Miele PG 8591 User manual

Operating instructions
Washer-disinfector
PG8591
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, NZ
M.-Nr. 10 608 003

2

Contents
3
Notes about these instructions...................................................................................... 7
Definition of terms ............................................................................................................. 7
Intended use .................................................................................................................... 8
Guide to the machine...................................................................................................... 9
Overview............................................................................................................................ 9
Control panel..................................................................................................................... 10
LEDs in buttons................................................................................................................. 11
User profiles..................................................................................................................... 12
Warning and Safety instructions.................................................................................... 13
Symbols on the machine................................................................................................... 18
Using the machine........................................................................................................... 20
Display illustrations............................................................................................................ 20
Switching on...................................................................................................................... 21
Switching off...................................................................................................................... 21
Auto-off function ............................................................................................................... 21
Ready for use .................................................................................................................... 21
Display interface................................................................................................................ 22
Menu operation ................................................................................................................. 22
Settings in the menu ......................................................................................................... 23
Symbols on the display ..................................................................................................... 24
Opening and closing the door........................................................................................ 25
Electronic door locking...................................................................................................... 25
Opening the door .............................................................................................................. 25
Closing the door................................................................................................................ 25
Opening the door using the emergency release .............................................................. 26
Water softener ................................................................................................................. 27
Water hardness ................................................................................................................. 27
Setting the water hardness level ....................................................................................... 28
Filling the salt reservoir...................................................................................................... 30
Add salt reminder .............................................................................................................. 32
Areas of application ........................................................................................................ 33
Mobile units, baskets, modules and inserts...................................................................... 33
Adjusting the upper basket ............................................................................................... 34
Wash pressure measurement............................................................................................ 36
Test point for measuring wash pressure ....................................................................... 36
Preparing the load ............................................................................................................. 37
Recontamination ........................................................................................................... 39
Protein test .................................................................................................................... 39
Instruments........................................................................................................................ 40
Transmission instruments.................................................................................................. 40
Mouth specula................................................................................................................... 41
Mouth rinsing cups............................................................................................................ 41
Chemical processes and technology ............................................................................ 42

Contents
4
Adding and dispensing chemical agents ...................................................................... 45
Dispensing systems .......................................................................................................... 45
Labelling of the siphons ................................................................................................ 45
DOS modules .................................................................................................................... 46
Connecting a DOS module ........................................................................................... 46
Rinsing agent..................................................................................................................... 47
Adding rinsing agent ..................................................................................................... 47
Refill indicator................................................................................................................ 48
Dispensing rinsing agent ............................................................................................... 48
Neutralising agent ............................................................................................................. 49
Refilling neutralising agent ............................................................................................ 49
Refill indicator................................................................................................................ 50
Dispensing neutralising agent ....................................................................................... 50
Instrument care products .................................................................................................. 50
Cleaning agent .................................................................................................................. 51
Replenishing liquid cleaning agent................................................................................ 51
Refill indicator................................................................................................................ 52
Dispensing liquid cleaning agent .................................................................................. 52
Operation.......................................................................................................................... 53
Selecting a programme ..................................................................................................... 53
Starting a programme ....................................................................................................... 53
Starting a programme using delay start ........................................................................ 53
Drying ............................................................................................................................ 55
Programme sequence indicator ........................................................................................ 57
At the end of the programme ............................................................................................ 57
Cancelling a programme ................................................................................................... 58
Programme cancelled due to a fault ............................................................................. 58
Cancelling a programme manually ................................................................................ 58
System messages ............................................................................................................. 59
Changing the filter ......................................................................................................... 59
Cleaning the filter combination and tubular filter .......................................................... 60
Low fill levels ................................................................................................................. 60
Wash pressure and spray arm monitoring ........................................................................ 61
Settings ......................................................................................................................... 62
Delay start ......................................................................................................................... 63
Drying ................................................................................................................................ 64
DOS venting ...................................................................................................................... 66
Language ....................................................................................................................... 67
Time of day........................................................................................................................ 68
Volume............................................................................................................................... 71
Further settings .............................................................................................................. 72
Code.................................................................................................................................. 74
Entering the PIN code ................................................................................................... 74
Date ................................................................................................................................... 76
Log book ........................................................................................................................... 78
Report................................................................................................................................ 79
Temperature unit................................................................................................................ 79
Programme settings .......................................................................................................... 79
Air cooling ......................................................................................................................... 80

Contents
5
Release programme .......................................................................................................... 81
Moving a programme: allocating programme selection buttons....................................... 82
Test programme ................................................................................................................ 83
Filter maintenance ............................................................................................................. 83
Cleaning the filters in the wash cabinet ........................................................................ 83
Activating and setting the interval ................................................................................. 83
Interface ............................................................................................................................ 85
Water hardness ................................................................................................................. 88
Display: Temperature......................................................................................................... 88
Display brightness and contrast........................................................................................ 89
Switch off after .................................................................................................................. 90
Ready for operation....................................................................................................... 90
Auto-off function ........................................................................................................... 90
Switching off after activating......................................................................................... 91
Software version................................................................................................................ 91
Programme settings........................................................................................................ 92
Adjusting programme settings .......................................................................................... 92
Programme structure......................................................................................................... 92
Programme header........................................................................................................ 92
Programme blocks ........................................................................................................ 93
Opening the menu............................................................................................................. 94
Reset programme.............................................................................................................. 94
Altering a programme ....................................................................................................... 95
Allocating wash blocks.................................................................................................. 95
Change water quantity .................................................................................................. 96
Increasing drainage time ............................................................................................... 97
Drying unit ..................................................................................................................... 98
Process documentation.................................................................................................. 102
Outputting cycle reports retrospectively ........................................................................... 105
External software........................................................................................................... 105
Report printer ................................................................................................................ 105
Maintenance .................................................................................................................... 106
Periodic checks ................................................................................................................. 106
Routine checks.................................................................................................................. 107
Cleaning the filters in the wash cabinet ............................................................................ 107
Cleaning the spray arms.................................................................................................... 109
Cleaning the machine........................................................................................................ 111
Cleaning the control panel ............................................................................................ 111
Cleaning the door and the door seal............................................................................. 111
Cleaning the wash chamber.......................................................................................... 111
Cleaning the door front ................................................................................................. 111
Preventing re-soiling...................................................................................................... 111
Checking mobile units, baskets, modules and inserts...................................................... 112
Changing the HEPA filter................................................................................................... 113
Process validation ............................................................................................................. 115
Problem solving guide .................................................................................................... 118
Technical faults and messages ......................................................................................... 118
Dispensing/Dispensing systems ....................................................................................... 119
Insufficient salt/Water softener.......................................................................................... 120

Contents
6
Cancel with fault code....................................................................................................... 121
Process-related faults and messages ............................................................................... 125
Door................................................................................................................................... 127
Unsatisfactory cleaning and corrosion.............................................................................. 127
Spray arm monitoring/wash pressure ............................................................................... 130
Water inlet and drainage ................................................................................................... 131
Noises................................................................................................................................ 131
Printer/interface ................................................................................................................. 132
Problem solving guide .................................................................................................... 133
Cleaning the drain pump and non-return valve................................................................. 133
Cleaning the water intake filters ........................................................................................ 134
Retrofitting the large-surface filter................................................................................. 134
After sales service........................................................................................................... 135
Contacting the Customer Service Department ................................................................. 135
Notification of serious incidents ........................................................................................ 135
Software version................................................................................................................ 136
Installation........................................................................................................................ 137
Installation and levelling .................................................................................................... 137
Building under a continuous worktop ............................................................................... 138
Removing the lid........................................................................................................... 138
Preventing heat build-up ............................................................................................... 138
Electromagnetic compatibility (EMC) ................................................................................ 140
Electrical connection ...................................................................................................... 141
Equipotential bonding connection .................................................................................... 141
Peak-load negotiation ....................................................................................................... 142
Plumbing .......................................................................................................................... 143
Connection to the water supply ........................................................................................ 143
Retrofitting the large-surface filter................................................................................. 144
Connecting the drain hose ................................................................................................ 146
Technical data.................................................................................................................. 147
Programme chart ............................................................................................................ 148
Caring for the environment ............................................................................................ 150
Disposal of the packing material ...................................................................................... 150

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
Cleaning machine In these operating instructions, the washer-disinfector is referred to
as “the cleaning machine”.
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 Miele washer-disinfector is a Class IIb medical device (Directive
93/42/EEC).
This Miele washer-disinfector can be used to clean, rinse and
thermally disinfect a wide range of reprocessable medical devices for
dental use. Information issued by the manufacturers of medical
devices (ENISO17664) must be heeded.
Instruments such as dental instruments, suction instruments,
transmission instruments etc. can be reprocessed in this washer-
disinfector.
UK only: This washer-disinfector is NOT intended for reprocessing
transmission instruments such as turbines, hand-pieces and
contra-angles.
Reprocessing items by machine achieves reproducible results and
should be used in preference to processing them by hand. Where
disinfection is required for the protection of staff and/or patients, a
thermal disinfection programme, e.g. the Vario TD programme should
be selected.
According to the A0 concept described in EN ISO 15883-1, thermal
disinfection occurs at 90°C (+ 5 °C, - 0 °C) with 5 min holding time
(A0 3000), depending on the disinfection result required. The efficacy
standard A0 3000 is suitable for deactivating the HBV virus.
Regional and/or other official directives may apply (CFPP, HTM or
relevant technical memorandums in the UK). Refer to your country's
local and national health and safety regulations and guidelines.
The cleaning programme must be chosen according to the type of
soiling and load being processed.
The agents used for reprocessing the products should be selected to
suit the level of cleaning required.
The cleaning result must ensure that items can be disinfected
correctly, that subsequent sterilisation can be carried out and that the
items can be used again safely.
Medical devices are best processed using the Vario TD programme
where applicable.
The use of a suitable carrier (mobile unit, module, insert, etc.) is
important to ensure the adequate cleaning of the load. Examples are
given in the section “Areas of application”.
This machine is programmed to carry out the final rinse with mains
water or with processed water of a quality to suit the application (e.g.
purified water, fully demineralised water or demineralised water).
This machine complies with EN ISO 15883 for validation purposes.
This device is designed to wash and disinfect surgical instruments
before endpoint sterilisation.

Guide to the machine
9
Overview
aComfort door locking mechanism
bModule slot for a communication module
(Back, top right)
cTest point for validation
(Top, front right; only visible with lid
removed)
dUpper machine spray arm
eRails for baskets and mobile units
fLower machine spray arm
gData plate
hRinsing agent reservoir
iSalt reservoir
jFilter combination
kPlinth panel with service flap
lOn the back:
– Second data plate
– Electrical and plumbing connections
– Siphon(s) for external supply containers
– Connections for external dispensing
modules (DOS modules)
mPlumbing connections for mobile units
and baskets

Guide to the machine
10
Control panel
abutton (on/off)
For switching the machine on and off.
b,andbuttons
Programme selection buttons.
The button assignment can be configured.
cProgramme list button
For accessing the list of all additional programmes.
dDisplay
User interface and programme sequence display.
eandarrow buttons
For navigating in the user interface.
fCancel button
For cancelling a process in the user interface.
No programme interruption.
gSettings button
For accessing the system settings menu.
hStart/Stop button
For starting or cancelling a programme.
iDoor release button
For opening the door before or after a programme sequence.
jDrying button
For switching drying on and off.
kOK button
For selecting or confirming entries in the user interface
(acknowledge or save).
lService interface
Testing and transmission point for the Customer Service
Department.

Guide to the machine
11
LEDs in buttons
The buttons on the control panel have LEDs (Light Emitting Diodes). They 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. 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 or the
programme settings are being changed.
button ON The additional “Drying” function has been activated
for the selected programme (not available for all
programmes, see “Programme chart”).
OFF The additional “Drying” function has been
deactivated.
Start/Stop
button
ON A programme is 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.
button ON The door is closed (locked) and there is no
programme running.
FLASHES A programme has finished and the door is closed
(locked).
OFF A programme is running or the door is open
(unlocked).

User profiles
12
Daily operators
For day-to-day use, operators must be instructed on the basic
functions and how to load the cleaning machine and must also be
trained regularly. They must have knowledge of machine reprocessing
of medical devices.
Day-to-day work is carried out using the user level and in the Settings
 list. The list 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
medical devices.
Alterations to the reprocessing process or adaptations to the cleaning
machine, e.g. to accessories used or on-site conditions, require
additional specific knowledge of the machine.
Validation processes assume specialist knowledge about machine
reprocessing of medical devices, the processes involved and
applicable standards and legislation.
The
Further settings list incorporates all administrative processes and
settings. This is protected from unauthorised access by a PIN 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 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 and disinfection processes are only designed for
medical devices which are designated reprocessable by the
manufacturer. Instructions issued by load and instrument
manufacturers must be heeded.
 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.
 Some metal parts pose a risk of injury/being cut. Wear cut-
resistant protective gloves when transporting and setting up the
machine.
 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).

Warning and Safety instructions
14
 A damaged or leaking machine can pose a threat to your safety.
Always switch off a damaged or leaking machine immediately and
call the Miele Customer Service Department.
 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.
 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.
 When operating the washer-disinfector, bear in mind the possibility
of high temperatures. If the door is opened bypassing the safety lock,
there is a danger of burning, scalding and chemical burns.
 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 medical devices, in order to
protect patients, and 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 in the disinfection
programmes must be routinely confirmed by the user. The process
must be thermo-electrically validated on a regular basis, and checked
against documented control results.
 For thermal disinfection, use temperatures and temperature holding
times to achieve the required infection prophylaxis in accordance with
current health and safety regulations.
 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.
 Under certain circumstances, process chemicals may damage the
machine. Users are urged to follow the recommendations issued by
manufacturers of process chemicals.
Contact the Miele Customer Service Department in the event of
damage and any suspicion of material incompatibility.
 Instrument care products based on paraffin oils (white oils) can
damage the elastomers and plastic in the machine. Such care
products must not be dispensed as chemical agents in this machine
even if they are recommended for machine use by the care product
manufacturer.
 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.

Warning and Safety instructions
16
 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 disinfection and 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”.
 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.
 Particles ≥0.8mm are removed by the filters in the wash cabinet.
Smaller particles may find their way into the circulation system. For
this reason, processing of loads with narrow openings requires
additional filtering of the wash water.
 In critical applications where very stringent requirements have to
be met, it is strongly recommended that all the relevant factors for the
process, such as cleaning agents, water quality, etc., are discussed
with Miele.
 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.

Warning and Safety instructions
17
 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.
 Follow the installation instructions in the operating and installation
instructions.

Warning and Safety instructions
18
Use of components and accessories
 Only use original spare parts and accessories from the
manufacturer, which are suitable for the application they are required
for. Model designations are available from Miele.
 Only use Miele mobile units, baskets, modules and inserts with this
washer-disinfector. 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.
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!

Warning and Safety instructions
19
Disposing of your old machine
 Please note that the machine may contain contamination from
blood and other bodily fluids, pathogens and facultative pathogens,
and must be decontaminated before disposal.
For environmental and safety reasons, dispose of all process
chemical residues in accordance with safety regulations (wear safety
goggles and gloves).
Remove or disable the door lock prior to disposal of the machine, so
that children cannot become trapped inside. Then make appropriate
arrangements for safe disposal of the machine.

Using the machine
20
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 may differ from the actual display screens shown on
the machine.
Vario TD Dental
Temperature
Duration Min50
55 °C
The control buttons are shown next to the display. The ,  and
Start/Stop buttons are not shown.