Purge air from the cylinder – MAHLE RTI TX200 User Manual
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PURGE AIR FROM THE CYLINDER
Refrigerant recovered into the cylinder may also contain Air. This Air will increase the pressure in the
cylinder and slow recovery. Large quantities of Air may even cause the TX200 to stop recovering due
to a high-pressure shutdown.
Check the pressure in the cylinder to determine the need to purge Air as follows:
Connect the High Side Gauge (on Gauge Manifold) to the Vapor Valve of the cylinder. Determine the
ambient temperature and compare the gauge pressure to the pressure shown in the Air Purge
Charts on the next page.
Charts for Bars with Centigrade Degrees and PSIG with Fahrenheit Degrees are provided.
If the cylinder pressure is greater, slowly open the Gauge Manifold Valve and allow Air to slowly
escape until the pressure equals that shown in the chart.
This purge process can be performed anytime during a recovery and while the cylinder is still above
ambient temperature after a recovery procedure.
After the cylinder has cooled to ambient temperature, the Air can be purged to the pressure in a
Standard Refrigerant Pressure/Temperature Chart.
NOTE:
A High-Pressure-Shutdown can be detected by noting that the Compressor-On Light goes OFF and
there is still positive pressure at the Inlet of the TX200.
The Condenser Fan will continue to run and the TX200 Compressor may cycle Off and On as the
outlet pressure rises and falls.