Miele G 7859 User manual

Operating Instructions
Commercial Dishwasher
G 7859
To prevent accidents
and machine damage
read these instructions
before
installation or use. M.-Nr. 07 484 741
en - US, CA

IMPORTANT SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Description of the machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Guide to the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Before using for the first time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Opening and closing the door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Water softener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Setting the water softener ...........................................14
Filling the salt reservoir .............................................15
Salt indicator .....................................................16
Loading the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Adjusting the upper basket ..........................................20
Items not suitable for dishwashers ....................................20
Adding rinse aid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Setting the dosage.................................................22
Adding cleaning agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Program selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Program chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Switching the machine on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Switching on .....................................................28
Starting the program.............................................28
Changing a program ............................................29
Selecting an additional function ....................................29
Program sequence indicator ......................................29
Switching off .....................................................29
Cancelling a program ..............................................30
Programming special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Cleaning and care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Correcting minor faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
After Sales Service.................................................43
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Plumbing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Caring for the environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Contents
2

WARNING -
When using your dishwasher
follow basic precautions,
including the following:
This dishwasher is only intended for
specialized applications. Only use
the machine for its intended
purpose. Any other use, conversion
or modification is dangerous. The
manufacturer cannot be held
responsible for damages caused by
improper use of this machine.
This dishwasher complies with
current safety requirements.
Improper use of the machine can
lead to personal injury and material
damage.
Read all instructions before installing
or using this machine.
Keep these operating instructions in
a safe place and pass them on to
any future user.
Installation and service
~Installation and repair work should
be performed by a Miele authorized
service technician. Work by unqualified
persons could be dangerous and may
void the warranty.
~Do not use the machine until
properly installed.
~Do not install the machine in an area
where a danger of explosion or of
freezing temperatures may be present.
~The installation of this unit in
non-stationary locations (e.g. ships)
must be performed by a qualified
installer or service agency, in strict
accordance with national and local
safety regulations and standards.
~Before installation, make sure that
the voltage and frequency listed on the
data plate correspond with the
household electrical supply. This data
must correspond to prevent injury and
machine damage. Consult a qualified
electrician if in doubt.
~Be certain this machine is properly
installed and grounded by an
authorized technician. To guarantee the
electrical safety of this machine,
continuity must exist between the
machine and an effective grounding
system. It is imperative that this basic
safety requirement be met. If there is
any doubt, have the electrical system
checked by a qualified technician. The
manufacturer cannot be held
responsible for damage or injury, such
as electric shock, caused by missing or
defective grounding.
IMPORTANT SAFETY INSTRUCTIONS
3

~Do not install or use a damaged
dishwasher. A damaged machine is
dangerous. Unplug the machine and
call your Miele dealer or the Miele
Technical Service Department.
~If the power cord is damaged it
must only be replaced by a Miele Ser-
vice technician with a genuine Miele
power cord.
~Do not use an extension cord to
connect this machine to electricity.
Extension cords do not guarantee the
required safety of the machine (e.g.
danger of overheating).
~Defective components should be
replaced by Miele original parts only.
Only with these parts does the
manufacturer guarantee that they
comply with safety requirements.
~Before installation or service,
disconnect the power supply to the
work area by unplugging the unit,
"tripping" the circuit breaker or
removing the fuse.
~When work has been performed on
the supply plumbing, the supply line to
the commercial dishwasher must be
bled.
Otherwise, the water softening system
may be damaged.
Use
~Please follow the advice on
installation in this manual and in the
separate Installation Instructions.
~Personnel operating the machine
should be trained regularly.
~Persons who lack physical, sensory
or mental abilities, or experience with
the machine should not use it without
supervision or instruction by a
responsible person.
~Do not allow children to play in or
around the dishwasher, or to operate it.
~Do not tamper with the controls.
~BURN AND SCALD HAZARD
This dishwasher reaches very high
temperatures. Take care when
unloading the unit. Let baskets and
inserts cool before touching them. Any
water which may remain in containers
will be very hot and should be emptied
into the wash cabinet.
~BURN HAZARD
The heating elements become
extremely hot during use. Do not touch
the heating elements during or directly
after the end of a program.
~Take care when handling liquids
such as detergent, rinsing, wetting, or
neutralizing agents. These may contain
irritant or caustic ingredients. Do not
use any organic solvents. Danger of
explosion!
Follow the instructions and relevant
safety procedures carefully. Wear
protective gloves and goggles. The
manufacturer’s safety conditions must
be observed with all chemical agents.
IMPORTANT SAFETY INSTRUCTIONS
4

~Under certain conditions, hydrogen
gas may be produced in a hot water
system that has not been used for two
weeks or more. HYDROGEN GAS IS
EXPLOSIVE. If the hot water system has
not been used for such a period, turn
on all hot water faucets and let water
flow from each for several minutes
before using the dishwasher. This will
release any accumulated hydrogen
gas. Do not smoke or use an open
flame during this time.
~Avoid inhaling detergent. If
swallowed, it can cause burning in the
mouth and throat or inhibit breathing.
~Be careful when sorting and loading
items to be washed: locate sharp items
so that they are not likely to damage the
door seal; and load sharp knives with
the handles up to reduce the risk of
injuries.
~The water in the machine must not
be used as drinking water.
~Do not sit or lean on the open door.
This could cause the machine to tip or
be damaged.
~Never clean the machine or near its
vicinity with a water or high pressure
hose.
~Only use cleaning agents
formulated for special processes and
approved by Miele for use with this
machine. Keep all cleaning agents out
of the reach of children. Use of
unsuitable cleaning agents could
adversely affect the
components of the machine.
~Use only rinse agents for
commercial dishwashers. When other
rinse agents are used, there is the
danger that the rinse load and the
dishwasher might be damaged.
~Pre-treatments with detergents can
create suds, as can certain rinsing
agents. For pre-treatment and / or
cleaning only, use low-sudsing
detergents which have been approved
by Miele. Suds can have an adverse
effect on the cleaning process.
~When a chemical additive is
recommended on technical application
grounds (e.g. with a detergent), this
does not imply that the manufacturer of
the dishwasher takes responsibility for
the affect 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 publicized by the
chemical producer, can have a
negative effect on the cleaning result.
~Always follow the instructions of the
chemical manufacturer when using
detergents and special application
chemicals. Only use such chemicals for
the purpose and in the situation
specified to avoid such dangers as
chemical reactions and material
damage.
~The dishwasher is designed only for
operation with water and additive
cleaning agents. Organic solvents must
not be used in the machine. An
explosion or machine corrosion could
occur with the use of organic solvents.
IMPORTANT SAFETY INSTRUCTIONS
5

~In critical applications where very
stringent requirements must be met, it
is highly recommended that all relevant
factors for the process, such as
cleaning agent, quality of water, etc.,
be discussed with a Miele Application
Specialist.
~The special inserts should only be
used for their specific application.
~Do not wash plastic items unless
they are marked "dishwasher safe" or
the equivalent. If in doubt follow the
manufacturers recommendations.
~Empty any containers or utensils
before arranging them in the machine.
~Do not allow any remains of acids or
solvents, particularly hydrochloric acid
or chloride solutions, to get into the
wash cabinet. The presence of any
solvents should be minimized
(especially those in hazard class A1).
~To avoid corrosion damage ensure
that solutions or steam containing
hydrochloric acid do not come into
contact with the steel outer casing of
the machine.
Accessories
~Only specific additional equipment,
made by Miele or approved by Miele,
should be connected to this machine.
Consult Miele on the type and
application of such equipment.
Disposal of the old machine
~When disposing of your old
dishwasher first make it unusable.
Disconnect it from the mains power
supply, cut off the cable and plug from
the cable.
~For environmental and safety
reasons ensure the machine is
completely drained of any residual
water and detergent. (Observe safety
regulations and wear safety goggles
and gloves).
~Remove the door to the washing
compartment, so that children cannot
accidentally shut themselves in. Make
appropriate arrangements for the safe
and environmentally responsible
disposal of the machine.
~For tank system machines ensure
that all water is emptied out the tank.
The manufacturer cannot be held
responsible for any damage caused
by non-observance of these
Important Safety Instructions.
~SAVE THESE
INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
6

This Miele machine is a frontloading
commercial dishwasher, with very short
batch times especially suitable for use
in restaurants, cafés, fast food outlets,
boarding houses, etc.
It operates on the freshwater system
and is equipped with a water softener
and electro-thermal door lock as stan-
dard.
Standard
^Steam condenser (DK)
Description of the machine
7

aOn/Off button (I-0)
bDoor release
cDisplay
d“Delay start” indicator light
(see “Programming special
functions”)
e“Drying” indicator light
f“Program start” indicator light
gStart button
hDrying button
iSwitch to change display from
“Actual temperature” to “Elapsed
program time”
jOptical interface
(for service technician)
k“Add (liquid) detergent”indicator
light
(only where special DOS module is
connected externally)
l“Add rinse aid” indicator light
m“Reactivate water softener” indicator
light
n“Check water inlet/outlet” indicator
light
oProgram sequence indicators
pProgram selector
Guide to the machine
8

aConnection for DOS dispenser
module at the rear (Dispenser pump
for liquid detergent)
bFilter combination
cSalt reservoir
(Water softener)
dDispenser for powder detergent
eDispenser for rinse aid
(with dosage selector)
Guide to the machine
9

Before using for the first time please
pay special attention to the following
points.
Detailed information on these points
can be found in the relevant sections
of these Operating Instructions.
Set the water softener unit
The water softener unit must be set for
the water hardness level in your area.
The salt reservoir also has to be filled,
first with water and then with
reactivation salt.
,Filling the salt reservoir with
cleaning agent by mistake will cause
serious damage to the water
softener. Please check every time
before refilling that the package
contains reactivation salt.
Add rinsing agent
,Inadvertently filling the reservoir
for rinsing agent with cleaning agent
(including liquid cleaning agents
and washing up liquid) will cause
serious damage to the reservoir.
Only use designated cleaning agents
for special applications.
Do not use cleaning agents formulated
for use in domestic dishwashers.
Load the machine carefully
Arrange the load so that water will
come into contact with all surfaces.
Concealed surfaces will not be
cleaned.
The spray arms must not be blocked by
any items.
Adding cleaning agent
Follow the cleaning agent
manufacturer’s recommendations on
dosage.
The amount required will depend on the
type of cleaning agent and the
programme chosen.
Make sure you read the notes on
dosing given in the program chart.
Cleaning results may vary from brand
to brand. If you are not satisfied with
the results from one brand try another
quality brand before contacting Miele
for advice.
The filter combination at the base of
the wash cabinet and the spray arms
must be kept clean.
Regular checking and cleaning is
essential.
Before using for the first time
10

Electric door lock
The machine is equipped with an
electric door lock.
The door can only be opened when:
^the machine is connected electrically
^the main switch I-0 is on.
To open the door a
^Press the door button in fully and at
the same time pull open the door.
,Do not touch the heating
elements if you open the door during
or directly after the end of a
program. The heating elements
remain hot for some time after the
end of a program.
To close the door
^Lift the door upwards until it clicks
into position. Do not push in the door
release button as you do so.
The door is locked approx. 1.5 mins.
after program start, except in the
program D(PRE-RINSE),
6(DRAIN) and during the drying
phase (additional program).
The door remains locked until the end
of the program, when it can be opened
again.
Cancelling a program
If a program has to be cancelled in
extreme cases, e.g. when articles in the
machine jostle against each other or the
program is interrupted with a fault
indication, the door must be opened
(deliberate intervention):
^Turn the program selector switch to f
(the program is cancelled after approx.
2 secs.).
Important: Further procedures are
described in the section “Switching on
and off” under “Cancelling a program”.
Opening the door with the
emergency release
The emergency release should only
be used when the door cannot be
opened normally (e.g. power failure).
^Turn the program selector switch to f.
^Switch off the machine (I-0 switch).
^Pull down the emergency release
behind the door outer panel.
Opening and closing the door
11

To avoid the build-up of calcium
deposits on items being cleaned and in
the machine the water needs to be
softened.
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
70 mg/l (4 °d - German scale) the
water does not need to be softened.)
The machine is set at the factory for
a water hardness level
of 340 mg/l (19 °d).
If the water supply is harder or softer
than this (including below 70 mg/l or
4 °d) the factory setting will need to
be changed following the
instructions in the section "Setting
the water softener". For settings see
chart on the next page.
Your local water authority will advise
you on the water hardness in your area.
For fluctuating levels (e.g. 140 - 310
mg/l or8-17°d)setthewater softener
to the highest setting (in this example to
310 mg/l or 17 °d).
Important
The built-in water softener has settings
from 20 mg/l to 1080 mg/l or 1 °d -
60 °d.
For future servicing it is useful to make
a note of your water hardness level.
^Enter details of your water hardness
level here: °d / mg/l
Water softener
12

Table of settings
°d
(German
scale)
mg/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
20
40
50
70
90
110
130
140
160
180
200
220
230
250
270
290
310
320
340
360
380
400
410
430
450
470
490
500
520
540
560
580
590
610
630
650
670
680
700
720
740
760
770
790
810
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)
mg/l °f Setting
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
830
850
860
880
900
920
940
950
970
990
1010
1030
1040
1060
1080
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
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
13

Setting the water softener
^Switch the machine off.
^Turn the program selector to f
"STOP".
^Press 4and 6at the same time,
hold them in and while doing so
switch on the machine with the I-0
mains switch.
The actual program status "P..."
appears in the display.
The p/6indicator light illuminates.
^Press 3once, and "E01" (program
level 1) appears in the display.
^Turn the program selector six switch
positions to the right (6 o’clock
position).
The number "19" appears in the
display (the factory water hardness
setting in °d), (equivalent to 340
mg/l).
^Press 4as many times as is
necessary, or hold it in until the
required value (degree of hardness
in °d) appears in the display.
The counter returns to "0" after
reaching "60".
^Press 6. "SP" appears.
^Press 6once more. The setting will
now be stored. The display clears.
^The machine is now ready for
operation.
Water softener
14

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 liters of water.
^Place the funnel provided in place.
^Fill carefully with salt, (as it is filled
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" Dprogram to remove any
traces of salt from the cabinet.
Important:
If after starting the "PRE-RINSE"
program Dthe machine does not start
for a few minutes this is not a fault. The
water softener is being reactivated.
Water softener
15

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 program. The program
sequence indicator light a, klights
up while this is happening.
Water softener
16

Loading the machine
Preparation
^Empty all containers before loading
into the machine.
,Ensure that no acid or solvent
residues, especially hydrochloric
acid or chlorides get into the wash
cabinet.
Notes
^Load items so that water will come
into contact with all surfaces. This
ensures that they will be properly
cleaned.
^Do not place items to be cleaned
inside other pieces where they may
be concealed.
^Hollow vessels such as cups,
glasses, pots etc. should be inverted
and placed in the correct inserts.
^Deep based items should be placed
at an angle to ensure that water runs
freely off them.
^Tall, narrow, hollow pieces should be
placed in the centre of the basket to
ensure good coverage of water.
^Small pieces should be placed on
the cup racks in the upper basket.
Do not obscure them by larger items
below. Cups should be on the lower
rack and bowls on the top rack so
that water reaches all pieces.
^The water duct for the spray arm in
the middle of the upper basket must
not be covered.
^The spray arms must not be blocked
by items which are too tall or which
hang down in their path. If necessary,
manually rotate the arms to test.
Use the upper basket for:
^small, lightweight, delicate items
such as cups, saucers, glasses,
dessert bowls etc. as well as for
lightweight thermally stable plastic
items.
Use the bottom basket for:
^larger and heavier items such as
plates, serving platters, saucepans,
bowls etc. Glasses may only be
cleaned in the bottom basket if it is
fitted with a special glassware insert
or if there is a special bottom basket.
Cutlery
^Unsorted cutlery should be placed in
the cutlery holders with the handles
facing downwards.
Select baskets and inserts which are
appropriate for the application.
See examples on the following pages
Loading the machine
17

Loading examples:
O 881 Upper basket
for 20 cups, 24 saucers or 12 dessert
plates.
U 880 Bottom basket
with2xE216half inserts each for
15 plates Ø 240 mm and2xE165
cutlery baskets for mixed cutlery.
Individual upper and bottom baskets
O 889 Upper basket carrier
to take various inserts, e.g. containers
for cutlery and glasses.
U 880 Bottom basket
with E 884 insert 1/1 for 20 large plates
or 10 trays.
Loading the machine
18

Glass-Set GG/F-GL
O 882 Upper basket
for 27 glasses Ø 65 mm.
U 880 Bottom basket
with2xE205half inserts each for
14 glasses Ø 65 mm.
Loading the machine
19

Adjusting the upper basket
The upper basket can be adjusted
above and below the middle position
by 2.5 cm. It is set in the middle
position on delivery.
Depending on the position of the upper
basket, plates of the following diameter
can be accommodated in the baskets:
Example: Upper basket O 881
Upper
basket
position
Upper
basket
plate Ø cm
Bottom
basket
plate Ø cm
top max. 16.5 24 *)
middle max. 19 24 *)
bottom max. 21.5 24 *)
*) in insert E 216. For plates up to Ø 30
cm use insert E 888.
To adjust the upper basket:
^Pull the upper basket out until a
resistance is felt, lift from the runners
and remove.
^Unscrew the knurled nuts (roller
bearings) on both sides of the basket
with a No. 7 spanner and reposition
as required.
Items not suitable for
dishwashers
–Cutlery with wooden or horn handles.
–Wooden or plastic cutting boards.
–Glued items, e.g. old knives with
handles which have been glued on.
–Hand-made craft items.
–Copper or tin items.
–Plastic items which are not heat
resistant.
Please note
– Silver and aluminium items can
suffer some discolouration.
– Colours painted over a glaze may
fade after a number of washes.
– Clouding may occur on glasses after
frequent washing.
Our recommendations
–Wash delicate glassware by hand.
–When purchasing new glasses,
dishes and cutlery make sure they
are dishwasher safe.
Loading the machine
20