Miele PG 8164 AE RO Betriebsanleitung Seite 10

4. Setting of the reverse osmosis module by the service technician
4.1 PerfectWater
The PerfectWater function ensures that RO water with a consistent quality is always available for rinsing. RO
water that does not have this quality is returned to the reverse osmosis module. The service technician can
set the quality of the RO water to three levels (good, better, best). The factory setting is "better".
4.2 WaterEco
Upon delivery, rinsing with RO water is activated for all washing programmes. If required, the service techni-
cian can activate the WaterEco function and assign the individual washing programmes different qualities of
water for the rinse cycle:
Water quality
Quality 1 RO water
Quality 2 Quality of the inlet water
INFO To ensure that RO water is available immediately after changing from a washing programme using
quality-2 rinsing water to a washing programme using RO water, the machine boiler is rinsed.
TIP All washing cycles using quality-2 rinsing water should be run together, as rinsing the boiler con-
sumes additional water and increases the time of the programme.
If the water hardness level exceeds 3 °dH (0.5 mmol/l) we recommend the use of a water softening unit to
improve the performance of the reversis osmosis module. Moreover, the machine may develop limescale
deposits if the WaterEco function is used frequently.
5. Info field displays
(1)
(1): Info field
Pictogram Meaning
Display during washing:
 PerfectWater: RO water is optimised before it is used for rinsing.
 WaterEco: The water quality for rinsing is set to quality 1 ( 4.2). The time of the pro-
gramme is increased and additional water is consumed.
Display in wash breaks:
The membranes of the reverse osmosis module are automatically rinsed after a wash break
of approximately four hours (also when the machine is switched off).
The washing programme with RO water is selected.
6. Service
We recommend that you have an authorised service technician carry out the maintenance of the machine at
least once a year so that vulnerable parts subject to ageing and wear can be checked and replaced if neces-
sary. Original replacement parts must be used.
Such components include:
 Water supply hose
 Dosing tubes
 Door seal
 The reverse osmosis module membranes
 Active charcoal filter
8
Wash item
Glasses, cutlery, ...
Chinaware, trays, cooking utensils, ...