Miele G 7804 User manual

Operating instructions
Washer-disinfector
G 7804
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. 05 841 051
en - GB, AUS

Description of the machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Guide to the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Warning and Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Caring for the environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Disposal of your old appliance .......................................13
Opening and closing the door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electro-thermal door lock............................................14
To open the door a...............................................14
To close the door ..................................................14
To open the door with the emergency release ...........................15
Water softener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Setting the water softener ...........................................16
Filling the salt reservoir .............................................18
Salt indicator .....................................................19
Adding neutralising or rinsing agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Neutralising agent (factory setting) ....................................20
Adding neutralising agent ........................................20
Rinsing agent.....................................................21
Adding Rinsing agent ............................................21
Setting the dosage.................................................22
Adding neutralising agent (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Adding cleaning agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Maintenance of the dispensing system .................................25
Loading the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Loading the machine ...............................................26
Adjusting the top basket ............................................30
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Switching on .....................................................31
Starting a programme............................................31
Changing a programme ..........................................32
Selecting an additional function ....................................32
Programme sequence display .....................................32
Programme end ................................................32
Switching off .....................................................33
To cancel a programme ............................................33
Contents
2

Programming special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
1. Rinse 2 ........................................................34
2. Altering the temperature and/or the temperature holding time in the “Main wash”
and “Final rinse” programme stages ...................................35
3. Venting and setting the dosage on "DOS modules G 60 and C 60" (optional
extra) ...........................................................37
4. Delay start and setting the delay start time ............................38
5. Audible tone (Buzzer) ............................................39
6. Re-setting all parameter changes back to the factory settings. ............40
Cleaning and care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Cleaning the filters in the wash cabinet.................................41
Cleaning the spray arms ............................................43
Cleaning the drain pump and non-return valve...........................44
Cleaning the filters in the water inlet ...................................45
Cleaning the control panel...........................................45
Cleaning the front of the machine .....................................45
Correcting minor faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Faults / possible causes .............................................46
After Sales Service.................................................47
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Plumbing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Connection to the water inlet .........................................52
Drainage ........................................................54
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Programme chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Contents
3

The G 7804 washer disinfector is a front
loading machine designed specifically
for processing laboratory utensils and
glassware.
In general these include glass, heat
tolerant plastic, stainless steel and
coated metal items such as containers
(e.g. beakers, narrow necked and
conical flasks, Erlenmeyer flasks,
bottles, test tubes, separatory funnels
etc.), measuring vessels (e.g.
volumetric flasks, measuring cylinders,
pipettes etc.), dishes (e.g. Petri dishes,
mortars, watch glasses etc.) and small
components (e.g. stoppers, spatula,
stirrers etc.).
The main aim of processing laboratory
utensils and glassware is to remove
contamination from both external and
internal surfaces and to rinse off any
cleaning and neutralising agents.
The G 7804 is designed to process one
batch at a time. Items are loaded into
inserts and mobile units which are then
pushed into the wash cabinet. The door
is then closed and the programme is
started manually. At the end of the
programme the operator opens the
door, removes the mobile unit and
inserts and unloads the items.
The G 7804 is a single cabinet system
in which the whole process takes place,
including the pre-wash, main wash,
neutralisation, interim and final rinses.
Drying can be selected as an additional
function to complete the process. Each
programme stage follows on
automatically after the previous one.
The main wash, neutralising and rinse
stages are all carried out using water
based agents only. In other words
using cold, hot or fully demineralised
water with the addition of a suitable
chemical agent (cleaning agent or
neutralising agent). Other liquid agents
such as organic solvents or
combustible agents must not be used
in this machine.
Before processing anything in this
machine make sure that it is suitable for
machine processing and that it is for
example heat, acid and alkali tolerant.
It is the user’s responsibility to decide
whether items contaminated with
substances such as micro biological
material, pathogenic cells, facultative
pathogenic cells, genetically modified
material etc. should be sterilised before
machine processing.
Description of the machine
4

aOn/Off button (I-0)
bDoor release
cDisplay
dDelay start indicator light
eDrying indicator light
fProgramme start indicator light
gStart button
hDrying button
iButton to toggle between the actual
temperature and elapsed time
jAdd (liquid) cleaning agent
indicator light *
Optical interface for
service technician
kAdd rinsing agent indicator light
lAdd neutralising agent indicator light
mAdd salt indicator light
nWater inlet / Drain indicator light
oProgramme sequence display
pProgramme selector
* only applies to machine fitted with
optional external DOS-Module
Guide to the machine
5

aConnections for DOS module
Optional dispenser pump for
liquid cleaning agent and for
neutralising agent
- at the back of the machine -
bFilter combination
cSalt container
(for the water softener)
dDispenser for powder cleaning agent
eDuo dispenser for neutralising agent
or rinsing agent (with dosage
selector)
fLevel indicators
Guide to the machine
6

This machine complies with all
relevant local and national safety
requirements. Incorrect use can,
however, lead to personal injury and
damage to property.
To avoid the risk of accidents and
damage to the machine please read
these instructions carefully before
starting to use it.
They contain important notes on the
installation, safety, operation and
care of the machine.
Keep these instructions in a safe
place for reference, and pass them
on to any future user.
Correct application
~This machine is designed for use, as
described in these operating
instructions only. Alterations to the
machine, or using it for purposes other
than those for which it is designed, are
unauthorised and could be dangerous.
The manufacturer cannot be held liable
for damage caused by improper or
incorrect use of the machine.
~This machine is not intended for use
by persons (including children) with
reduced physical, sensory or mental
capabilities, or lack of experience and
knowledge, unless they have been
given supervision or instruction
concerning its use by a person
responsible for their safety.
~Personnel operating the machine
should be trained regularly. Untrained
personnel should not be allowed
access to the machine or its controls.
~The special inserts should only be
used for their specific application.
Technical safety
~Before setting up the machine,
check it for any externally visible
damage. Under no circumstances
should you use it if it has been
damaged. A damaged machine is
dangerous.
~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).
Warning and Safety instructions
7

~Please follow the advice on
installation in these instructions and the
separate Installation drawing.
~Before connecting the machine to
the mains supply, make sure the rating
on the data plate corresponds to the
voltage and frequency of the on-site
supply. Consult a qualified electrician if
in any doubt.
~A damaged machine is dangerous.
Switch off at the mains immediately and
call the Miele Service Department or an
authorised Miele Service Dealer.
~Installation, maintenance and
repairs should only be carried out by a
suitably qualified and competent
person in accordance with local and
national safety regulations.
Repairs and other work by unqualified
persons could be dangerous and the
manufacturer will not be held liable.
Ensure current is not supplied to the
machine until after installation,
maintenance or repair work has been
carried out.
~If the connection cable is damaged,
it must be replaced by a Miele
approved service technician.
~This machine should be
commissioned and then maintained by
a Miele authorised and trained service
technician or other suitably qualified
and competent approved person.
Repairs and other work by unqualified
persons could be dangerous.
~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.
~For safety reasons, this machine
may only be used when it has been
fully installed.
~Never open the casing. Tampering
with electrical connections or
components and mechanical parts is
highly dangerous to the user and can
cause operational faults.
~Faulty components must only be
replaced by genuine Miele original
parts. The manufacturer can only
guarantee the safety of the appliance
when Miele replacement parts are
used.
~Do not connect the machine to the
mains electricity supply by a
multi-socket unit or an extension lead.
These do not guarantee the required
safety of the machine (e.g. danger of
overheating).
Warning and Safety instructions
8

~During installation, maintenance and
repair work, the machine must be
disconnected from the mains electricity
supply. It is only completely isolated
from the electricity supply when:
–the mains fuse is disconnected,
–the screw-out fuse is removed (in
countries where this is applicable),
–it is switched off at the wall socket
and the plug is withdrawn from the
socket, or it is switched off at the
isolator.
Correct usage
~Take great care when handling
liquid agents and additives. These may
contain irritant or corrosive ingredients.
Do not use organic solvents as these
could cause an explosion.
Follow all relevant safety procedures
carefully. Wear protective gloves and
goggles. With all chemical agents, the
manufacturer's safety instructions must
be observed.
~The water in the machine must not
be used as drinking water.
~Only use detergents formulated for
commercial dishwashers. Do not use
washing-up liquid. Using unsuitable
cleaning agents could adversely affect
the components of the machine, as well
as items being cleaned.
~Avoid inhalation of powder cleaning
agents. They can cause burning in the
mouth and throat if swallowed, and can
inhibit breathing.
~Only use low-foaming cleaning
agents. Incorrect cleaning agents, as
well as some types of soiling can cause
a build-up of foam in the machine.
Foam can have an adverse effect on
the cleaning process.
~Please be aware that changes in
formulation, storage conditions etc,
which may not be publicised by the
chemical producer, can have a
negative effect on the cleaning result.
~Where a chemical additive 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
9

~When using cleaning agents and
specialised products, it is essential that
the manufacturer's instructions are
followed. Only use such chemicals for
the purpose and in the situation
specifed, 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 the Miele
Application Technology specialists.
~If cleaning and rinsing results are
subject to particularly stringent
requirements (e.g. chemical analysis,
specialised industrial processes etc.), a
regular quality control test must be
carried out by the user to ensure that
the required standards of cleanliness
are being achieved.
~The machine is designed for
operation with water and additive
cleaning agents only. Organic solvents
must not be used in this machine, as
there is the danger under certain
circumstances of explosion. (Although
this is not the case with all organic
solvents, other problems could arise
with their use, for example damage to
rubber and synthetic materials).
~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).
~Never clean the machine or near
vicinity with a water hose or a high
pressure hose.
~To avoid any corrosion damage,
ensure that solutions or steam
containing hydrochloric acid do not
come into contact with the steel outer
casing of the machine.
~To prevent the risk of damage to
plumbing connections air must be bled
out of the supply pipes to this
dishwasher after any plumbing work.
~While the machine is under
guarantee, repairs should only be
undertaken by a service technician
authorised by the manufacturer.
Otherwise the guarantee will be
invalidated.
Warning and Safety instructions
10

~Do not sit or lean on the opened
door. This could cause the machine to
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 knives, forks etc. should
be placed in baskets with the pointed
ends facing downwards.
~When using this machine in the
higher temperature ranges be
especially careful not to scald or burn
yourself when opening the door.
Baskets and inserts 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
or the heated surfaces on the wash
cabinet floor 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.
~Empty any containers or utensils
before arranging them in the machine.
Installation
~This machine may only be used in
mobile installations such as ships,
caravans, aircraft etc. if a risk
assessment of the installation has been
carried out by a suitably qualified
engineer.
~Do not install the machine in an area
where there is any danger of explosion
or of freezing conditions.
Safety with children
~This machine is not a toy! Keep
children away from it at all times and
supervise them whilst you are using it.
~Older children should only be
allowed to use it unsupervised if its
operation has been clearly explained to
them and they are able to use it safely,
recognising the dangers of misuse.
~This machine is not a toy. Do not
allow children to play in or around it or
to operate it. There is a danger that
they could injure themselves or get into
the machine and lock themselves in.
Warning and Safety instructions
11

Accessories
~Only use genuine Miele spare parts
and accessories with this machine. The
use of non-Miele parts and accessories
will invalidate the guarantee.
~Any Miele accessories must be
suitable for the purpose they are being
used for. Consult Miele for advice.
Disposal of your old machine
~For environmental and safety
reasons ensure the machine is
completely drained of any residual
water 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 machine.
For tank system machines ensure that
any water is emptied out of the tank.
The manufacturer cannot be held
liable for damage caused by
non-compliance with these Warning
and Safety instructions.
Warning and Safety instructions
12

Disposal of the packing
material
The transport and protective packing
has been selected from materials which
are environmentally friendly for disposal
and can normally 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.
Rather than just throwing these
materials away, please ensure that they
are recycled.
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 household waste.
Please dispose of it at your local
community waste collection / recycling
centre and ensure that it presents no
danger to children while being stored
for disposal.
It should be unplugged or disconnected
from the mains electricity supply by a
competent person.
Caring for the environment
13

Electro-thermal door lock
The machine is equipped with an
electro-thermal door lock.
The door can only be opened when:
^the electricity supply to the machine
is switched on and:
^the On/Off button I-0 is pressed in.
To 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. The elements remain hot
for some time after the end of the
programme.
To close the door
^Lift the door upwards and push until
it clicks shut. Do not press the
release catch whilst shutting the
door!
After the first intake of water, it is no
longer possible to open the door,
except in the D(PRE-RINSE) and 6
(DRAIN) programmes. The machine
can be opened during drying if this
option has been selected.
The door remains locked until the end
of the programme. It can then be
opened.
To cancel a programme
If a programme has to be cancelled in
an emergency, e.g. when articles in the
machine jostle against each other or
the programme has been interrupted
because of a fault, the door will have to
be opened manually:
^Turn the programme selector to the
fposition (the programme is
cancelled after approx. 2 secs.).
Important!
See "To cancel a programme" in the
"Operation" section of this booklet for
details of how to continue from here.
Opening and closing the door
14

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.
^Turn the programme selector to f.
^Press the On/Off button I-0 to switch
the machine off.
^The emergency release cable is
located at the bottom of the machine
behind the service panel. Pull it
downwards to open the door.
Opening and closing the door
15

The water needs to be softened to
avoid calcium deposits building up on
instruments and utensils and in the
machine itself.
To ensure a steady supply of soft water
the water softener unit must always be:
1. correctly set (programmed) and
2. the salt reservoir must be filled.
(If the water hardness level is below
0.7 mmol/l (4 °d - German scale) the
reservoir does not need to be filled
with reactivation salt.)
The machine is set at the factory for
a water hardness level of 3.4 mmol/l
(19 °d).
If the water supply is harder or softer
than this (including below 0.7 mmol/l
or 4 °d) the factory setting will need
to be changed following the
instructions in "Setting the water
softener". See chart on the next
page for settings.
Your local water authority will advise
you on the water hardness in your area.
For fluctuating levels (e.g. 1.4 -
3.1 mmol/l or8-17°d)setthewater
softener to the highest setting (in this
example to 3.1 mmol/l or 17 °d).
Important
The built-in water softener has settings
from 0.2 - 10.8 mmol/l or 1 °d - 60 °d.
Setting the water softener
^Switch off the machine.
^Turn the programme selector to the
STOP position f.
^Press 4and 6at the same time,
hold them in and, whilst doing so,
switch the machine on with the I-0
button.
The current programme status "P..."
will show in the display.
The indicator light p/6will come
on.
^Press 3once, E01 for programming
level 1 will appear in the display.
^Turn the programme selector one
switch position clockwise (1 o’clock
position).
The number 19 appears in the
display (the factory water hardness
setting in °d), (equivalent to
3.4 mmol/l).
^Press 4as many times as is
necessary, or hold it in until the
required value (hardness level in °d)
appears in the display.
Once the number 60 has been
reached, the counter will begin again
at 0.
^Press the 6button. SP appears.
^Press 6again. The setting will now
be stored in memory. The display will
go out.
^The machine is now ready for use.
Water softener
16

Settings
°d
(German
scale)
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
36
37
38
39
40
41
42
43
44
45
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
6.5
6.7
6.8
7.0
7.2
7.4
7.6
7.7
7.9
8.1
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
65
67
68
70
72
74
76
77
79
81
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
36
37
38
39
40
41
42
43
44
45
°d
(German
scale)
mmol/l °f Setting
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
8.3
8.5
8.6
8.8
9.0
9.2
9.4
9.5
9.7
9.9
10.1
10.3
10.4
10.6
10.8
83
85
86
88
90
92
94
95
97
99
101
103
104
106
108
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
*) factory setting
For future servicing it is useful to make
a note of your water hardness level.
Enter your water hardness level here:
°d (German scale) or
mmol/l
Machines without a water softener
are set to "0" at the factory. This
setting of "0" must not be changed
on these machines.
Water softener
17

Filling the salt reservoir
Please only use special coarse grained
reactivation salt with granules of
approx. 1-4 mm. Do not use other types
of salt, e.g. table salt, agricultural or
gritting salt. These could contain
components which are insoluble in
water which could result in damage to
the water softener. If in doubt consult
your Miele Professional Department.
The salt reservoir holds approx. 2.5 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, fill it
with approx. 2.5 litres of water.
^Place the funnel provided in place.
^Fill carefully with salt. As it is filled,
displaced water will run out).
^Wipe any residual salt off the screw
threads on the socket.
^Screw the cap on firmly.
^Immediately after this: Run the
PRE-RINSE programme Dto remove
any traces of salt from the cabinet.
If after starting the PRE-RINSE
programme Dthe machine does not
start for a few minutes this is not a
fault. The water softener is being
reactivated.
Water softener
18

Salt indicator
When the salt reservoir is empty the k
indicator light bcomes on to remind
you to fill the reservoir.
Reactivation takes place automatically
during a programme.
The programme sequence indicator
light kalights up whilst this is
happening.
Water softener
19

The duo dispenser incorporated in the
door has a capacity of approximately
2 x 180 ml. for liquid agents.
Important:
Both reservoirs must always be filled
with the same liquid agent.
,Inadvertently filling the reservoir
with powder or liquid detergent
always causes serious damage to
the reservoir.
Neutralising agent (factory
setting)
Neutralising agent (pH-level: acidic)
neutralises residues of alkaline cleaning
agents on the surface of instruments
and utensils.
It is automatically dispensed in the
"Rinse" following the main wash.
Adding neutralising agent
The reservoir must be filled with
neutralising agent when the w
indicator light comes on.
There is also a level indicator for the
neutralising agent reservoir on the
inside of the door (see illustration
below).
^Open the door fully.
^Undo the screw caps.
Adding neutralising or rinsing agent
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