Hard water

[bionic_hip]

This might be a silly question but here goes..........in terms of water hardness, is there a limit to stay under, prior to it entering the machine?

[chas]

From Chris Coffee:

Note: Should your water's hardness exceed 3 grains, then it is strongly recommended that a water softener be installed to prolong the life of the machine.
Failure to do so may cause damage to the machine which is not covered under warranty.

[bionic_hip]

Excellent! Thank you!