The settings are factory reset and the valve recalibrates. Historically I have always assumed that when you interrupt the power supply. As I had to attend site earlier and used i26 setting to recalibrate the ICAD. I will let you know regarding the recalibration. So no power cuts, ICAD shows 100% but is actually closed? Well at least until the standing pressures have equalised then you have to create a HP /LP differential to further fill the drum. Once onsite the valve opening is shown as 100% open but is actually closed.Д«ecause the refrigerant level in the receiver is high and opening the Liquid Line bypass.ДЄllows the refrigerant to flood into the surge drum. 'Is a right Pain in the butt, Particularly if the plant room is on the ground floor and the control room is 1st floor! Resulting in long shutdowns before anyone on-site notices the chill room temps rising.ДЄs anyone will appreciate once emptied getting a large Ammonia plant away again is, Shall we say

Said valve has started to randomly shut closed and the surge drum gradually empties.Д¬ausing the plant to cycle off on it's suction Pressure control. With it's liquid level being metered by a ICAD /ICM Valve. A site (Un manned by Engineers) has a large surge drum on Ammonia.

Danfoss icad 1200 manual