the emergency release
cord behind the door outer panel.
Opening and closing the door
14

In order to achieve good cleaning
results, the washer-disinfector needs to
operate with soft water. Hard water
results in the build-up of calcium
deposits on instruments, etc, and in the
washer-disinfector.
Mains water with a hardness level
higher than 0.7 mmol/l (4 °dH – German
scale) needs to be softened. This takes
place automatically in the integrated
water softener.
–The water softener requires
reactivation salt.
–The washer-disinfector must be
programmed to correspond to the
water hardness in your area.
– Your local water authority will be able
to advise you on the water hardness
in your area.
Where the water hardness fluctuates
e.g. between 1.4 - 3.1 mmol/l (8 -
17 °dH German scale) always
programme the washer-disinfector to
the higher value (3.1 mmol/l in this
example).
The built-in water softener has
settings from 1 °dH -35 °dH (0.2 -
6.3 mmol/l).
If the water hardness level exceeds
35 °dH or 6.3 mmol/l then a water
softening system, e.g. the Miele
"Aqua-Soft system G 7897", should be
considered.
In the event of a fault, it will help the
service technician if you know the
hardness of your local water supply.
Enter the water hardness below:
°dH / mmol/l
Water softener
15

Table of settings
°dH mmol/l °f Setting
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
0.2
0.4
0.5
0.7
0.9
1.1
1.3
1.4
1.6
1.8
2.0
2.2
2.3
2.5
2.7
2.9
3.1
3.2
3.4
3.6
3.8
4.0
4.1
4.3
4.5
4.7.
4.9
5.0
5.2
5.4
5.6
5.8
5.9
6.1
6.3
2
4
5
7
9
11
13
14
16
18
20
22
23
25
27
29
31
32
34
36
38
40
41
43
45
47
49
50
52
54
56
58
59
61
63
0*)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 **)
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
*) The "0" setting is only for machines which
do not have a water softener
**) Factory default setting
Programming the water
softener
^Switch off the machine.
^Turn the programme selector to f.
^Press ßand 6at the same time,
hold them in and, whilst doing so,
switch the machine on with the I-0
switch.
The current programme status P.... will
appear in the display.
The indicator light p/6will come on.
^Press 0once.
E01 will appear in the display.
^Turn the programme selector one
switch position clockwise (1 o'clock
position).
The number 19 will appear in the
display (the factory water hardness
default setting in °dH, equivalent to
3.4 mmol/l).
^Press ßas many times as is
necessary, or hold it in until the
required value (degree of hardness
in °dH) appears in the display.
Once the number 35 has been
reached, the counter will begin again at
0.
^Press 6.
SP will appear in the display.
^Press 6again.
The setting will now be stored in
memory. The display will clear.
The machine is now ready for use.
Water softener
16

Filling the salt reservoir
Only use special coarse grained
reactivation salt with granules of
approx. 1-4 mm. Do not use other types
of salt such as cooking salt, agricultural
grade or gritting salt. These may
contain insoluble additives which can
impair the functioning of the water
softener. If in doubt consult the Miele
Professional Department.
The salt reservoir holds approx.
1.2 kg of salt.
,Inadvertently filling the salt
reservoir with cleaning agent will
damage the water softener.
Before filling the salt reservoir make
sure that you have picked up the
right packet of reactivation salt.
^Remove the bottom basket from the
machine.
^Unscrew the salt reservoir cap.
Before filling the salt reservoir with
reactivation salt for the first time, you
must fill it with approx. 1 litre of
water to enable the salt to dissolve.
Once the washer-disinfector has
been used, there is always sufficient
water in the reservoir.
^Place the funnel provided in place.
^Fill carefully with salt.
As it is poured in, displaced water will
run out.
Water softener
17

^Remove the funnel and wipe any
residual salt off the seal and the
screw threads on the socket.
^Screw the cap back on firmly.
^Run the PRE-RINSE Dprogramme to
remove any traces of salt from the
cabinet.
The programme sequence may be
delayed for a few minutes after the
start of the PRE-RINSE D
programme. This is not a fault. The
water softener is being reactivated.
Add salt indicator
Reactivation takes place automatically
during a programme.
The programme sequence indicator
light aklights up whilst this is
happening.
^Add salt when the Add salt bk
indicator lights up.
Water softener
18

This washer-disinfector normally
requires an upper and a lower basket.
Various inserts and special baskets are
also available for a wide variety of
instruments and utensils.
Select baskets and inserts which are
appropriate for the application.
Notes on the individual areas of
application and examples of loading
are given on the following pages.
Before starting a programme you
should carry out a visual check on
the following:
– Is everything correctly
loaded/connected for cleaning?
– Are the lumen or necks of hollow
instruments positioned so that water
can access them unhindered?
– Are the spray arms clean and do
they rotate freely?
–Are the filters clean? Remove any
coarse soiling and clean them
properly if necessary.
–Is the adapter connecting the water
supply to the spray arms/jets
correctly connected?
–Are all chemical containers filled
sufficiently?
At the end of each programme:
–Carry out a visual check of the load
for cleanliness.
–Check that all hollow shafted
instruments are still securely located
on their jets.
,Any hollow instruments that have
become disconnected from their
adapters during processing must be
re-processed.
–Check that the lumen of hollow
instruments are free of obstruction.
– Check that jets and connectors are
securely held in position in the
baskets or inserts.
Protein test
Cleaning results should be subjected to
periodic protein tests, e.g. with the
Miele test kit.
Areas of application
19

Loading the machine
–Arrange the load so that water can
access all surfaces. This ensures
that they get properly cleaned.
–Do not place items to be cleaned
inside other pieces where they may
be concealed.
–Hollow instruments must be
throughly cleaned, internally and
externally.
–Ensure that instruments with long
narrow hollow sections can be
flushed through properly before
placing them in inserts or connecting
them to jets.
– Hollow vessels should be inverted
and placed in the correct baskets
and inserts to ensure that water can
flow in and out of them unrestricted.
– Deep-sided items should be placed
at an angle to make sure water runs
off them freely.
–Tall, narrow, hollow items should be
placed in the centre of the baskets to
ensure better water coverage.
–Lightweight items should be secured
with a cover net (e.g. an A 6) and
small items placed in a mesh tray to
prevent them blocking the spray
arms.
–Mobile units or baskets with an
adapter must engage correctly.
–The spray arms must not be blocked
by items which are too tall or which
hang down in their path.
–It is advisable to use instruments
made of surgical steel only, as these
are not susceptible to corrosion.
–Nickel plated instruments and
coloured anodised aluminium
instruments are not suitable for
machine processing.
–Plastic items must be thermally
stable.
–Disposable instruments must not be
processed in the machine.
Preparing the load
^Empty all containers before loading
into the machine (paying particular
attention to regulations regarding
infectious diseases and epidemics).
,Ensure that acids and residual
solvents, especially hydrochloric
acid or chlorides, do not get into the
wash cabinet.
Loading instruments
Contaminated instruments can be
placed directly in the machine without
pre-treatment (no soaking required).
Areas of application
20