Miele professional G 7881 User manual

G 7881 Dental Washer-Disinfector
Installation and In-Service Manual

Basic Commissioning Checklist for the
Miele G 7881 Dental-Disinfector
Customer Name _____________________________________________________ Date ________________
Address __________________________________________________________________________________
City ____________________________________________ State ___________ ZIP_______________
Contact Person __________________________________ Contact Number _______________________
Machine Model ___________________________ Machine Serial Number __________________________
Detergent type _____________________________ Neutralizer type ____________________________
Miele Service Order # _____________________________________________________________________
The purpose of this checklist is to verify the critical systems of the Miele G 7881 dental
disinfector meet the factory specications. Contact Miele Professional Technical Support with
any questions: ProSer[email protected] or 1-800-991-9380.
1. Examine exterior packaging for damage.
• If damaged, notify client, carrier and call 800-666-0486 for Miele’s returns department for further instructions.
2. Uncrang instrucons.
• Carefully slip o the two packing straps and lift cardboard box o of machine.
• Properly dispose of all packaging materials. All of the protective packaging material is environmentally
safe and can be recycled.
• Carefully lift machine from pallet. Do not lift machine by its lid!
3. Remove operang instrucons manual from the rear of the machine, save for reference.
Note: You will need the operating manual and installation diagram for the remaining steps.
Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
4. Open machine door via the emergency release and remove accessory items.
(i.e. water inlet lter, drain hose, warranty card, water softener funnel, red empty 5L neutralizer container, steam de-
ector, etc.)
• Slowly pull the emergency release cable located at the bottom of the machine (see illustration).

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
5. Remove styrofoam blocks from upper basket support and discard Neutralizer container.
6. Plumbing codes in certain areas may require the use of an oponal cool-down kit to reduce the
temperature of the waste water. The cool-down kit includes hardware for mounting and install
instructions.
Connect drain hose to the rear of the machine using enclosed hose clamp
All plumbing work must be performed by licensed professionals and adhere to all applicable local, state, and federal
codes. (Part or Item # ProfDrainTempKit) Contact Miele Technical Service for ordering and installation information.
• The drainage system is fitted with a non-return valve which prevents dirty water from flowing back
into the machine via the drain hose.
• G 7881 has 1 drain hose.
• The drainage system must be able to take a minimum drainage flow of 4 gal/min.
• The on site drain connection point should be located between 1 ft. and 3 ft. above
the lower edge of the machine.
• If it is lower than1 ft., lay the hose in a curve at a height of at least 1 ft.
• The drain hose is approx. 5 ft. long, is exible and has an internal diameter of 7/8 in. It
must not be shortened. Hose clamps are supplied for securing it in position.
• The drainage system must not exceed 12 ft. length.
The machine should preferably be connected to a separate drainage system such as a standpipe or oor drain.
However, if local code permits the drain hose can be connected to an under-sink ¾”tail-piece.

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
7. If applicable, connect the oponal DOS K 60/1 power supply and feed hose
(Please refer to DOS K 60/1 Installation Instructions that are shipped with the unit)
8. Installaon of the water intake hose connecons.
All plumbing work must be performed by licensed professionals and adhere to all applicable local, state, and federal
codes.
The Miele G 7881 Washer-Disinfector is equipped with a DI Water intake (marked “H2O PUR”) hose and a cold tap water
intake (marked with a blue sticker) hose. Leading instrument manufacturers recommend a DI water rinse as the nal
processing step prior to sterilization. Rinsing with DI water ensures the elimination of detergent residues and naturally
occurring minerals which could lead to instrument stains and corrosion. However, if water quality is not an issue, the
machine can be installed using the cold tap water intake only.
If a DI water source is not available, do not connect the DI Water intake (marked “H2O PUR”) hose. Allow this water hose
to remain secured to the back of the washer.
Further programming MUST be carried out and will be explained further in this procedure.
Acceptable water pressure (ow rate) for both intake valves: 10-147 psi each
Recommended water pressure (ow rate) for both intake valves: 25-60 psi each
• DI Water Intake: ¾” GHT female hose thread, connected to external DI water supply source
• Cold Tap Water Intake: ¾” GHT female hose thread, connected to cold tap water source
• Use the proper in-line cartridge lter: Matte nish for the DI intake, chrome nish for the cold tap intake

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
9. Attach either proper plug to power cord or hard wire to electrical supply.
All electrical work must be performed by licensed professionals and adhere to all applicable local, state, and federal
codes.
The machine comes equipped for a connection to 208V, 60Hz, 1 phase power supply. It is equipped with a 6ft. long,
10/3 AWG power cord, without a plug. The installer may either install an electrical plug or hard wire the machine into
an electrical junction box that has been installed on the wall or in a cabinet adjacent to the machine. It should be
connected to the main power supply with a 2 pole breaker rated for 30amps. If the supplied voltage is above 228VAC
a step-down transformer will be required. Contact a local licensed electrician for the proper step-down transformer
required!!!
Voltage:
Frequency:
Rated Load:
Circuit Breaker:
Black:
White:
Green:
208 VAC +10% / -5% (228.8VAC / 197.6VAC) 60Hz
Possible conversion to three-phase; contact Miele Technical support for additional
information. The conversion diagram and the wiring diagram is secured to the inner
side of the service panel.
60Hz
6.0 kW
2 x 30 A
Connect to L1 (hot)
Connect to L2 (hot)
Connect to GND (ground)
WARNING – THIS APPLIANCE MUST BE GROUNDED
The machine must only be operated with the voltage, frequency, and fusing shown on the data plate located
on the rear of the machine and on the base (behind the service panel).
10. Install steam deector in rear of cabinetry, located over steam condenser, if applicable.
Note: A steam deector protects the counter-top and comes packaged with the unit. Refer to operation instructions
for more information.
11. Adjust the feet to the proper height/install machine on solid non-carpeted surface.
• Undercounter
Note: Removal of lid not necessary for all undercounter installations.
• Open the door, remove xing screws on the left and right sides using a Phillips head screwdriver.
• Pull the machine lid approx. ¼”forwards, lift it upwards, and remove.
• Adjust feet to proper height.
• Slide machine into place, making sure machine is level in all directions.
• Secure machine to the front edge of the worktop using screws to the left and right of the front trim.
Do not use silicone sealant in gaps between the machine & neighboring units.
• Secure machine to counter-top, making certain to not pinch hoses.
• Freestanding use mounting kit if local codes dictate securing the G 7881 washer (Item #00253531)
12. The door should be adjusted so that it does not fall open or swing shut.
If necessary, adjust the door by turning the Torx 20 screw in the upper left door sill. Turn counterclock-
wise to decrease tension. Turn clockwise to increase tension. See service manual for further information.
Note: Do not use a power screwdriver when performing this procedure!

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
13. Tesng the supplied water hardness
Note: If not using water softener, please set and save the water softener setting at 0.
Before using the machine for the first time, the water softener must be programmed according to the hardness of the
incoming water. You can determine water hardness with a simple test kit or by contacting your local water author-ity.
Note: the G 7881 is factory-set at a water hardness level of 19 gr/gal (340 pp). If your water hardness level is not the
default, the G 7881 must be reprogrammed to the proper setting. Reference the Water Hardness Table below for the
correct value.
Water Hardness Table
A. Filling the salt reservoir:
Only Miele approved reactivation salt should be used in the G 7881, the Miele salt used is the
ProCare Universal 61, 3 bags of 2Kg packages come in the box.
Do not use other types of salt, e.g. table salt, agricultural or gritting salt. These could contain
components which are insoluble in water and could damage the water softener. If in doubt,
consult Miele’s Professional Department.
The salt reservoir holds approximately 2.5 kg of salt.
Settings
0-20
gr/gal
1-20
ppm
CaCo3
0 1 20
0 2 40
0 3 50
4 4 70
5 5 90
6 6 110
7 7 130
8 8 140
9 9 160
10 10 180
11 11 200
12 12 220
13 13 230
14 14 250
15 15 270
16 16 290
17 17 310
18 18 320
19 19 340
20 20 360
Settings
0-20
gr/gal
1-20
ppm
CaCo3
21 21 380
22 22 400
23 23 410
24 24 430
25 25 450
26 26 470
27 27 490
28 28 500
29 29 520
30 30 540
31 31 560
32 32 580
33 33 590
34 34 610
35 35 630
36 36 650
37 37 670
38 38 680
39 39 700
40 40 720
Settings
0-20
gr/gal
1-20
ppm
CaCo3
41 41 740
42 42 760
43 43 770
44 44 790
45 45 810
46 46 830
47 47 850
48 48 860
49 49 880
50 50 900
51 51 920
52 52 940
53 53 950
54 54 970
55 55 990
56 56 1010
57 57 1030
58 58 1040
59 59 1060
60 60 1080

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
14. Programming the water hardness and acvate soener if necessary (connued)
A. Filling the salt reservoir
• Remove the bottom basket from the machine.
• Unscrew the salt reservoir cap.
Before lling the salt reservoir with reactivation salt for
the rst time, ll it with water till water spills out.
• Place the funnel provided in place (see illustration).
• Carefully ll the reservoir with 1 bag of ProCare Universal
61 salt. Displaced water will run out as it is being lled.
• Wipe any residual salt o the screw threads on the socket.
• Screw the cap on rmly.
• Immediately after this step: Run the “Rinse” program
to remove any traces of salt from the cabinet.
Note: There may be a delay before the “Rinse” program
starts due to the reactivation of the water softener.
B. Setting the water softener
• Turn o the machine with the “On/O” button.
• Turn the program selector to the “Stop” position.
• Press and hold the “Display” and “Start” buttons at the same time.
Simultaneously turn the machine on with the “On/O” button. The current program
status “P...” will appear in the display and the “Fill/Drain” indicator will illuminate.
• Press the “Drying” button once.“E01” (programming level 1) will appear in the display.
• Turn the program selector one switch position clockwise (1 o’clock position).
The number “19” will appear in the display (this indicates the factory water hardness
setting in gr/gal, equivalent to 340 ppm).
• Press the “Display” button as many times as necessary or hold it in until the
required value (hardness level in gr/gal) appears in the display. Once the number “60”
has been reached the counter will begin again at “0.
• Press the “Start” button. “SP” will appear in the display.
• Press the “Start” button again.
The setting will now be stored in memory. The display will go out. For future servicing, it is
useful to make a note of your water hardness level.
• Document the water hardness level here and on page 14 the operating manual:
__________ gr/gal or __________ ppm
Please reference page 14 of the operating manual for setting the water softener hardess.
C. Salt Indicator (see illustration)
Reactivation takes place automatically during a program.
The “Recharging”indicator (#1 in illustration) illuminates.
When the salt reservoir is empty, the “Recharge”
indicator (#2 in illustration) illuminates to remind the end user
to ll the reservoir.

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
15. Programming for cold tap water connecon only or both cold tap water and DI water
connecons.
1. Turn o the machine with the “On/O” button.
2. Turn the program selector to the “Stop” position.
3. Press and hold the “Display” and “Start” buttons at the same time.
4. Simultaneously turn the machine on with the “On/O” button.
The current program status“P...” will appear in the display and the “Fill/Drain” indicator will illuminate.
5. Press the “Drying” button once.“E01” (programming level 1) will appear in the display.
6. Turn selector dial to 11 o’clock position.
If machine is installed with only the cold tap water intake supply:
7. Press the “Display” button as many times as necessary until the display shows the number“111.”
Once the number “111” has been reached the G 7881 will deactivate the DI Intake Valve.
8. Press the “Start” button. “SP” will appear in the display.
9. Press the “Start” button again.
10. The setting has been saved.
Or
If machine is installed with both the DI Water & cold tap water intake supplies:
7. Press the “Display” button as many times as necessary until the display shows the number“110.”
Once the number “110” has been reached the G 7881 will activate the DI Intake Valve for the
nal rinse.
8. Press the “Start” button. “SP” will appear in the display.
9. Press the “Start” button again.
10. The setting has been saved.

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
16. Prime the pumps, Neutralizer and DOS K60/1
Note: Only use detergent and neutralizer recommended by Miele.
Be cautious when handling liquid agents and additives as they may contain irritant or corrosive ingredi-
ents. Follow the manufacturer’s safety instructions and relevant health and safety procedures carefully.
Wear protective gloves and goggles.
A. Priming the neutralizer dispensing system DOS 3
• Turn the program selector to the “Stop” position.
• Turn o the machine.
• Press and hold the “Display” and “Start” buttons at the same time.
Simultaneously turn the machine on with the “On/O” button. The current
program status “P...” will appear in the display and the “Fill/Drain” indicator will illuminate.
• Press the “Drying” button twice, “E02” (programming level) will appear in the display.
• Turn the program selector to the 5 o’clock position. “do3” appears in the display.
• Press the “Display” button. The dispensing system will be primed automatically. “do3”
will appear in the display when priming is nished. The number “0” will appear in the
display when priming is nished.
• Press the “Start” button. “SP” will appear in the display.
• Press the “Start” button again to exit programming mode.
Note: Run the “Rinse”program to dilute and drain away any agents that may remain in the wash cabinet
every time the dispensing system has been primed. Please reference page 40 of the operating manual for
priming the DOS 3 neutralizer system.
B. Relling the neutralizing agent
When the “Neutralizer” indicator illuminates (seen right)
• Replace the current neutralizer container with
a full one.
• The indicator light should go out.
• If the container has been allowed to run dry,
the light will not go out until the priming
process is performed.
C. Setting & priming the optional DOS K 60/1 detergent dispensing system
As a separate option, the G 7881 can be tted with the DOS K 60/1 liquid detergent dispenser. The DOS unit is
supplied with its own installation instruction manual. Follow the installation instructions for connecting the
dispensing option. Once the DOS K60/1 is connected to the G 7881 secure the detergent supply tube in the
detergent bottle.

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
17. Prime the pumps (connued)
C. Setting & priming the optional DOS K 60/1 detergent dispensing system (continued)
Detergents:
ProCare Dent 10 A - 5 Liter canister, Alkaline detergent, liquid concentrate.
For automatic treatment of high quality stainless steel dental instruments in Miele
Professional washer-disinfector.
Setting the detergent dosage:
• Turn the program selector to the “Stop” position.
• Turn o the machine with the “On/O” button.
• Press and hold the “Display” and “Start” buttons at the same time.
Simultaneously turn the machine on with the “On/O” button.
• The current program status “P...” will appear in the display and the “Fill/Drain:
indicator will illuminate.
• Press the “Drying” button twice. “E02” (programming level 2) will appear
in the display.
• Turn the program selector to “Wash” (2 o’clock position).
• Press the “Display” button as many times as necessary to set the dosage
amount .40 (50 ml). Call Miele professional technical support for more information.
• Turn the program selector to the 1 o’clock position. “do1” appears in the display.
• Press the “Display” button. The dispensing system will be primed automatically.
“0” will appear in the display when the priming is finished. Ensure that priming has
occurred by visually inspecting machine chamber for dispensed detergent. If priming has
not occurred, repeat priming step. The number “0” will appear in theEJTQMBZXIFO
QSJNJOHJTGJOJTIFE
• Press the “Start” button. “SP” will appear in the display.
• Press the “Start” button again. The setting will now be stored in memory. The display will go out.
• After priming, run the“Rinse”program to remove detergent residues from the wash chamber.
Note: If detergent is run empty, reference page 38 of the G 7881 operating instructions
for priming the DOS 1 detergent system.

18. Add the Rinse Aid (ProCare Dent 40)
Rinse aid is necessary to ensure water does not cling to and leave marks on items during the drying phase. It also
enables items to dry faster aer they have been washed. Rinse aid is poured into the storage reservoir and a pre-
set amount is dispensed automatically during the nal rinse. e rinse aid reservoir holds approximately 180 ml.
Open the door fully
B. Adding Rinse Aid (ProCare Dent 40)
• Pour rinse aid into the storage container until the level indicator is dark (see
illustration). Use a funnel if necessary
• Screw the cap back on and wipe up any spilled rinse aid (ProCare Dent 40)
• Wait until the “rinse aid” indicator on the control panel illuminates before
adding more rinse agent
• Run a rinse cycle aer lling the rinse agent reservoir with ProCare Dent 40
Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
C. Setting the rinse agent dosage
• e dosage adjuster in the opening of the rinse agent dispenser has settings
from 1ml to 6ml. Factory default is 3ml.
• Use a higher setting if spots are le on the instruments aer drying cycle.
• If surfaces become cloudy and or streaky, use a lower setting
A. Rinse Aid indicator. (ProCare Dent 40)
• e reservoir must be lled with rinse aid (ProCare Dent 40) when the
“Rinse Aid” indicator illuminates (as seen in the illustration)ere is also a
level indicator for the rinse aid (ProCare Dent 40) on the inside of the door.
• Unscrew the rinse aid reservoir cap (See illustration)

Completed by ________________________________ Date ________________________________
Miele • 9 Independence Way • Princeton, NJ 08540 • 800-991-9380 • Fax [phone] • [email protected]
19. Load baskets and inserts into the machine
The G 7881 dental disinfector normally requires a top and bottom basket. Various inserts and special baskets are also
available for a wide variety of instruments.
A. Preparation
• Ensure that no acid or solvent residue, especially hydrochloric acid or chlorides, gets
into the wash cabinet.
B. Load the bottom basket
• Insert lower basket with handle, circled in photo,
facing out of the machine.
• Add all applicable inserts.
C. Load the top basket into the wash chamber
• Add all applicable inserts.
Baskets and Inserts - Types: A = Accessory E = Insert O = Upper Basket U = Lower Basket
Model Item Number Type Comments
D. Adjust the top basket coupling
• Fully insert top basket, ensuring water coupling connects with water inlet in the top of the
chamber. Not inserted into machine, this water coupling must be 4-5 mm higher than the water
connection inlet. If it is not, loosen the plastic nut, push the adapter 4-5 mm higher than the
water connection inlet, and tighten the plastic nut. Please reference page 26 of the operating
manual for adjustment of the middle basket coupler.
20. Run the Vario Disinfecon program cycle; program will take ~50 minutes
• If successful, the G 7881 is now ready to operate for the dental pracce.
Operational Check – Please check the appropriate response. If “No” specify in comments
Function Product Name Yes No N/A Comments
Liquid Detergent Dosing
Liquid Neutralizer Dosing
Vario TD program completed without any faults?
Did the machine attain the expected temperature?

21. Instrucon in the operaon/use of the machine
Category Subject Completed
Operation explained using
the Operating Manual
Machine function
Programs and how to select them
Interrupting or canceling a program
Recharging the water softener
Replenishing detergents and rinse agent
Maintenance & Care
Daily cleaning of sump lters and non return
valve.
Regular checks based on operating manual
checklist
Maintenance Intervals / PM’s
Use of Baskets & Inserts Water connections / spring coupler adapters
Loading
Personnel Trained
Name Position User
Prole*
Training
Hours Signature
1
2
3
4
5
6
7
8
9
10
*User Proles: O - Operator; S - Supervisor; M - Manager; A - Administrator
Miele recommends refresher training every 12 months. Call Miele Professional Service for scheduling at
1-800-991-9380.
This washer-disinfector is only certied for use in the areas of application specied by the manufacturer.
Repairs must be carried out by authorized, trained technicians only.
Customer Name _________________________________________________ Date __________________
Signature of Supervisor/Operator ___________________________________________________________
Department _____________________________________ Position _________________________________
Checklist completed by: