CDA wc140in Installation & Use Manual page 11

CDA recommends the use of separate detergent, rinse aid and
dishwasher salt rather than combination tablets as separates achieve
better wash performance.
If you do use combination detergents, add salt and rinse aid to the
dishwasher and then adjust the water hardness setting and rinse aid
setting to the minimum. When you then use separate detergents
again, you should fill the salt and rinse aid compartments, adjust the
water hardness setting to the maximum and run an empty wash, then
adjust the water hardness setting and the rinse aid setting to the
appropriate level.
Salt
To ensure the best efficiency, the dishwasher needs soft water. Hard
water means that lime residues remain on the dishes and the interior
of the dishwasher, affecting performance. The softener system is
designed to remove the ions that make the water hard to provide the
best quality wash performance. This is achieved by using dishwasher
salt.
To add dishwasher salt
1. Remove the lower dishwasher basket and then unscrew the salt
compartment cap, as shown in Fig. 2.
2. Fill the compartment with dishwasher salt (do not use table salt),
carefully to prevent unnecessary spillage. Before first use, you should
fill the compartment with 2kg of dishwasher salt and then fill up the salt
compartment with water (up to the brim of the compartment) as shown
in Fig. 3.
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