Miele PG 8172 User manual

PG 8172
PG 8172 ECO
PG 8172 l PG 8172 ECO
Miele & Cie. KG
Carl-Miele-Straße 29
33332 Gütersloh
Telefon [phone], Fax [phone]
Internet: http://www.miele.de
Ä
nderungen vorbehalten / Erstellung 09.09.2013 M.-Nr. 09 601 300
Deutschland
Miele & Cie. KG
Vertriebsgesellschaft Deutschland
Geschäftsbereich Professional
Carl-Miele-Straße 29
33332 Gütersloh
Tel: [phone]
Fax: [phone]
Internet: www.miele-professional.de
Schweiz / Suisse / Svizzera
Miele AG
Limmatstrasse 4
8957 Spreitenbach
Tel: [phone] Zentrale
Tel: [phone]
Fax: [phone]
Reparatur- und Pikettservice: 0800 551 670
Miele Service Professional 0 800 551 670
E-mail: [email protected]
Internet: www.miele-professional.ch
France
MIELE S.A.S.
93151 - Le Blanc-Mesnil CEDEX
9 av. Albert Einstein - Z. I. du Coudray
Tél: [phone]
Fax: [phone]
R.C.S. Bobigny B 708 203 088
E-mail: [email protected]
Internet: www.miele.fr
Accessoires et pièces détachées
Tél: [phone]
(0,34 € TTC/mn)
E-mail: [email protected]
Italia
Miele ltalia S.r.l.
39057 Appiano
S. Michele (BZ)
Strada di Circonvallazione, 27
E-mail: [email protected]
Internet: www.miele-professional.it
Agenzie e centri di assistenza tecnica
autorizzati Miele in tutte le regioni italiane.
Tel: [phone] (Contact Center Professional)
Lu-Ve 8.00-18.00
Österreich
Miele Gesellschaft m.b.H.
Mielestraße 1
5071 Wals bei Salzburg
Tel: [phone]
Fax: [phone]
Internet: www.miele-professional.at
E-Mail: [email protected]
Werkskundendienst: 050 800 390
(Festnetz zum Ortstarif; Mobilfunkgebühren
abweichend)
Nederland
Miele Professional
De Limiet 2
Postbus 166
4130 ED VIANEN
Telefoon afdeling Customer Service
Professional
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
(verkoop & algemene vragen)
E-mail: [email protected]
(service & onderhoud)
Internet: www.miele-professional.nl
Luxemburg
Miele S.à r.l.
20, rue Christophe Plantin
Postfach 1011
L-1010 Luxemburg/Gasperich
Tel: [phone] (Werkkundendienst)
Tel: [phone] (Produktinformation)
Mo-Do 8.30-12.30, 13-17 Uhr
Fr 8.30-12.30, 13-16 Uhr
Fax: [phone]
E-mail: [email protected]
Internet: www.miele.lu
Belgique / België
Miele Belgique S.A. / Miele België N.V.
Z.5 Mollem 480
Hof de Bollebeeklaan 9
1730 Mollem (Asse)
Tel: [phone]
Fax: [phone]
Tel. Réparations à domicile /
Tel. Herstellingen aan huis: 02 451 16 18
E-mail: [email protected]
Internet: www.miele-professional.be
United Kingdom
Miele Co. Ltd.
Fairacres, Marcham Road
Abingdon, Oxon, OX14 1TW
Tel: [phone]
Customer Contact Centre Tel: [phone]
E-mail: [email protected]
Internet: www.miele.co.uk
China
Miele (Shanghai) Trading Ltd.
1-3 Floor, No. 82 Shi Men Yi Road
Jing' an District
200040 Shanghai, PRC
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.miele.cn
Miele (Hong Kong) Limited
41/F- 4101, Manhattan Place
23 Wang Tai Road
Kowloon Bay
Hong Kong
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
lndia
Miele lndia Pvt. Ltd.
Ground Floor, Copia Corporate Suites
Plot No. 9, Jasola
New Delhi -110025
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.miele.in
Ireland
Miele Ireland Ltd.
2024 Bianconi Avenue
Citywest Business Campus, Dublin 24
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.miele.ie
Singapore
Miele Southeast Asia
Miele Pte. Ltd.
163 Penang Road
# 04 – 02/03 Winsland House II
Singapore 238463
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.miele.sg
South Africa
Miele (Pty) Ltd
63 Peter Place, Bryanston 2194
P.O. Box 69434, Bryanston 2021
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.miele.co.za
United Arab Emirates
Miele Appliances Ltd.
P.O. Box 11 47 82
Gold & Diamond Park
Sheikh Zayed Road
Building 6 / Offices Nos. 217
Dubai
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.miele-professional.ae
Canada
Miele Limited
161 Four Valley Drive
Vaughan
Ontario L4K 4V8
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.miele.ca

About this manual
41
Original operating instructions
for Miele commercial dishwashers PG 8172 and PG 8172 ECO
Table of contents
1About this manual-------------------------------42
2Safety notes ---------------------------------------42
2.1Proper use ------------------------------------------42
2.2Improper use ---------------------------------------42
2.3Electrical safety------------------------------------43
2.4Safety notes for maintenance and repairs --43
2.5General safety notes -----------------------------43
3Before working with the machine ----------44
4Product description-----------------------------44
4.1Mode of operation---------------------------------44
4.2Special equipment --------------------------------44
4.3Overview --------------------------------------------45
4.4Display (Touchscreen) and start button -----46
4.5The standard wash programme ---------------47
5Rinse aid and detergent-----------------------48
5.1Rinse aid --------------------------------------------48
5.2Detergent--------------------------------------------48
5.3Suction tube with level control -----------------49
5.4Changing the detergent product---------------49
5.5Priming the dispenser pumps ------------------50
6Internal water softener (special
equipment)-----------------------------------------50
6.1Lack of salt display--------------------------------50
6.2Filling regeneration salt--------------------------50
7Operation-------------------------------------------51
7.1Before switching on the machine--------------51
7.2Switching on the machine and preparing it
for operation----------------------------------------51
7.3Washing ---------------------------------------------51
7.4Switching off----------------------------------------53
8Servicing and maintenance ------------------54
8.1Daily cleaning --------------------------------------54
8.2Weekly cleaning -----------------------------------55
8.3Monthly cleaning ----------------------------------56
8.4Descaling--------------------------------------------56
8.5Maintenance by the Service Department----56
9Malfunctions --------------------------------------57
9.1Accessing the error code------------------------59
9.2Poor cleaning result ------------------------------59
10Info level 1 -----------------------------------------60
11Info level 2 -----------------------------------------62
12PIN menu -------------------------------------------63
12.1General settings -----------------------------------63
12.2Automatic switch on / switch off ---------------65
12.3Operating data -------------------------------------66
12.4Hygiene logbook-----------------------------------67
12.5Descaling / basic cleaning ----------------------67
12.6Changing the amount of detergent /
rinse aid ---------------------------------------------70
12.7Resetting the water countdown indicator----70
13Integrated operating instructions ----------71
14Customer-specific modifications-----------71
15Installing the machine and tables----------71
15.1Installing the machine----------------------------71
15.2Attaching the tables-------------------------------72
15.3Converting the basket support -----------------72
16Water connection--------------------------------73
16.1Requirements for the on-site inlet water
connection ------------------------------------------73
16.2Requirements for the on-site water stop
cock---------------------------------------------------73
16.3Connecting the supply hose --------------------73
16.4Connecting the drain hose ----------------------74
17Electrical connection---------------------------74
17.1Connecting the mains cable --------------------75
17.2Establishing an earth connection--------------75
17.3Connection diagram ------------------------------76
18External dispenser pumps -------------------77
18.1Terminals--------------------------------------------77
18.2Electrical connection -----------------------------78
18.3Setting the parameters---------------------------79
19Taking the machine out of service for a
long period ----------------------------------------79
20Putting the machine back into service
after a long period of disuse-----------------79
21Technical Information--------------------------80
22Emissions------------------------------------------80
23Disposal --------------------------------------------80

GB

About this manual
42
1 About this manual
These operating instructions will give you a quick overview of the main functions of your commercial
dishwasher.
Please read through the safety notes carefully that have been listed here for safe
handling of the PG 8172 commercial dishwasher.
The following symbols are used in these instructions:
Symbol Meaning
Danger
Warning against potential serious or fatal injuries to persons if the described precautionary
measures are not taken.
Warning
Warning against potential minor injuries to persons or potential material damage if the
described precautionary measures are not taken.
Caution
Warning against defects in or destruction of the product if the described precautionary
measures are not taken.
IMPORTANT Important information is given here.
INFO Useful information is given here.
This symbol indicates instructions.
This symbol indicates results of your actions.
This symbol indicates itemisations.
This symbol refers to a chapter with more detailed information.
2 Safety notes
2.1 Proper use
– The PG 8172 commercial dishwasher is a technical device for commercial use and is not
intended for private use.
– Use the commercial dishwasher only for washing dishes such as plates, cups, cutlery and trays
or for washing glasses of a gastronomic and related type.
2.2 Improper use
– This appliance can be used by children aged 8 and over and by persons with reduced physical,
sensory or mental capabilities or lack of experience and knowledge if they are supervised or
have been instructed concerning the safe use of the appliance and understand the resulting
risks.
– Children must not play with the appliance.
– Cleaning and user maintenance should not be carried by children without supervision.
– Do not use the commercial dishwasher to wash electrically heated devices or parts made of
wood.
– Do not wash without a washing basket.
– Do not wash parts made of plastic if they are not heat and lye-resistant.
– Use a suitable detergent to wash parts made of aluminium such as jars, containers or plates in
order to prevent black stains.
– Miele does not assume liability for any damage caused due to improper use of the commercial
dishwasher.

Safety notes
43
2.3 Electrical safety
– The electrical safety of this machine is guaranteed only if it is connected to a correctly installed
protective circuit and a residual-current circuit breaker. It is very important that this basic safety
requirement is tested and in case of doubt the installation must be checked by a qualified
electrician.
The manufacturer cannot be held responsible for damage caused by a missing or broken
protective circuit (e.g. electrical shock).
2.4 Safety notes for maintenance and repairs
– Maintenance work and repairs may only be performed by authorised Miele service technicians.
Improper maintenance or repairs may cause significant danger for the user, for which Miele is
not liable.
– When performing installation and maintenance work, disconnect the machine from the power
network. Electricity consumers (heating element, frequency inverter, ...) are under voltage until
the on-site mains disconnector has been operated.
– Only original Miele spare parts may be used for maintenance and repairs. If original spare parts
are not used, the warranty is invalidated.
– A damaged or leaking machine can endanger your safety. In case of defects, switch off the
machine immediately. Switch off the on-site mains disconnector (main switch). Only then is the
machine without power.
– Do not operate a damaged machine. In case of defects resulting from an unknown cause,
switch off the machine, and switch it on again only when the defect has been rectified.
– Contact your installer and/or electrician if the on-site water and/or electricity supply is the cause
of the malfunction.
– Notify an authorised service technician or your retailer if another fault has occurred.
– If the mains cable of this machine is damaged, it must be replaced by the manufacturer or his
Customer Service or another qualified person in order to prevent hazards. The mains cable
must be H07 RN-F type or equivalent.
– Do not spray the machine and the surrounding area (panels, base) using a water hose, steam-
jet air ejector or high-pressure cleaner.
– Ensure that the base of the machine is not flooded when cleaning the floor in order to prevent
an uncontrolled inflow of water.
2.5 General safety notes
– Read through the safety notes and operating instructions in this manual carefully. Retain the
operating instructions for future reference. Miele does not assume liability or warranty in case
of non-adherence to these safety notes and operating instructions.
– Use the commercial dishwasher only after you have read and understood the operating
instructions. Allow the Miele Service Department to provide information about the operation
and functioning of the commercial dishwasher. Always operate the machine as described in
these operating instructions.
– Train the operating personnel as regards handling the machine and inform them about the
safety notes. Repeat the training sessions at regular intervals to prevent accidents.
– For your safety, test the on-site residual-current circuit breaker (FI) regularly by pressing the
test button.
– Close the on-site water stop cock after the work is complete.
– Switch off the on-site mains disconnector after the work is complete.
GB

Before working with the machine
44
3 Before working with the machine
Have the machine set up by an authorised service technician or your dealer (15).
Have the machine connected as per the locally applicable standards and the regulations of the authorised
mechanics (water, waste water, electrical system) (16 and 17).
After connecting the water and the power properly, contact the relevant Miele Service Department or your
dealer for the commissioning of the machine and for providing training in its operation. Have yourself and
your operating personnel trained in the operation of the machine.
4 Product description
4.1 Mode of operation
The boiler and the tank fill and are warmed up to the operating temperature after the machine is switched on.
During the heating phase, the lighting of the start button (3) changes gradually from red to green. When the
target temperatures are reached, the machine is ready for use. The start button lights up green.
The machine is fully automatic with programmes consisting of three steps: Wash, Drain and Rinse. While a
wash programme is running, the start button gradually changes from blue to green.
4.2 Special equipment
The following special equipment is available:
PG 8172 ECO (model)
The construction above the machine has a fan motor and a heat exchanger. After rinsing, the fan motor
draws the steam and vapours (= exhaust air) out of the interior through the heat exchanger. The cold
fresh water flowing through the heat exchanger condenses the vapours and is preheated for the rinsing of
the next wash programme. Less energy is therefore required to heat the fresh water to the recommended
rinse temperature. A waste water heat exchanger provides an additional energy gain. This system also
sustainably improves the kitchen climate because when you open the hood there are less vapours from
the machine.
Requirement: Connect the machine to the cold water.
Automatic hood opening (special accessory to be installed by the service technician)
The hood opens automatically after each wash cycle.
Internal water softener (6)

Product description
45
4.3 Overview
Pos. Description
(1) ECO module (acc. to equipment version)
(2) Display (Touchscreen)
(3) Start button
(4) Machine hood (= hood)
(5) Basket support
(6) Lower spray arm
(7) Tank cover
(8) Filter cylinder
(9) Pump inlet filter
(10) Spray arm bearing
Pos. Description
(11) Bushings for cables and hoses
(12) Water supply hose
(13) Suction tube for rinse aid (red cover cap)
(14) Suction tube for detergent (blue cover cap)
(15) Water drain hose
(16) Hoses and cables for the suction tubes
(17) Mains cable
(18) Connection for on-site equipotential
bonding system
GB

Product description
46
4.4 Display (Touchscreen) and start button
Activating the display
Touch the display with your finger.
The display turns on and then off again after a short time. This
saves energy and prevents accidental switching on of the
machine.
INFO Switching on the machine, see chapter 7.2.
On the screen touch-sensitive buttons are displayed. Operate the screen with your fingers only, not with
sharp objects. Each touch of a button is confirmed by a beep. Events such as e.g. the end of the programme
or malfunctions are indicated by a sequence of tones.
INFO The authorised service technician can deactivate the beep and the sequence of tones.
Operational state
(a) On/Off button
(b) Self-cleaning programme
(c) Switch to info level 1 info level 2 PIN menu
(d) Start button
Start button
The coloured lighting of the start button (d) has the following meanings:
Colour Meaning
not lit Machine is switched off
red Machine is not yet ready for use
green Machine is ready for use
blue Machine is washing
red and green Machine is filling and heating up
green and blue Wash programme is running
blue and not lit Self-cleaning programme is running
flashing green Wash programme is ended; hood has not been opened yet
flashing green-blue Only for PG 8172 ECO model machines:
Vapours being extracted. The wash programme has not completely finished.
Menu levels
The machine electronic control unit is split into 3 levels:
Level for the dishwashing staff (4.5)
Info level 1 with additional wash programmes and information (10)
Info level 2 with access to the PIN menu (11)

Product description
47
4.5 The standard wash programme
The wash programme display depends on which application the machine has been programmed for. If
necessary, the machine can also be reprogrammed later.
Programme 2 is already pre-selected when the machine is ready. Another wash programme is selected by
tapping. The selected programme is represented by a button with a white background.
Application of the
machine
Programme 1 for Programme 2 for Programme 3 for
Dishwasher Slightly soiled
dishes
Medium soiled
dishes
Heavily soiled
dishes
Glasswasher Delicate glasses
Less delicate
glasses Robust glasses
Bistro dishwasher Glasses Glasses and cups Plates
Bistro and cutlery
washer Glasses Cutlery Plates
Cutlery washer Cutlery
INFO The indicator on your commercial dishwasher may vary since the authorised service technician can
display appropriate images for your machine from a collection of images. At your request, the
service technician can also hide programmes.
GB

Rinse aid and detergent
48
5 Rinse aid and detergent
Danger
When handling chemicals, observe the safety notes and the dosage recommendations on
the packaging.
Use only chemicals recommended for the purpose by the manufacturer to avoid violent
chemical reactions (such as a detonating gas reaction) and material damage.
Do not mix any chemicals as unforeseen chemical reactions could result.
Additional products that enhance the cleaning must be approved for use in a commercial
dishwasher. If in doubt, ask your dealer.
Wear protective clothing, protective gloves and protective goggles when handling chemicals.
Caution
Use only products that are suitable for commercial dishwashers. Such products are
appropriately marked.
Do not fill detergent in the container for rinse aid and vice versa.
5.1 Rinse aid
Rinse aid is necessary to ensure that water on the dishes drains off after washing and dries off after a short
while. Rinse aid is automatically metered from an external container. The rinse aid dispenser pump is an
internal component of the machine.
The dosing amount is set by the authorised service technician when commissioning the machine (12.6).
INFO When using an external dispenser pump, a transfer strip is available for connecting the dispenser
pump (18).
5.2 Detergent
Caution
Do not use acidic cleaners.
Do not mix different detergent products in order to prevent crystallisation which could
destroy the detergent dispenser pump (5.4)
Do not use products that can create foam, e.g. hand soap, soft soap, manual washing-up
liquid. Ensure that these do not enter the machine even during the pre-treatment of the
utensils.
A detergent is necessary to ensure that the leftovers and dirt on the dishes is cleaned. Detergents can be
dosed as follows:
Manually as detergent powder.
Automatically from an external container using a detergent dispenser pump.
INFO The detergent dispenser pump is not included in the scope of delivery of all machines. When using
an external dispenser pump, a transfer strip is available for connecting the dispenser pump (18).
5.2.1 Manual dosing of detergent powder
Danger
Avoid inhaling powder cleaning agents. Swallowed cleaning agents can cause burns in the
mouth and throat or lead to suffocation.
Pre-dosage
Switch on the machine and wait until the start button is lit green.
Adhere to the dosing instructions on the packaging of the detergent. The machine's tank capacity is
approx. 35 litres.
Place approx. 100 g of detergent powder in the machine. This corresponds to a dosing of approx. 3 g/l.
Then start the wash cycle immediately to mix the detergent powder with the water.

Rinse aid and detergent
49
Additional dosage
At each wash cycle approx. 2.0-2.5 litres of fresh water enter the commercial dishwasher, which must be
mixed with detergent powder.
After 5 wash cycles, fill approx. 30 - 40 g detergent powder into the machine.
5.2.2 Automatic dosing of liquid detergent
The dosing amount is set by the authorised service technician when commissioning the machine (12.6).
5.3 Suction tube with level control
Caution
Only use the suction tube with sufficiently stable containers. Narrow and tall containers can
tip if the suction tube is pulled.
Do not place the suction tube for the rinse aid in the container with detergent or vice versa.
Do not pull unnecessarily on the suction hose or main power cable, as this may lead to a
defect.
According to the model, with your machine you may have one or more suction tubes. The suction tube is
already connected to the machine.
Figure 1:
Suction tube for detergent
Blue cap
Figure 2:
Suction tube for rinse aid
Red cap
Figure 1 Figure 2
Servicing and maintenance
Rinse the suction tube at every container change under running water.
Remove crystallised detergent residue.
Ensure that the vent hole (a) in the cap is not obstructed.
Put the suction tube back into the container. Slide the cap downwards until
the container opening is closed.
5.4 Changing the detergent product
Caution
Mixing different detergents can lead to efflorescence that can lead to a failure of the
dispenser pump. This is applicable even if the new detergent is from the same manufacturer.
The dosing tubes and the detergent dispenser pump must be thoroughly rinsed with water
before the new detergent is used.
A new detergent product usually requires a new setting of the dispenser pump. Assign the required work
to an authorised service technician to attain good cleaning results.
If this is not done, Miele’s warranty and product liability is invalidated.
GB

Internal water softener (special equipment)
50
Procedure:
Danger
When handling chemicals, observe the safety notes and the dosage recommendations on
the packaging.
Wear protective clothing, protective gloves and protective goggles when handling chemicals.
Do not mix different detergents.
Remove the suction tube from the container and place it in a water-filled container.
Rinse the dosing tubes and the detergent dispenser pump with water. To do this, use the prime dispenser
pump function several times (10). The frequency depends on the length of the dosing tubes.
Place the suction tube in the new detergent container.
Use the prime dispenser pump function several times (10), to replace the water in the dosing tubes
with detergent.
5.5 Priming the dispenser pumps
Dispenser pumps must be primed if air gets into the dosing tube because the containers were not
exchanged or refilled in time (10).
6 Internal water softener (special equipment)
By softening the inlet water, limescale build-up in the machine and on the dishes is avoided. For the internal
water softener to work correctly, the salt container must be filled with regeneration salt.
INFO At the commissioning of the machine the authorised service technician measures the water
hardness and saves it in the machine's electronic control unit.
6.1 Lack of salt display
A pictogram appears on the screen when an empty salt container requires refilling. The
display disappears after filling the salt container, as soon as approx. 3 wash cycles have
been completed and part of the salt has been dissolved.
6.2 Filling regeneration salt
Caution
Possible risk of damage to the water softener
Chemicals such as detergent and rinse aid inevitably lead to damage to the water softener. Fill
only with regeneration salt or pure evaporated salt.
Possible malfunction of the water softener
Do not fill with other salts (e.g. table salt cleaning or de-icing salt). These can contain water-
insoluble components. Fill only with fine-grained salt (max. 1 - 4 mm grain size).
INFO Because of their size, salt tablets are not suitable.
Proceed in accordance with Figures A1 to A5.
IMPORTANT Figure A2 is only relevant for the first filling.
Caution
Risk of rust formation in the filling area
Immediately after filling, start a wash cycle to rinse off any salt residue.

Operation
51
7 Operation
7.1 Before switching on the machine
Caution
Possible risk of damage due to suction of items from within the machine e.g. pieces of
cutlery
The pump inlet filter protects the circulating pump and the drain pump. Operate the machine
only with the pump inlet filter fitted.
Open the on-site water stop cock.
Switch on the on-site mains disconnector.
For your own safety, test the on-site residual-current circuit
breaker (FI).
Open the hood.
Remove the filter cylinder (1).
Check whether the pump inlet filter (2) is fitted. If it is not
fitted there will be an error message when the machine is
switched on.
Insert the filter cylinder (1).
Check whether the spray arms (top and bottom) are fitted
and properly engaged.
Close the hood.
Check whether sufficient detergent and rinse aid are
present in the containers. Replace the containers in time
so that the cleaning results are not affected.
7.2 Switching on the machine and preparing it for operation
7.3 Washing
Caution
Possible risk of scalding from hot wash water
Keep children away from the commercial dishwasher. The wash water in the interior is at a
temperature of approx. 62 °C.
Do not open the hood while the machine is washing. There is a risk of the hot wash water
spilling out. Stop the wash programme before doing so (7.3.7).
Possible risk of injury
Do not place any objects on the hood.
Arrange sharp, pointed utensils so that they do not cause injury.
Possible failure of the wash programme due to heavy dirt ingress
Pre-rinse all dishes and pans with cold water. Remove food residues.
IMPORTANT Do not place any heavy objects on the hood, so that the hood can always be opened easily
and cannot close accidentally on its own.
GB

Operation
52
7.3.1 Arranging the dishes in the washing basket
Dishes and cutlery
Place plates with their front side facing forwards.
Place cups, bowls and pots rim down.
Wash cutlery either standing in the cutlery holder or lying in a shallow basket. Make sure that they are not
too close together. Soak cutlery, before you wash it.
Position knives and other sharp objects in the cutlery holder with the handle up in order to prevent
injuries.
Glasses
Pour out drink residue (not in the machine).
Remove scraps of paper.
Rinse off ash with water.
Place glasses rim down.
Keep space between the glasses, so they do not rub against each other. This will avoid scratches.
For tall glasses choose a basket with appropriate divisions so that the glasses are held in a stable
position.
7.3.2 Using automatic hood start
Select a wash programme (4.5).
INFO The wash programme remains pre-selected until a different wash programme is selected.
Slide the washing basket into the machine.
Check that the upper and lower spray arms are free to turn.
Close the hood.
The wash programme is started.
7.3.3 Interrupting automatic hood start
Do not close the hood completely, but only as far as the lower detent position.
INFO The automatic hood start can be deactivated by an authorised service technician (P516). Every
wash programme must then be started by pressing the start button.
7.3.4 Changing the wash programme
Select a different wash programme by tapping the button (4.5).
The background of the button becomes white.
Close the hood.
The wash programme is started.
7.3.5 Intensive programme
If the stains are particularly dried in, the wash programme can be intensified.
Close the hood and press the start button twice in short succession ("double click").
In the info field, the "Brush" icon flashes.
INFO The intensive programme only affects the current wash programme and is then
automatically deactivated again.
7.3.6 End of the programme
The start button flashes green, as soon as the wash programme has ended and the hood remains
unopened.
Only for the PG 8172 ECO model
At first, the start button flashes blue-green.At the same time, the steam and vapours are extracted from
the washing compartment and the heat energy stored in them is recovered for the next wash cycle. If
possible, do not open the hood yet at this time.
The start button flashes green as soon as the warm air is extracted.

Operation
53
7.3.7 Prematurely terminating the wash programme
A wash programme can be terminated in the following ways:
Press the start button
On the screen, tap on the button of the selected wash programme
7.3.8 Periods of disuse
Do not switch the machine off during periods of disuse.
Close the hood as far as the detent position to prevent it cooling down.
7.4 Switching off
Switch the machine off at the end of the working day using the self-cleaning programme (8.1.2), so that it
is cleaned and emptied every day.
INFO If you use the On/Off button, the tank stays filled but will no longer be kept at temperature. If the
tank temperature has dropped too much before the machine is switched on again, the machine will
be emptied automatically and filled again.
GB

Servicing and maintenance
54
8 Servicing and maintenance
Warning
Do not spray the machine and the surrounding area (panels, base) using a water hose,
steam-jet air ejector or high-pressure cleaner.
Ensure that the base of the machine is not flooded when cleaning the floor in order to
prevent an uncontrolled inflow of water.
Warning
Wear protective clothing and protective gloves before touching parts in contact with wash water
(filters, spray arms, ...)
When cleaning the machine Interior, wear protective gloves to avoid injury caused by sharp-
edged trays.
8.1 Daily cleaning
8.1.1 During operation
Remove the filter cylinder, clean if necessary and re-insert it.
8.1.2 Self-cleaning programme at the end of the working day
The machine is equipped with a self-cleaning programme that assists you when you are cleaning the inside
of the machine. After the first programme step, the self-cleaning programme is interrupted so that you can
remove the filter cylinder and the tank cover and clean them. If you do not follow this step, the self-cleaning
programme will continue automatically after 30 seconds.
Proceed in accordance with Figures B1 to B27.

Servicing and maintenance
55
Terminating the self-cleaning programme:
Press this button.
The background of the button becomes blue.
The machine is filled again.
8.1.3 Cleaning the interior
Caution
Ensure that there are no rusty foreign objects in the machine which can also cause the
"stainless steel rust-free" material to start rusting. Rust particles can come from non-rust-free
dishes, cleaners, damaged wire baskets or non-rust-protected water lines.
The following materials must not be used for cleaning:
High-pressure cleaner
Detergents containing chlorine or acid
Cleaning sponge or wire brush containing metal
Abrasives or abrasive cleaners
Remove dirt with a brush or a cloth.
8.1.4 Cleaning the exterior of the machine
Clean the display with a damp cloth.
Clean the external surfaces using a stainless steel cleaner and stainless steel conditioner.
8.2 Weekly cleaning
Cleaning the spray arms (top and bottom)
Proceed in accordance with Figures C1 to C6.
Cleaning the spray arm bearings (top and bottom)
Proceed in accordance with Figures D1 to D9.
GB

Servicing and maintenance
56
8.3 Monthly cleaning
Cleaning the dirt trap
Close the on-site stop cock for the water supply.
Clean the dirt filter in the dirt trap.
Only for the PG 8172 ECO model
Cleaning the ECO module
Slide the ventilation grille upwards and remove it.
Clean the space behind the ventilation grille with a cleaning
cloth.
Wash the ventilation grille in the machine and then refit.
Open the hood.
Spray the suction channel with warm water. Use a water hose,
not a high-pressure cleaner.
Clean the suction channel with a cleaning cloth.
8.4 Descaling
If the machine is operated with water of high hardness without water treatment, descaling is necessary at
regular intervals (12).
8.5 Maintenance by the Service Department
We recommend that you have an authorised service technician carry out the maintenance of the machine at
least twice a year so that vulnerable parts can be checked and replaced accordingly. Original spare parts
must be used for repairs and the replacement of worn parts.
Worn parts are, for example:
Dosing tubes
Bearings of the spray arms
Hood seal
Water supply hose
In the electronic control unit, the number of hours of operation or wash programmes before
servicing should be performed can be programmed and at what number of hours of operation
remaining the symbol for maintenance/service is displayed. If necessary, have this function
activated by an authorised service technician.

Malfunctions
57
9 Malfunctions
This chapter explains the remedies for malfunctions. The causes and remedies are specified in the tables.
Contact an authorised service technician if you cannot rectify the error yourself.
Danger
Danger to life: Live components!
Do not open any machine covers or machine parts if it requires tools. There is danger of
shock.
Only an authorised service technician should carry out work on the electrical system. The
machine must first be disconnected from the mains.
Faults are displayed in the info field in the form of pictograms. In addition, every malfunction will be recorded
in the hygiene journal (12) and can be retrieved in info level 2 (11). In both places, an entry is also
made as soon as the malfunction has been removed.
Pictogram Meaning Possible cause Remedy
Hood is open Programme start with open hood Close the hood.
Detergent is empty1Change the detergent container.
Rinse aid is empty 1Change the rinse aid container.
Lack of water
Water stop cock closed Open the water stop cock.
The dirt filter in the dirt trap is
blocked
Remove and clean the dirt filter
(8.3).
Solenoid valve defective or
blocked
Contact an authorised service
technician for the repair.
Internal water
treatment is
exhausted
Low salt Fill the salt reservoir with
regenerating salt (6.2).
External partial or
full demineralisation
unit blocked
Exchange the partial
demineralisation unit; exchange
the core of the full
demineralisation unit.
Service interval is
running out
The number of operating hours /
washing cycles set in the controls
has been reached.
INFO: This function is not
activated in factory.
Contact an authorised service
technician for the maintenance.
Need for descaling
The number of operating hours set
in the control system has been
reached.
Starting the descaling programme
(12.5).
1is only displayed, when a suction tube with level control is used and connected to the machine.
GB

Malfunctions
58
Pictogram Meaning Possible cause Remedy
Lower spray arm is
blocked
Spray arm is not correctly
engaged Correctly engage the spray arm.
Spray arm obstructed by, e.g. a
piece of cutlery Remove the obstruction.
Spray arm blocked by soiling Clean the spray arm bearings
(8.2).
Upper spray arm is
blocked
Spray arm obstructed by, e.g. high
dishes Remove the obstruction.
Spray arm blocked by soiling Clean the spray arm bearings
(8.2).
Filter cylinder
blocked Heavily contaminated filter cylinder Remove, clean and replace the filter cylinder.
Energy optimization1
On-site energy optimisation
equipment switches individual
electrical consumers (heating
elements).
Wait until the on-site energy
optimisation equipment switches
off.
Pump inlet filter not
fitted
Missing pump inlet filter
The machine switches off
after 30 seconds and will not
be filled.
Fit the pump inlet filter and, if
necessary, switch the machine on
again.
INFO: When the prompt is
downgraded three times, the
machine can be switched on.
Pump inlet filter not
fitted despite three
prompts
Missing pump inlet filter
IMPORTANT: The circulating
pump and drain pump may get
damaged by drawing in, for
example, pieces of cutlery.
Fit pump inlet filter.
Automatic hood
opening 2defective. Defective motor Contact an authorised service
technician for the repair.
Tank will be filled A wash programme is started
while the machine is refilling
Wait till the machine has been
filled.
Malfunction with
error code Various
Display the error code (9.1) and
assign the repair to an authorised
service technician.
1is displayed only when the machine is connected to an equipment with energy optimisation
2Special equipment

Malfunctions
59
9.1 Accessing the error code
In the display, the following symbol flashes:
Tap the following buttons in turn:
The error codes are displayed in area (a).
INFO Malfunctions already resolved are also displayed
here (e.g. ERR 1 OK).
Contact an authorised service technician for the repair.
Press the button (b) twice to leave the menu.
9.2 Poor cleaning result
Possible cause Remedy
The dishes do not get clean.
No or low detergent dosing
Set the dosing amount as per the
manufacturer’s specifications (12.6).
Check the dosing lines (for kinks,
breakage, ...)
Exchange the container, if empty.
Dishes incorrectly sorted Do not stack dishes one over the other.
Nozzles of the spray arms
blocked
Remove the spray arms and clean the
nozzles (8.2).
Temperatures too low Test the temperatures (10).
Excessive dirt Pre-rinse dishes.
Deposits form on the dishes.
In case of limescale deposits:
The water is too hard
Check the water preparation.
Carry out basic cleaning.
With starch deposits:
Temperature of the manual pre-
cleaning (spray) is higher than
30 °C
Lower the temperature of the manual pre-
cleaning.
Carry out the basic cleaning programme
(12.5.2).
The dishes do not dry on their
own.
No or low rinse aid dosing
Set the dosing amount as per the
manufacturer’s specifications (12.6).
Check the dosing lines (for kinks,
breakage, ...)
Exchange the container, if empty.
Rinse temperature too low Contact an authorised service technician.
For machines without an internal water softener:
INFO The water quality affects the washing and drying performance. We therefore recommend from a
total hardness of more than 3° dH (0.53 mmol/l) that the machine is supplied with softened water.
GB