Oil drain & air purge – MAHLE RTI TC2670 User Manual
Page 10
RTI Technologies, Inc.
September 30, 1999
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Purge Chart
OIL DRAIN & AIR PURGE
Oil and Non-condensable Gas (Air) are separated from the
recovered refrigerant and MUST be removed following
EACH recycling procedure as follows:
Note: TC2670 must be connected to power source.
1.
Press and hold the Purge Button (below the Purge
Gauge) for 5 seconds, and then release it.
2.
SLOWLY open the Oil Drain Valve (located on rear of
TC2670 towards outside) to drain any oil which may
have been removed from the A/C System. A cup is
provided to collect the oil.
Unless the A/C System had previously been overfilled,
the TC2670 will typically not remove more than a
tablespoon of oil, making replenishment unnecessary.
LEAVE THE OIL DRAIN VALVE OPEN...
3.
Determine the room temperature.
4.
Locate the pressure (PSIG) corresponding to this room
temperature (
0
F) in the chart on the top of the
TC2670. This chart is reproduced at the right.
If the pressure indicated on the Purge Gauge is greater
than that determined from the chart:
Press and hold the Purge Button until the Purge Gauge
pressure goes down to the pressure determined from
the chart. Any Non-condensable Gas will be vented
through the Oil Drain Valve at this time.
5.
Close the Oil Drain Valve.
6.
Press and hold the Purge Button for 5 seconds. This
permits any residual Non-condensable Gas to be
recirculated for reprocessing during the next recycle
procedure.