Miele G 7881 Service Manual

							1 Technical Data
Fig. 1:Steam Condenser
1 Steam condenser
2 Steam vent from machine
3 Cold-water inlet from WaterProof System
4 Water from steam condenser to flow meter
5 DOS K 60 drain pump for steam condenser
6 Drain hose connected to machine drain
7 Intake hose from steam condenser
8 Overflow, drains into drip pan
Descriptive Technical Documentation
062-2 DTD no. 62-7881
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							2 Function
2.1 Steam Condenser Function
The purpose of the steam condenser mounted on the rear of the machine is to
prevent the excessive discharge of steam. It also serves as a vent for the cabinet.
2.2 Water Intake
Water is brought into the steam condenser during a fill cycle via the cold-water
inlet valve. This water is in a cooling plate that is separate from the steam that
comes from the machine. The water coming in displaces the water in the steam
plate. The water that is displaced is then brought into the sump via the water
diverter to be used in the cycle. The water that is brought in to the steam plate is
by thecold-waterinlet valveonly.
2.3 Drain
The condensed steam goes to the condensate collector. The water that collects
there is then drained out of the condenser by the DOS G 60 pump that is draining
the water into the machine drain hose.
Descriptive Technical Documentation
DTD no. 62-7881 062-3
18.09.2013, US_am This information should not be duplicated or passed on without Miele approval. All rights reserved. 
						

							4 Service
4.1 DOS 60/30 Pump Removal
ARemove the bottom pan.
ADisconnect the 2 hoses from the pump.
ARemove the 2 screws securing the pump's mounting bracket to the rear
panel.
ARemove the pump with mounting bracket.
Descriptive Technical Documentation
062-4 DTD no. 62-7881
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							063 Steam Condenser
G 7882 CD, G 7883 CD
1 Technical Data
x
Fig. 1:Steam Condenser, CD Models
1 Spray nozzle
2 Steam condenser
3 Drain outlet with non-return valve
4 Condenser overflow level switch
5 Condenser drain pump
6, 7 Condenser solenoid valves
Descriptive Technical Documentation
DTD no. 62-7881 063-1
18.09.2013, US_am This information should not be duplicated or passed on without Miele approval. All rights reserved. 
						

							2 Function
2.1 Overflow Level Switch, B1/2
x
Fig. 2:Drying Unit Drip Tray
1 Level switch - Overflow, B1/2
2 Drain pump, condensate pump, M13
3 Inlet valve - Steam condenser, cold, 1Y22 and 2Y22
The hose connection for the overflow level switch (063 Fig. 2, Pos. 1) is in the
intake connection just before the condensate pump (063 Fig. 2, Pos. 2) in the
water circuit. The overflow level switch itself is positioned slightly raised on the
rear of the drying unit. If the water in the steam condenser rises above a certain
level, the overflow level switch acts to close the solenoid valves 1Y22 and 2Y22
(063 Fig. 2, Pos. 3). The condensate pump will continue to operate.
Descriptive Technical Documentation
063-2 DTD no. 62-7881
This information should not be duplicated or passed on without Miele approval. All rights reserved. 18.09.2013, US_am 
						

							070 Fascia Panel, Electronic
G 7881, G 7882, G 7883
x
Descriptive Technical Documentation
DTD no. 62-7881 070-1
18.09.2013, US_am This information should not be duplicated or passed on without Miele approval. All rights reserved. 
						

							2 Function
2.1 Fascia Panels
2.1.1 Individual Fascia Panels
x
Fig. 1:G 7881 Fascia Panel
Fig. 2:G 7882 Fascia Panel
Fig. 3:G 7883 Fascia Panel
2.1.2 Optical Indicators
x
Fig. 4:Optical Indicators
1 Digital display
2 Program function buttons
3 Fault and monitoring indicator LEDs, red
4 Program sequence LEDs, yellow
5 Program selector switch with settings equivalent to a clock face
x
kSoftener reactivation
IPre-wash
lMain wash
Descriptive Technical Documentation
070-2 DTD no. 62-7881
This information should not be duplicated or passed on without Miele approval. All rights reserved. 18.09.2013, US_am 
						

							HFinal rinse
cDrying
rFinish
Table 1:Program Sequence LEDs
p/qWater intake/drainage fault
kSalt container empty
wNeutralizing agent empty
H/ CHEM Rinse aid/chemical disinfectant empty
8/ DOS Optical interface/DOS dispenser module empty
Table 2:Fault and Monitoring Indicator LEDs
2.1.3 Digital Display
The digital display can be used to show one of three current cleaning parameters
–the current suds temperature in °C, the current wash block or the elapsed time
of the cleaning program in operation in minutes–as desired. During a cleaning
program, these parameters can be selected by pressing the top program function
button as appropriate.
2.2 Electronic (1N1) Connections
2.2.1 Electronic EP 081 with Relay Module EGL 011
x
Fig. 5:Electronic (1N1) EP 081 with EGL 011 Plug Allocation
1 Plug connection ST 4 - Check NTC sensor 2R30 / Connection to
electronic EZL 030/031 (flow meter input)
2 Plug connection ST 2 - Door opening switch 2S4 / Reed switch -
Rinse aid, B8/1
3 Plug connection ST 5 - Data link to additional module 2N1 and
printer interface 3N1
Descriptive Technical Documentation
DTD no. 62-7881 070-3
18.09.2013, US_am This information should not be duplicated or passed on without Miele approval. All rights reserved. 
						

							4 Plug connection ST 1 - Connection plug from EP 081 to relay
module EGL 011
5 Plug connection ST 6 - Connection plug from EP 081 to relay
module EGL 011
6 Plug connection ST 5 - Voltage supply for EGPL from transformer
T1
7 Plug connection ST 3 - Circulation pump speed sensor B3/9
8 Plug connection ST 2 - Dispenser system socket, X1/2 / Reed
switch - Reactivation salt, B8/2
9 Plug connection ST 2 - Level switch B1/10 / Relay solenoid 2K1/1 /
NTC sensor 1R30
10 Plug connection ST 4 - Relay solenoid 1K1/1
11 Plug connection ST 8 - NTC sensor - Drying
12 Plug connection ST 7 - Solenoid valve Y50 / Solenoid valve Y53
13 Plug connection ST 7 - Solenoid valve Y38 / Solenoid valve Y51
14 Plug connection ST 7 - Solenoid valve Y20 (optional intake pump
M7 for non-pressurized demineralized water)
15 Plug connection ST 7 - Solenoid valve Y12
16 Plug connection ST 3 - Solenoid valve Y1
17 Plug connection ST 3 - Circulation pump M6 / Level switch B1/1 /
Level switch B8/3 / Drain pump M8
2.3 Wash Block Codes
G 7881
x
1 = Wash
2 = Rinse
3 = Drain
4 = Disinfection vario
5 = Disinfection 93 ºC-10’(10 minutes)
Table 3:Wash Block Codes
Descriptive Technical Documentation
070-4 DTD no. 62-7881
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							2.4 Special Features of Infection Protection Programs
Infection protection programs, e.g.,Disinfection 93°C 10 min, are programs
whose wash and cleaning parameters are set by law. It is not permitted to modify
these programs in any way. Some functions or requirements for fault indications
vary from those for other programs and are therefore always specially mentioned.
2.5 EGPL 081 Programming
2.5.1 General Programming Information
If several values are to be modified, these can be set one after the other and then
saved by pressing the bottom program function button twice. Program blocks
defined as“FIX”blocks cannot be modified.
If a cleaning program has been completed successfully, i.e. all set desired
parameters have been achieved, then theFinishLED lights up and the program
sequence LEDs above it light up and flash in order, making a light chain. The
specific selector switch position of programs and the fascia design may be
changed or vary between different models. For this reason, programming
instructions for machines with a rotary selector switchalwaysgive the
corresponding clock position for the program selector switch setting.
x
Warning!
In Germany, for washer-disinfectors covered by Medical Product Legislation
(MPG guideline 93/42/EWG, class IIa), all program modifications in the various
programming levelsmustbe properly documented in the Medical Product Book.
2.5.2 General Information - Programming Mode
The programming mode can be quit without saving any parameter changes that
may have been made by interrupting the power supply in some way, e.g., by
opening the door. When stepping back and forth through the various
programming levels the active programming level is onlydisplayed, e.g.,E 03,
when the program selector switch is turned to the 12 o'clock setting. There are 33
or 34 programming levels, depending on model (E 01toE 33orE 34). Each
setting in the programming levelsE 05toE 32only applies to the cleaning
program that has been selected by the program selector switch in the
programming mode.
x
Level Function
E 01-E 04Global parameters, valid for all programs
E 05-E 32Program-dependent parameters
E 33RESET (resets all standard settings)
E 34Printer time/date setting
Table 4:Programming Levels
Descriptive Technical Documentation
DTD no. 62-7881 070-5
18.09.2013, US_am This information should not be duplicated or passed on without Miele approval. All rights reserved.