Miele PG 8504 User manual

Operating instructions
Commercial dishwasher for laboratory
glassware and utensils
PG8504
To avoid the risk of accidents or damage
to the machine, it is essential to read
these instructions before it is installed
and used for the first time.
en - GB, AE, AU, IE, NZ
M.-Nr. 10 089 652

2

Contents
3
Notes about these instructions...................................................................................... 7
Definition of terms ............................................................................................................. 7
Intended use .................................................................................................................... 8
Guide to the machine...................................................................................................... 9
Machine overview.............................................................................................................. 9
Control panel..................................................................................................................... 10
LEDs in the buttons........................................................................................................... 11
User profiles..................................................................................................................... 12
User profiles ...................................................................................................................... 12
Warning and Safety instructions.................................................................................... 13
Symbols on the machine................................................................................................... 18
Using the machine........................................................................................................... 19
Display illustrations............................................................................................................ 19
Switching on...................................................................................................................... 20
Switching off...................................................................................................................... 20
Auto-off function ............................................................................................................... 20
Ready for use .................................................................................................................... 20
Display interface................................................................................................................ 21
Menu operation ................................................................................................................. 21
Settings in the menu ......................................................................................................... 22
Options.......................................................................................................................... 22
Symbols on the display ..................................................................................................... 23
Commissioning................................................................................................................ 24
Installation and connection ............................................................................................... 24
Procedure .......................................................................................................................... 24
Opening and closing the door........................................................................................ 28
Opening the door .............................................................................................................. 28
Closing the door................................................................................................................ 28
Water softener ................................................................................................................. 29
Water hardness ................................................................................................................. 29
Setting the water hardness level ....................................................................................... 30
Filling the salt reservoir...................................................................................................... 32
Add salt reminder .............................................................................................................. 34
Areas of application ........................................................................................................ 35
Mobile units, baskets, modules and inserts...................................................................... 35
Adjusting the upper basket ............................................................................................... 36
Preparing the load ............................................................................................................. 38
Wash load.......................................................................................................................... 41
...wide necked ............................................................................................................... 41
...narrow necked............................................................................................................ 41
Chemical processes and technology ............................................................................ 42
Adding and dispensing chemical agents ...................................................................... 46
Dispensing systems .......................................................................................................... 46
Labelling of the siphons ................................................................................................ 46

Contents
4
DOS modules .................................................................................................................... 47
Connecting a DOS module ........................................................................................... 47
Dispensing liquids ......................................................................................................... 47
Dispensing neutralising agent or rinsing agent ................................................................. 48
Neutralising agent ......................................................................................................... 48
Rinsing agent................................................................................................................. 48
Filling the reservoir ........................................................................................................ 49
Cleaning agent .................................................................................................................. 51
Replenishing liquid cleaning agent................................................................................ 51
Refill indicator................................................................................................................ 52
Dispensing liquid cleaning agent .................................................................................. 52
Dispensing powder cleaning agents ............................................................................. 53
Operation.......................................................................................................................... 55
Selecting a programme ..................................................................................................... 55
Starting a programme ....................................................................................................... 55
Starting a programme using delay start ........................................................................ 55
Programme sequence indicator ........................................................................................ 57
At the end of the programme ............................................................................................ 57
Interrupting a programme.................................................................................................. 58
Cancelling a programme ................................................................................................... 58
Programme cancelled due to a fault ............................................................................. 58
Cancelling a programme manually ................................................................................ 58
Settings ......................................................................................................................... 59
Delay start ......................................................................................................................... 60
DOS venting ...................................................................................................................... 61
Language ....................................................................................................................... 62
Date ................................................................................................................................... 63
Time of day........................................................................................................................ 65
Volume............................................................................................................................... 68
Further settings .............................................................................................................. 69
Code.................................................................................................................................. 71
Enter code ..................................................................................................................... 71
Release.......................................................................................................................... 72
Log book ........................................................................................................................... 74
Temperature unit................................................................................................................ 75
Moving a programme: allocating programme selection buttons....................................... 76
Additional functions........................................................................................................... 77
Reset ............................................................................................................................. 78
Increased water level..................................................................................................... 79
Interim rinse................................................................................................................... 79
Dispensing systems ...................................................................................................... 80
Temperature / time ........................................................................................................ 84
Release programme .......................................................................................................... 86
Water hardness ................................................................................................................. 86
Display: Temperature......................................................................................................... 87
Display brightness and contrast........................................................................................ 88
Switch off after (Auto-Off function).................................................................................... 89
Activating standby......................................................................................................... 90
Factory default................................................................................................................... 91

Contents
5
Software version................................................................................................................ 91
Maintenance .................................................................................................................... 92
Periodic checks ................................................................................................................. 92
Routine checks.................................................................................................................. 93
Cleaning the filters in the wash cabinet ............................................................................ 93
Cleaning the spray arms.................................................................................................... 95
Cleaning the machine........................................................................................................ 97
Cleaning the control panel ............................................................................................ 97
Cleaning the door and the door seal............................................................................. 97
Cleaning the wash chamber.......................................................................................... 97
Cleaning the door front ................................................................................................. 97
Preventing re-soiling...................................................................................................... 97
Checking mobile units, baskets, modules and inserts...................................................... 98
Problem solving guide .................................................................................................... 99
Technical faults and messages ......................................................................................... 99
Dispensing/Dispensing systems ....................................................................................... 100
Insufficient salt/Water softener.......................................................................................... 102
Cancel with fault code....................................................................................................... 103
Process-related faults and messages ............................................................................... 104
Unsatisfactory cleaning and corrosion.............................................................................. 105
Water inlet and drainage ................................................................................................... 107
Noises................................................................................................................................ 108
Problem solving guide .................................................................................................... 109
Cleaning the drain pump and non-return valve................................................................. 109
Cleaning the water intake filters ........................................................................................ 110
Retrofitting the large-surface filter................................................................................. 110
After sales service........................................................................................................... 111
Contacting the Customer Service Department ................................................................. 111
Software version................................................................................................................ 112
Installation........................................................................................................................ 113
Installation and levelling .................................................................................................... 113
Building under a continuous worktop ............................................................................... 114
Removing the lid........................................................................................................... 114
Electromagnetic compatibility........................................................................................... 115
Electrical connection ...................................................................................................... 116
Equipotential bonding connection .................................................................................... 116
Peak-load negotiation ....................................................................................................... 117
Plumbing .......................................................................................................................... 118
Connection to the water supply ........................................................................................ 118
Retrofitting the large-surface filter................................................................................. 119
Connecting the drain hose ................................................................................................ 121
Programme chart ............................................................................................................ 122
Programme selection depending on the accessories used .............................................. 124
Technical data.................................................................................................................. 125

Contents
6
Caring for the environment ............................................................................................ 126
Disposal of the packing material ...................................................................................... 126

Notes about these instructions
7
Important warnings
Information which is important for safety is highlighted in a thick
framed box with a warning symbol. This alerts you to the potential
danger of injury to people or damage to property.
Read these warning notes carefully and observe the procedural
instructions and codes of practice they describe.
Notes
Information of particular importance that must be observed is
highlighted in a thick framed box.
Additional information and comments
Additional information and comments are contained in a simple
frame.
Operating steps
Operating steps are indicated by a black square bullet point.
Example:
 Select an option using the arrow buttons and save your choice with
OK.
Display
Certain functions are shown in display messages using the same font
as that used for the function itself in the display.
Example:
Settings  menu.
Definition of terms
Load items The term “load items” is used wherever the items to be processed are
not defined in any further detail.
Wash water The term “wash water” is used for the mixture of water and process
chemicals.

Intended use
8
This cleaning machine is designed to reprocess laboratory glassware,
utensils and similarly categorised components using water-based
media. These include:
- Vessels such as beakers, flasks, cylinders and test tubes
- Measuring vessels such as measuring cylinders and volumetric
flasks
- Dishes such as petri dishes and watch glasses
- Plates such as slides and sequencing plates
- Small items such as lids, magnetic stirring rods, spatulas and
stoppers
- Other items such as boxes, plastic flasks and containers, metal
parts, pipe and hose pieces and funnels
Reprocessing encompasses the cleaning and rinsing of the laboratory
glassware, utensils and components listed above.
Pipettes are excluded from this list. This cleaning machine is not
designed for reprocessing pipettes.
Reprocessing is carried out in conjunction with:
- Process chemicals which are tailored to the result of the
reprocessing
- Load carriers which are tailored to the load items
Observe the information issued by the manufacturer of the load
items.
The cleaning machine is designed for use in laboratories (e.g.
chemical and biological laboratories in universities and research
institutes).
The cleaning machine is suitable for removing water-soluble soiling.
The cleaning machine is not suitable or only suitable to a limited
extent for removing soiling that is difficult to dissolve in water or
which is not soluble in water, such as oils and fats.
The cleaning machine is not suitable for removing soiling which is
soluble in water at temperatures ≥70°C, such as agar.
Inappropriate use
The cleaning machine must not be used for any purposes other than
the appropriate use described. This applies in particular to:
- The reprocessing of medical devices that can be reprocessed
- Use in the catering industry
- Domestic use

Guide to the machine
9
Machine overview
aDoor lock
bTest point for performance checks
(top, front right; only visible with lid
removed)
cUpper machine spray arm
dRails for baskets and mobile units
eLower machine spray arm
fData plate
gContainer for neutralising agent or rinsing
agent
hSalt container
iDispenser for powder cleaning agent
jFilter combination
kPlinth cover
lOn the back:
– Second data plate
– Electrical and water connections
– Connection for an external dispensing
module (DOS module)
mWater connections for mobile units and
baskets

Guide to the machine
10
Control panel
a On/Off button
For switching the machine on and off.
b,  and  buttons
Programme selection buttons.
Can be configured.
c Programme list button
For accessing the list of all programmes.
dDisplay
User interface and programme sequence display.
e and  arrow buttons
For navigating within the display.
f Cancel button
For cancelling a process
(not for cancelling programmes).
gStart/Stop button
For starting or cancelling a programme.
hOK button
For selecting or confirming entries in the user interface
(acknowledge or save).
i PC/Optical interface
This is used by Miele Service technicians to run diagnostic checks
and can also be used to update programming data in the future.

Guide to the machine
11
LEDs in the buttons
The buttons on the control panel have LEDs (Light Emitting Diodes)
that indicate the status of the machine.
Button LED Status
 button ON The machine is switched on.
FLASHES The machine is ready for use.
OFF The machine is switched off.
Programme
selection
buttons
, 
and 
ON The respective programme has been
selected. At the end of the programme
the LED will remain lit until a different
programme is selected.
OFF The programme is not selected or the
programme settings are being selected.
 button ON A programme has been selected from
the programme list with this button. At
the end of the programme the LED will
remain lit until a different programme is
selected.
OFF No programme has been selected from
the list with this button or the
programme settings are being selected.
Start/Stop
button
ON Programme running.
FLASHES
GREEN
A programme has been selected but not
yet started.
FLASHES
RED
A fault has occurred (see “Problem
solving guide”).
OFF A programme has finished.

User profiles
12
User profiles
Daily operators Daily operators must be instructed in operating and loading the
machine and trained regularly to guarantee safe daily use. They
require knowledge of machine reprocessing of laboratory glassware
and utensils.
Tasks for daily routine operation are located in the Settings  menu.
This menu is freely accessible to all users.
Administration More advanced tasks, e.g. interrupting or cancelling a programme,
require more detailed knowledge about the machine reprocessing of
laboratory glassware and utensils.
Alterations or adaptations of the machine, e.g. accessories used or
on-site conditions require additional specific knowledge of the
machine.
Validation processes assume specialised knowledge of the machine
reprocessing of laboratory glassware and utensils, of the processes
involved and of applicable standards and legislation.
Administrative processes and settings are allocated to Further
settings. This is protected from unauthorised access by a code.

Warning and Safety instructions
13
This machine complies with all statutory safety requirements.
Inappropriate use can, however, lead to personal injury and
material damage.
Read these instructions carefully before using it for the first time to
avoid the risk of accidents and damage to the machine.
Keep these instructions in a safe place where they are accessible
to users at all times.
Correct application
 Use of the cleaning machine is only permitted for the applications
expressly approved in the operating instructions. Alterations or
conversion of the machine, or using it for purposes other than those
for which it was intended, are not permitted and could be dangerous.
The cleaning processes are only designed for laboratory glassware
and utensils which are designated as reprocessable by the
manufacturer. The information provided by the manufacturer of the
load items must be observed.
 This machine is intended for indoor use only.
Risk of injury
Please pay attention to the following notes to avoid injury
 The machine may only be installed, commissioned, repaired and
maintained by the Miele Customer Service Department or a suitably
qualified service technician. A Miele service contract is recommended
to ensure full compliance with the normative and regulatory
provisions. Incorrect repairs can cause considerable danger to users.
 Do not install the machine in an area where there is any risk of
explosion or of freezing conditions.
 In order to reduce the risk of water damage, the area around the
machine should be limited to furniture and fittings that are designed
for use in commercial environments.
 If the machine is built under, it must only be installed under a
continuous worktop run which is firmly secured to adjacent units to
improve stability.
 The electrical safety of this machine can only be guaranteed when
correctly earthed. It is essential that this standard safety requirement
is met. If in any doubt, please have the on-site wiring system tested
by a qualified electrician. Miele cannot be held liable for the
consequences of an inadequate earthing system
(e.g. electric shock).
 A damaged or leaking machine could be dangerous and
compromise your safety. Disconnect the machine from the mains
immediately and call the Miele Service Department.

Warning and Safety instructions
14
 Label cleaning machines which have been taken out of operation
and secure them against being switched on again without
authorisation. The cleaning machine may only be put back into
operation once it has been successfully repaired by the Miele
Customer Service Department or by an appropriately qualified
specialist.
 Personnel operating the machine should be trained regularly.
Untrained personnel must not be allowed access to the machine or
its controls.
 Only use process chemicals which have been approved by their
manufacturer for the relevant application. The manufacturer of the
process chemicals is liable for any negative influences on the material
of the load and the machine.
 Take care when handling chemical agents. These may contain
irritant, corrosive or toxic ingredients.
Please observe the chemical agent manufacturer's safety instructions
and safety data sheets.
Wear protective gloves and goggles.
 The machine is designed for operation with water and
recommended additive chemical agents only. Organic solvents and
flammable liquid agents must not be used in it.
This could cause an explosion, damage rubber or plastic components
in the machine and cause liquids to leak out of it.
 The water in the cabinet must not be used as drinking water.
 Take care not to inhale powder agents. Chemical agents can cause
chemical burns in the mouth and throat or lead to asphyxiation.
 Do not lift the machine by protruding parts such as the control
panel or the opened service flap as these could be damaged or torn
off.
 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 pointed ends. Position them in
the machine so that you will not hurt yourself or create a danger for
others.
 Broken glass can result in serious injury when loading or
unloading. Broken glass items must not be processed in the machine.
 The machine can get hot when in use. Be careful not to scald or
burn yourself or come into contact with irritant substances when
opening the door.
 Should personnel accidentally come into contact with toxic
vapours or chemical agents, follow the emergency instructions given
in the manufacturer's safety data sheets.

Warning and Safety instructions
15
 Mobile units, baskets, modules, inserts and the load 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.
 Never clean the machine or near vicinity with a water hose or a
pressure washer.
 The machine must be disconnected from the mains electricity
supply before any maintenance or repair work is carried out.
Quality assurance
The following points should be observed to assist in maintaining
quality standards when processing laboratory glassware and
utensils to avoid damage to the loads being cleaned.
 If it is necessary to interrupt a programme in exceptional
circumstances, this may only be done by authorised personnel.
 The standard of cleaning and disinfection must be routinely
confirmed by the user. The process should be validated on a regular
basis, and checked against documented control results.
 Make sure items being washed are suitable for machine
reprocessing and are in good condition. Plastic items must be
thermally stable. Nickel plated items and aluminium items can be
machine processed using special procedures only.
Items containing iron, and soiling containing residual rust must not be
placed in the cabinet.
 Chemical agents can, in certain circumstances, cause damage to
the machine. Always follow the recommendations of the chemical
agent manufacturer.
In case of damage or doubt about compatibility, please contact
Miele.
 Abrasive substances must not be placed in the machine as they
could cause damage to the mechanical components of the water
supply. Any residues of abrasive substances on items to be washed
must be removed without trace before reprocessing in the machine.
 Pre-treatments with cleaning or disinfecting agents can create
foam, as can certain types of soiling and chemical agents. Foam can
have an adverse effect on the cleaning result.
 Processes must be set up such that foam cannot escape from the
wash cabinet. It would hinder the correct functioning of the machine.
 The process used must be monitored on a regular basis by the
supervisor to check foaming levels.
 To avoid the risk of damage to the machine and any accessories
used with it caused by chemical agents, soiling and any reaction
between the two please read the notes in “Chemical processes and
technology”.

Warning and Safety instructions
16
 Where a chemical agent is recommended on technical application
grounds (e.g. a cleaning agent), this does not imply that the
manufacturer of the machine accepts liability for the effect of the
chemical on the items being cleaned.
Please be aware that changes in formulation, storage conditions etc.
which may not be publicised by the chemical manufacturer, can have
a negative effect on the cleaning result.
 When using process chemicals, always consult the instructions
issued by individual manufacturers. Process chemicals must only be
used for the purpose they are designed for by the manufacturer to
avoid any material damage or the occurrence of very strong chemical
reactions (e.g. oxyhydrogen explosion).
 Always follow the relevant manufacturer's instructions on storage
and disposal of chemical agents.
 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 chemical agents, water quality etc. are discussed
with the Miele Application Technology specialists.
 If the cleaning result is subject to particularly stringent
requirements, e.g. in chemical analysis, the operator must carry out
regular quality control to ensure that required standards of cleanliness
are being achieved.
 The mobile units, baskets, modules and inserts that hold the load
must be used only as intended.
Hollow items must be thoroughly cleaned, internally and externally.
 Secure small and light items with cover nets or place in a mesh
tray for small items, so that they do not block the spray arms.
 Empty any containers or utensils before loading them.
 The amount of residual solvents and acids on items going into the
cabinet should be minimal.
There should be no more than a trace of any solvents with a flash
point of below 21°C.
 Chlorous solutions, in particular hydrochloric acid, must not be
placed in the cabinet.
 Ensure that solutions or steam containing chlorides or hydrochloric
acid do not come into contact with the stainless steel outer casing of
the machine in order to avoid any damage through corrosion.
 After any plumbing work the water pipework to the machine will
need to be vented. If this is not done, components can be damaged.
 The gaps between a built-in machine and adjacent cabinetry must
not be filled e.g. with silicone sealant as this could compromise the
ventilation to the circulation pump.

Warning and Safety instructions
17
 Follow the installation instructions in the operating and installation
instructions.
Safety with children
 Children must be supervised in the vicinity of the machine. Do not
allow children to play with the machine. They could get locked inside
it.
 Children must not use the machine.
 Keep children away from chemical agents. These can cause
burning in the mouth, nose and throat if swallowed, or inhibit
breathing. Keep children away from the machine when the door is
open. There could still be residual chemical agent in the cabinet.
Observe the safety data sheets for the chemical agent and seek
medical advice immediately if a child has swallowed chemical agent
or got it in the eyes.
Use of components and accessories
 Only Miele accessories should be connected to this machine. They
must be suitable for the application they are required for. Consult
Miele for details on the type of accessories that can be used.
 Only use Miele mobile units, baskets, modules and inserts with this
machine. Using mobile units, baskets, modules and inserts made by
other manufacturers, or making modifications to Miele accessories
can cause unsatisfactory cleaning results, for which Miele cannot be
held liable. Any resultant damage would not be covered by the
guarantee.

Warning and Safety instructions
18
Symbols on the machine
Warning:
Observe the operating instructions!
Warning:
Danger of electric shock!
Warning: Hot surfaces:
It can be very hot inside the wash cabinet
when the door is opened!
Risk of being cut:
Wear cut-resistant protective gloves when
transporting and setting up the machine!
Disposing of your old machine
 Please note that the machine may have contamination from blood,
bodily fluids, pathogenic germs, facultative pathogenic germs,
genetically modified material, etc. in it and must be decontaminated
before disposal.
For environmental and safety reasons ensure the machine is
completely drained of any residual water, chemical residues and
cleaning agent. Observe safety regulations and wear safety goggles
and gloves.
Make the door lock inoperable, so that children cannot accidentally
shut themselves in. Then make appropriate arrangements for its safe
disposal.

Using the machine
19
Control panel
The machine is operated exclusively by the buttons located on the
stainless steel surfaces either side of the display. The display is not a
touch screen.
A light touch on the relevant button is sufficient to operate the
functions. The buttons can also be pressed and held for approx. 20
seconds.
Display illustrations
All display illustrations shown in these operating instructions are
examples which can be different from the actual display screens
shown.
Short
Temperature
Duration Min20
60 °C
The control buttons, with the exception of the  and the Start/Stop
buttons, are shown next to the display.

Using the machine
20
Switching on
The machine must be connected to the electrical supply.
Press the button until the button’s LED lights up.
After that, the display shows the following:
PG 8504
As soon as the machine is ready for operation, the display changes to
show the last selected programme, e.g.:
Short
Temperature
Duration Min20
60 °C
If the machine is being used for the first time, or if the factory default
settings have been reinstated, some basic parameters, e.g.
language, date, time, etc., must first be set. To enable this, the
display automatically changes to the relevant screen.
Switching off
Press the button.
Auto-off function
To save energy, the machine has an automatic switch-off function
(Auto-off function). If the machine has not been used for a specific
time period, it switches itself off automatically, see “Further settings/
Switch off after”.
Use the button to switch the machine on again.
Ready for use
When it is ready for use, the machine remains switched on, the
button flashes and the time is shown on the display. Pressing any
button reactivates the machine. Standby can be switched on and off
as required, see “Further settings/Switch off after”.