Installation & Commissioning Manual:
Neos 100S, 20X, 30S, 35X, 40X, 50X
62-11165 Rev D
®
23
Evacuation, Leak Checking, and Refrigerant Charging
Check the evacuation system for leaks: Without being connected to the inline service ports,
open the vacuum pump and manifold gauge valves and start the pump and draw a deep
vacuum. Shut off the pump and check to see that the vacuum holds. Repair if necessary.
Connect the manifold gauge set hoses to the service ports. Open the
vacuum pump and manifold gauge valves (if they are not already open)
and start the vacuum pump. Evacuate unit until the vacuum gauge
indicates 2,000 microns. Close the vacuum gauge and vacuum pump
valves. Wait a few minutes to be sure the vacuum holds.
Break the vacuum with clean, dry nitrogen. Raise system
pressure to approximately 2 psig
Repeat the steps outlined above one more time.
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