Data Aire gForce DX - Tools Needed; First Stage Evacuation

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core removal tool) between the system and vacuum pump should be provided to allow the
system pressure to be checked after evacuation.
NOTICE: Do not turn OFF vacuum pump when connected to an
evacuated system before closing shut-off valve.
WARNING: Do not apply power to the compressor when in a vacuum
Tools Needed
• Refrigerant manifold gauge set
NOTICE: This manifold gauge set should not be used for the vacuum
procedure.
• Vacuum rated hoses
• Nitrogen bottle
• Micron gauge
• Schrader valve core removal tool
• Two-Stage Vacuum Pump(s)
NOTICE: Two pumps will speed up the procedure. One (1) vacuum pump
located normally outside at the condenser and one (1) vacuum pump is
located indoors at the evaporator unit.
The vacuum pump should be connected to the discharge line after the check valve and the
liquid line before the metering device via vacuum rated hoses and Schrader valve core
removal tools. On the high side of the system there is a Schrader port located on the leaving
side of the check valve and on the liquid line before the expansion valve, attach your Schrader
valve core removal tools and hoses here. A micron gauge should be fitted to the system at the
furthest point from the vacuum pump. Install a Schrader valve core removal tool with shutoff
valve before the micron gauge to prevent damage to the micron gauge during charging.
First Stage Evacuation
1. With the refrigerant valves fully open, open the Schrader core shutoff valve and evacuate
the refrigerant lines, condenser coil and evaporator coil (the complete refrigerant system)
from both, low and high sides of the system to 2000 microns or less.
2. Close the Schrader core shutoff valve and turn OFF the vacuum pump.
3. Disconnect the vacuum pump hoses from the vacuum and attached them to your
manifold gauges.