Question

what must be installed in any equipment that has a direct connection with potable water supply (ice machine, coffee machine, dish washer)

Answer 1

Equipment connected to potable water supply must have a protective outer shell to resist chlorinated disinfectants.

Step-by-step explanation:

Any equipment that has a direct connection with potable water supply should have a protective outer shell, which makes it resistant to chlorinated disinfectants. This is important to ensure that the equipment remains safe to use and doesn't contaminate the water supply.