Stadler Form Jack Operating Instructions Manual page 9

ance).
The length of time the cartridge is effective for depends on the hardness of the
water. This can be tested using the testing strips provided (strips are stuck to
the reverse side of these instructions for use)
1. Dip the testing strips into the water for a second
2. After around one minute, the results can be seen on the testing strips. Some
of the green boxes change colour into pink. The water hardness is shown by
how many boxes turn pink.
Example: If three boxes are pink, then the water hardness is at level 3
Number of
pink boxes
0/1
2
3
4
With a water hardness upwards of 21 °dH, we can no longer recommend the
Stadler Form).
The unit only works properly with untreated water. Do not use where there are
water softeners and water ionisers in operation. However, the Jack may be
taker or the provider of drinking water.
small mirror in the fog for a few seconds. If there are then white deposits
(calcium carbonate) on the mirror, then the cartridge needs changing.
not transport Jack while it is full of water. The water could spill over and run
into the electronic system of Jack.
Water hard- Degree
ness h a r d n e s s
(°dH)
Soft From 4°dH
M o d e r a t e l y From 7°dH
hard
Hard From 14°dH
Very hard From 21°dH
of Cartridge will last for:
(with 6 litres / day)
Days
60 days
30 days
20 days
10 days
Litres
around 360 l
around 180l
around 120l
around 60l
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