User Manual

RTI Technologies, Inc.
October 6, 1999
Page 9
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Purge Chart
OIL DRAIN & AIR PURGE
Oi l and Non-condensable Gas (Air) are separated fro m
the recovered refrigerant and MUST be removed
following EACH recycling procedure as follows:
Note: AC800 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 Valv e (behind push
up door in front of AC800) to drain any oi l 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 AC800 will typically not remove
more than a tablespoon of oil, making replenishment
unnecessary.
LEAVE THE OIL DRAIN VALVE OPEN...
3. Read temperature on Thermometer in center of
AC800 control panel.
4. Locate the pressure (PSIG) corresponding to this
room temperature (
0
F) in the chart on the top of the
AC800. 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 t he 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.