2-11
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10. Close red and blue service hose hand valves or
couplers.
11. Purge noncondensables.
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33
For additional information refer to Purging Non-
condensable gas in this chapter.
Compare the recovery tank pressure/temperature
relationship with the chart and bleed off any non-
condensables (air) by pressing the Purge valve button.
12. Hold graduated cup under the Oil Drain valve.
13. Slowly open oil drain valve. Any accumulated oil expels
into cup.
14. Close valve immediately when all oil is expelled.
Amount indicated on cup is amount to add back into
vehicle system when recharging.
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33
Discard refrigerant oil in accordance with laws in your
area.
Purging Non-condensable Gas
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33
Be sure to purge non-condensable gases immediately
after each recovery and before each charge.
1. Using the pressure/temperature chart located on the front
panel of the unit, find the temperature that is the same
as the reading on the temperature gauge. Next to the
temperature is a pressure reading. That pressure
reading should be what the pressure gauge indicates.
2. If the pressure is higher, press the purge button on the
front of the unit until the pressure on the gauge is the
same as what is on the chart.
3. Wait a minute and monitor temperature and pressure
again. If they do not correspond to the chart, purge
again until they do.
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