Pressure Test & Evacuate
Leave the line set shut off valves closed (front seated).
Pressure test the line sets and CVD condensing unit with
150 psig of dry nitrogen. Add nitrogen at the line set shut off
valves located at the back of the ice machine. Complete the
pressure test, verify no leaks are present and remove the
nitrogen from the system before connecting the vacuum
pump. Connect a vacuum pump to both of the line set shut
off valves located at the back of the ice machine head
section. Evacuate to 500 microns (or less). To completely
evacuate the CVD condensing unit, continue the
evacuation for 30 minutes after reaching the 500 micron
point.
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