Miele G 7881 Service Manual

B Modification History
When? Who? What?
06.03.2009 Reinhard BremehrVersion 9
03.12.2008 Reinhard BremehrVersion 8
06.03.2008 Reinhard BremehrVersion 7
28.08.2007 Reinhard BremehrVersion 6
21.05.2007 Reinhard BremehrVersion 5
17.04.2007 Reinhard BremehrVersion 4
30.11.2005 Reinhard BremehrVersion 3
11.06.2002 Reinhard Bremehr Entire BTD completely revised.
10.12.2001 Reinhard Bremehr
05.11.2001 Reinhard Bremehr
15.10.2001 Reinhard Bremehr
12.10.2001 Reinhard Bremehr
04.06.2001 Reinhard Bremehr Initial...

C Technical Data
These washer-disinfectors are supplied as free-standing models with lids. The
standard built-in depth is 23.6 inches (600 millimeters). The machine connections
are in the back, but utility connections should be made from the side. Connections
for the connection of a Miele DOS module (two DOS modules for the G 7882) are
provided at the back of the appliance. The DOS 10/30 dispenser is installed as
standard. If the machine is to be installed under a countertop, an additional cover
plate is...

After the connection has been made and the water supply checked, the on-site
shutoff valves should be closed again so that the valves and connection hoses
are not under pressure.
For technical application reasons, the appliance is supplied as standard for
connection to cold water only. The inlet hoses (water inlet and steam condenser)
must only be connected to the cold-water inlets. See the installation manual for
more information.
Large surface area filters are included with the machine for installing...

x
Drain Connection - G 7883 CD
On-site drain connection dia. (mm) DN 50 (2.0”)
Max. drain pump head height above base of machine 3.3' (1m)
Max. brief drain flow rate 13.1 gal/min (50 L/min)
Drain hose inner dia.
1)7/8”
Drain hose length (supplied) 59”(1500 mm)
Steam condenser Separate drain hose and pump
Table 5:Drain Connection, G 7883 CD
1)The Poly-Rex drain hose and associated clips are provided as standard. The drain hose must
not be shortened. Floor drains are permissible. An extension of up to...

D Layout of Electrical Components
G 7881, G 7882, G 7883
Rear view. Some connections are optional.
x
Layout 1
1 Ground screw
2 Overflow, water intake vent
3 Condensate overflow
4 Condensate drain
5a Connection X1/2 for external DOS module (detergent)
5b Connection 2X1/2 for external DOS module (chemical disinfection)
(depending on model)
6 Steam condenser
7 Steam condenser drain
8 Steam condenser intake
9 Connection for neutralization, detergent or chemical disinfection
10 Connection for neutralization,...

G 7881
Components in base and door:
x
Layout 2
B1/1 Water intake level switch
B1/7 Detergent level level switch (not shown)
B1/10 Heating level switch
1B3/4 Flow meter
2B3/4 Flow meter
B3/9 Speed sensor
B8 Float switch
B8/1 Rinse aid float switch
B8/2 Reactivation salt float switch
B8/3 Overflow float switch
B8/6 Acidic agent float switch
C6 Circulation pump capacitor
F2 Temperature limiter
1F3 Winding protection (not shown)
2F3 Winding protection (not shown)
1K1/1 Heater relay (water + pulsed drying)...

S2 Main switch
1S4 Door switch (door state)
2S4 Door switch (open door)
T1 Transformer
X1/2 Dispenser system socket
X3/1 Terminal block
X3/2 Connector for heater elements
X5 Connector
X5/2 Drying unit connector (not shown)
Y1 Double solenoid (WaterProof system) - Cold water
Y12 Double solenoid (WaterProof system) - Hot water
Y20 Double solenoid (WaterProof system) - Demineralized water
1Y22 Steam condenser solenoid (not shown)
2Y22 Steam condenser solenoid (not shown)
Y38 Reactivation solenoid valve
Y50...

G 7882
Components in base and door:
x
Layout 3
B1/1 Water intake level switch
B1/7 Detergent level level switch
B1/10 Heating level switch
1B3/4 Flow meter
2B3/4 Flow meter
B3/9 Speed sensor
B8 Float switch
B8/1 Rinse aid float switch
B8/2 Reactivation salt float switch
B8/3 Overflow float switch
B8/6 Acidic agent float switch
C6 Circulation pump capacitor
F2 Temperature limiter
1F3 Winding protection
2F3 Winding protection
1K1/1 Heater relay (water + pulsed drying)
2K1/1 Heater relay (water only)
M6...

S2 Main switch
1S4 Door switch (door state)
2S4 Door switch (open door)
T1 Transformer
1X1/2 Dispenser system socket
2X1/2 Dispenser system socket
X3/1 Terminal block
X5 Connector
X5/2 Drying unit connector
Y1 Double solenoid (WaterProof system) - Cold water
Y12 Double solenoid (WaterProof system) - Hot water
Y20 Double solenoid (WaterProof system) - Demineralized water
1Y22 Steam condenser solenoid
2Y22 Steam condenser solenoid
Y38 Reactivation solenoid
1Y50 Liquid dispenser
2Y50 Liquid dispenser
Y51...

G 7882 CD
Components in base and door:
x
Layout 4
1B1/2 Level switch, pressure monitor
2B1/2 Level switch, pressure monitor
B1/1 Water intake level switch
B1/7 Detergent level level switch
B1/10 Heating level switch
1B3/4 Flow meter
2B3/4 Flow meter
B3/9 Speed sensor
B8 Float switch
1B8 Float switch, liquid monitor
2B8 Float switch, liquid monitor
B8/1 Rinse aid float switch
B8/2 Reactivation salt float switch
B8/3 Overflow float switch
B8/6 Acidic agent float switch
C6 Circulation pump capacitor
F2...