Plasma equipment cannot use tap water. The main reason is that the conductivity does not meet the requirements. If the equipment has a detection device, it will alarm and not arc.
Tap water contains Ca and Mg ions, which will form scale in the spray gun after long-term work.
Taking Meike's F4 spray gun as an example, the cooling water mainly specifies the conductivity and hardness. pH, see graph below.
Of course, there is no need to detect these indicators in actual use, just buy some distilled water and add it.
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