Fisher & Paykel DishDrawer DD603I Integrated, Руководство пользователя

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W W
H H A A T T C C O O N N S S T T I I T T U U T T E E S S H H A A R R D D A A N N D D S S O O F F T T W W A A T T E E R R
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Depending on who you talk to and what you read, there is no magical number that says this unit of
water hardness constitutes soft, medium or hard water. The table below illustrates what we believe
to be soft, medium and hard water. (see below for Europe’s classification for water hardness).
W
ATER
T
YPE
S
OFT
M
EDIUM
H
ARD
< 80ppm
< 80mg/l
< 4.7gpg (US)
< 8° f
< 5.6° e
< 4.5°dH
80 – 150ppm
80 - 150mg/l
4.7- 8.8gpg (US)
8 - 15° f
5.6 - 10.5°e
4.48 - 8.4° dH
150 - 200ppm
150 - 200mg/l
8.8 - 11.7gpg (US)
15 - 20° f
10.5 - 14°e
8.4 - 11.2°dH
P
P
R
R
O
O
B
B
L
L
E
E
M
M
S
S
W
W
I
I
T
T
H
H
S
S
O
O
F
F
T
T
E
E
N
N
E
E
D
D
W
W
A
A
T
T
E
E
R
R
It is very important that if you are in a soft water supply you do not use too much detergent in your
dishwasher, as it may cause irreversible etching.
Etching is a chemical deterioration that occurs on the surface of glassware when it is subjected to
high temperatures, too much detergent and/or soft water situations. Etching is caused by a
combination of very hot water, which causes the detergent to become very aggressive but because
the water is soft, there are no water hardness mineral ions for the detergent to bind to so it
extracts mineral ions directly from the glass.
Etching initially looks like rainbow coloured film, as the glass is subjected to further washing the
surface will eventually appear opaque. This type of etching is irreversible.
To prevent etching from occurring on glassware use less detergent (follow the recommended
detergent quantities in the user guide for soft water situations), use the normal wash programme
and ensure the dishwasher is not overloaded, so rinse water can reach all the dishes during the wash.
P
P
R
R
O
O
B
B
L
L
E
E
M
M
S
S
W
W
I
I
T
T
H
H
H
H
A
A
R
R
D
D
W
W
A
A
T
T
E
E
R
R
It is very important to know the water hardness of your water supply. In hard water areas a higher
dosage of detergent is required. Hard water causes problems with the cleaning process. The mineral
salts in the hard water will bind with the detergent and makes the detergent less effective. If you
live in a hard water situation you may have noticed the following.
•
Dishes and glassware washed in the dishwasher becomes spotted or has a white film on it when
dry.
• Gradual decline in wash performance in your dishwasher or clothes washing machine.
•
Build up of scale/calcium/white film around heating elements on appliances like the kettle, which
reduces the efficiency of the appliance.
• White clothes after numerous washing gradually turns gray.
•
After washing your hair, it may feel sticky or look dull.
• Unsightly marks stains and scale on sinks, baths, toilet bowls and around the base of taps.
• Difficult to get a good lather, so extra soap is required.