Evacuation - Data Aire gForce Ultra User Manual

In addition to the refrigeration system, check all condenser water lines, humidifier
water makeup lines, condensate lines, condensate pumps, chilled water lines,
centrifugal pumps and fluid cooler (where applicable).
When handling or recovering refrigerant it is not permissible to release refrigerant into
the atmosphere.
possible. Current standard practices must be used.
Pressurize the systems circuit(s) to 150 PSIG (1034 kPa) using dry nitrogen with a trace
of refrigerant. Check the entire system for leaks with a suitable leak finder (per local
code) including but not limited to all braze joints, caps, fittings, and flare nuts on both
field and factory furnished components. After completion of leak testing, release test
pressure and pull a vacuum on the system.
WARNING:
installing contractor.
WARNING:
leakage could result in property damage to mission critical equipment. A
water drain connection is required. Units with optional steam generator
humidifiers will require an external potable water supply. Water leakage
can result from improper installation and/or practices.

2.11 Evacuation

Moisture prevents the proper operation of both the compressor and the refrigeration
system. Air and moisture reduces service life and increases condensation pressure,
which causes abnormally high discharge temperatures that are capable of degrading
the lubricating properties of the oil. The risk of acid formation is also increased by air
and moisture, and it this condition can also lead to copper plating.
phenomena may cause both mechanical and electrical compressor failure. The typical
method for avoiding such problems is to evacuate the system.
It is of the utmost importance that proper system evacuation and leak detection
procedures be employed. Good evacuation processes include frequent vacuum pump
oil changes and large diameter, short hose connections to both high and low sides of
the system preferably using copper tubing or braided hose. If the compressor has
24 ● gForce Ultra User Manual
Many leak-test methods recommended in the past are no longer
Tightening of fittings and valves is the responsibility of the
With any fluid connection there is risk of leakage. Water
All of these
10-2014