Fisher & Paykel DD24DTX6I1 User Manual page 23

WATER SOFTENER (SOME MODELS ONLY)
Water hardness recommendations
Use the table below to determine the optimal water hardness setting. Your local water
z
company will be able to help.
If you have a household water softener installed, use the setting recommended for water
z
with a hardness under 100 ppm/6 gpg, irrespective of the water hardness in your area.
If your water hardness is above 625 ppm/36 gpg, the wash performance of your
z
DishDrawer™ Dishwasher will decline over time. The rinse aid setting should be at 5.
SETTING
PPM*
0 0 – 100
1 100 – 250
2 250 – 350
3 350 – 450
4 450 – 550
5
550 – 625
WATER HARDNESS SCALES
GPG** °DH
0 – 6 0 – 5.6
6 – 14 5.6 – 14
14 – 20 14 – 19.6
20 – 26 19.6 – 25.2
26 – 32 25.2 – 30.8
32 – 36 30.8 – 35
°FH °E / °CLARK
0 – 10 0 – 7
10 – 25 7 – 17.5
25 – 35 17.5 – 24.5
35 – 45 24.5 – 31.5
45 – 55 31.5 – 38.5
55 – 62 38.5 – 43.8
*ppm = parts per million
MMOL/L
0 – 0.1
0.1 – 2.5
2.5 – 3.5
3.5 – 4.5
4.5 – 5.5
5.5 – 6.2
|
**gpg = grains per gallon.
23