Isotherm CLEAR - Initial Setup and Priming; Manual Priming Procedure; Water Type Requirement

It is important also to prime the ice-maker manually before first usage.
Lift up the ice-maker lid and lift up the flappers. Pour 3 liters of potable or mineral
water into the water bin. Indel Weabsto Marine ice-maker is especially built to work
with potable or mineral water only.