Miele G 7773, G 7774 Operating instructions
Operating Instructions
Commercial dishwashers
G 7773 / G 7774
It is essential to read these
operating instructions before
installing or using the machine,
to avoid the risk of accident
or damage to the machine. M.-Nr. 03 663 082
G W
Contents
Contents
Guide to the machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warning and Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Warning and Safety instructions (detachable). . . . . . . . . . . . . . . . . centre pages
Description of the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Setting the water softener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Opening and closing the door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Loading the dishwasher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Loading examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Unsuitable items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Adding rinsing agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Ventilating the dispenser system / maintenacne . . . . . . . . . . . . . . . . . . . . . . . 17
Adding detergent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Programme selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Programme chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Switching the machine on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Preparing the machine.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Selecting additional programmes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Interrupting a programme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Reactivating the water softener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Cleaning and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Correcting minor faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Electrical Connection U.K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Plumbing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Help to protect our environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2
Guide to the machine
Guide to the machine
12 3 4 5 6 7 8
1 “Operating temperature reached”
light
2 “In operation” light
3 DOS indicator light
“refill rinsing agent”
(in externally connected container)
and / or “refill liquid detergent”
(only where special DOS module
is connected externally)
4 “Reactivate softener” indicator light
(where fitted)
5 Reactivate softener switch
(where fitted)
6 Door release
7Start
8 Programme selector
(G 7774 control panel illustrated)
3
Guide to the machine
91011 1216131415
9 Rear connection DOS unit for liquid
detergent and electrical connection
for pressure booster pump _
(where fitted)
Wash cabinet (Pos. 10-12)
10 Drain tray
11 Combi-spray arm
12 Basket guide rails
(removable for cleaning)
4
Tank reservoir (Pos. 13-15)
13 Filter combination
14 Connection socket for salt container
(for water softener)
-where fitted15 Siphon
16 Container for
(beside the machine)
liquid rinse aid
Warning and Safety instructions
Warning and Safety instructions
This machine conforms to current
safety requirements. Inappropriate
use can however lead to personal
injury and damage to property.
Read the operating instructions
carefully before starting to use this
machine.
This way you will avoid the risk of
accidents, and damage to the machine.
Keep these instructions in a safe
place for future reference.
Correct usage
This machine is designed for com-
mercial use and for specialised applications only, as described in these
Operating Instructions. Using it for purposes other than those for which it was
designed would be unauthorised and
could cause harm.
The manufacturer cannot be held responsible for damage caused by improper use.
This equipment is not designed for
maritime use or for use in mobile installations such as caravans, aircraft
etc. However, it may be suitable for
such usage subject to a risk assessment of the installation being carried
out by a suitably qualified engineer.
Please pay attention to the following
notes, to maintain safe procedures.
The machine should be commis-
sioned and then maintained only by
the Miele Service Department, an authorised Miele Service Dealer or other approved competent person.
Do not install the machine in an
area where a danger of explosion
may be present, or sub-zero temperatures may occur.
Children and untrained personnel
should not be allowed access to
the machine or its controls.
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 met and
complies with local and national regulations. It should be checked by an expert
if necessary.
The manufacturer cannot be held responsible for damage such as electric shock
caused by missing or defective earthing.
A damaged machine is dangerous.
Switch off at the mains immediately
and call an authorised Miele service
dealer, or suitably competent engineer.
Any repair work may only be car-
ried out by a suitably competent
person authorized by Miele. Repairs by
unqualified persons could be dangerous for the user.
Take care when handling liquids
such as detergents, wetting
agents, or neutralising agents. These
may contain irritant or corrosive ingredients, acids or alkalis. On no account
use any organic solvent, as there may
be the danger of an explosion occurring. Follow the chemical manufacturer’s instructions and relevant safety
procedures carefully. Wear protective
gloves and goggles.
The water in the machine must not
be used as drinking water.
5
Warning and Safety instructions
Avoid inhalation of powder
cleaners. Irritant ingredients can
cause burning in the mouth and throat
is swallowed, or inhibit breathing.
Do not sit or lean on the open
door, or rest objects on it. This
could cause the machine to tip and be
damaged.
Be careful when sorting items with
sharp pointed ends and positioning them in the machine so that you do
not hurt yourself or create danger for
other operators.
When using this machine at higher
temperatures be especially careful
not to scald or burn yourself. Baskets
and inserts must first cool down. Any
water which may remain in containers
will be very hot and must be emptied
into the wash cabinet.
Do not touch the heating elements
during or directly after the end of a
programme. You could burn yourself.
Never use an ordinary or a high
pressure hose on or in the vicinity
of the machine.
Before any maintenance or repair
work is undertaken, the machine
must be disconnected from the mains
supply, by switching off at the mains
isolator, or withdrawing the mains fuse.
The following points should be observed to maintain standards, and
avoid damage to the machine and
the loads being cleaned.
Only use cleaning agents formu-
lated for special processes and approved by Miele for use with this ma-
chine. Use of unsuitable cleaning
agents could adversely affect the load
and the machine.
For pre-treatment and / or cleaning
only use low-foaming detergents
and disinfecting agents which have
been approved by Miele. Foam can
have an adverse effect on the disinfection and cleaning process.
Where a chemical additive is rec-
ommended on technical application grounds (for example with a cleaning agent), this does not imply that the
manufacturer of the machine takes responsibility for the effect of the chemical on the material of the items being
cleaned. 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.
Always follow the instructions of
the chemical manufacturer when
using cleaning agents and special application chemicals. Only use such
chemicals for the purpose and in the
situation specified, to the exclusion of
other chemicals, to avoid such dangers
as chemical reactions and material
damage.
The machine is designed only for
operation with water and additive
cleaning agents. Organic solvents
must not be used in the 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).
6
Warning and Safety instructions
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, quality of
water are discussed with the Miele Application Technology specialists.
If the cleaning result is subject to
these particularly stringent requirements (e.g. chemical analysis, specialised processes), a regular quality
control test should be carried out by
the user to ensure that required standards of cleanliness are being achieved.
Use special inserts in accordance
with the instructions provided.
Empty any containers or utensils
before arranging them in the machine.
Do not allow any remains of acids
or solvents, 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).
Accessories
The only accessories to be used
with the special commercial machine must be those supplied or approved by MIELE for the specific application. Consult your dealer or the Miele
Professional department for advice.
Disposal of an old machine
When disposing of an old machine
first make it unusable. Disconnect,
cut off the cable and any plug from the
cable. For environmental and safety
reasons ensure the machine is completely drained of any residue water
and cleaning agent. (Observe safety
regulations and wear safety goggles
and gloves). Make the door lock inoperative, so that children cannot accidentally shut themselves in. The simplest
way to do this is to remove the locking
pin (2 cross-slotted screws above the
door). Make appropriate arrangements
for the safe disposal of the machine.
For tank system machines ensure that
any water is emptied out of the tank.
Ensure that solutions or steam con-
taining acid salts do not come into
contact with the steel outer casing of
the machine, to avoid any corrosion
damage.
Follow both the installation instruc-
tions in this booklet, and also the
separate instructions with diagrams.
In countries where there are areas
which may be subject to infestation
by cockroaches or other vermin, pay
particular attention to keeping the machine and its surroundings in a clean
condition at all times. Any damage
which may be caused by cockroaches or other vermin will not be
covered by the machine guarantee.
The manufacturer cannot be held responsible for any damage caused
through non-observance of these
Warning and Safety instructions.
7
Description of the Machine
Description of the Machine
The Miele G 7773 and G 7774 are tank
loading commercial dishwashers,
loaded and unloaded from the front,
with very short batch times especially
suitable for continuous washing up in
guesthouses, cafés, fast food outlets,
boarding houses, etc.
In the U.K. these machines are fitted
with a water softener as standard. In
other countries check with your supplier.
Where water hardness is above 107
mg/l (ppm) the machine should be
fitted with a water softener.
8
Setting the water softener
N.B. The following instructions only
apply where a water softener unit has
been fitted-
To avoid the buildup of calcium deposits on crockery and in the dishwasher the water needs to be softened,
if it is harder than 107 ppm, (6 °d).
To ensure a steady supply of soft water
the water softener unit must always be:
1. correctly set
2. topped up with salt as soon as the
k indicator light comes on.
The first time the machine is used the
reactivation switch in the control panel
must be set to correspond with the
water hardness.
Setting the water softener
Scale
setting
on
disc
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
°dmmol/ l° f °eppm
10.7
12.5
14.3
16.0
17.9
19.6
21.4
23.2
26.8
30.4
33.9
39.3
42.8
50.0
57.1
67.8
85,7
126.7
10
11
12
13
15
17
19
22
24
28
32
38
48
71
1.07
6
1.25
7
1.42
8
1.60
9
1.78
1.96
2.14
2.31
2.67
3.03
3.38
3.92
4.27
4.98
5.70
6.76
8.54
12.64
7.5
8.8
10.0
11.3
12.5
13.8
15.0
16.3
18.8
21.3
23.8
27.5
30.0
35.0
40.0
47.6
60.1
88.9
CaCO3
107
125
143
160
179
196
214
232
268
304
339
393
428
500
571
678
857
1267
Your local water authority will advise
you on the water hardness in your area.
Setting the water softener
switch
The hardness range is divided into 18
time units. The dishwasher is set at the
factory at “100", corresponding to 267
ppm, (15 °d). If your water supply is
harder or softer than this, then:
change the scale setting on the controls (see Table).
Pull off the cover knob.
Loosen the screws
Turn the adjuster ring with the yellow
point to the correct setting (if necessary reposition the fixing screws).
9
Setting the water softener
Setting the water softener
Tighten the screws.
Put the cover knob back on.
Use a coin to turn the reactivation
switch clockwise as far as it will go,
until there is a resistance.
The dishwasher is ready for use.
“Re-activating the water softener”
see page 23.
10
Opening and closing the door
To open the door a
Press the release catch as far as it
will go and, at the same time, grasp
the door grip and open the door.
The door should only be opened during operation for emergencies: e.g. if articles are knocking together.
(see Interrupting a programme).
In pauses between operation the door
should always be kept closed.
See also notes under “Installation” to
protect surrounding wood.
To close the door
Lift the door upwards and push
firmly so that it clicks into position.
Do not press the release catch while
doing this.
Opening and closing the door
11
Loading the dishwasher
Loading the dishwasher
Loading crockery etc
Before loading
Empty out any liquids from containers.
Please note
Load the crockery so that water will
come into contact with all surfaces.
This ensures that they will be
properly cleaned.
Do not place crockery and cutlery inside other pieces where they may be
concealed.
Cutlery should be placed unsorted in
the cutlery basket, handles pointing
downwards.
Hollow items, such as cups, glasses,
pots, etc., must be inverted in the
basket.
Deep based items should be placed
at an angle so that water runs off
them freely.
Tall, narrow, hollow pieces should be
placed in the centre of the basket to
ensure good coverage of water.
The spray arms must not be obstructed. If necessary, manually rotate the arms to test.
Examples of loading see next page
12
Loading...