Refrigerant Recovery Unit
16
2020-9000 Rev 0
2.6. Purge Mode
IMPORTANT:
The unit must be purged after each use. Liquid
refrigerant remaining in the unit may expand, damage the
components, and pollute the environment.
Step
Description (Purge Mode)
1
Note that the unit stops automatically after recovery is complete.
2
Turn the control knob to the PURGE position. The motor will
automatically restart. When purging is finished, the low pressure
switch will activate, the motor will shut off, and the green
“Complete” LED will come on.
3
Turn off the power switch.
4
Close the valves of the hoses, recovery tank, etc.
5
Disconnect all hoses.
6
Turn the control knob to the OFF position.
2.7. Liquid Push/Pull Recovery Mode
If
any
of the following conditions are true in the system being evacuated, the
liquid push-pull method may not be practical and a normal liquid/vapor
recovery should be performed.
•
The equipment contains less than 20 lbs (9.1 kg) of refrigerant.
•
The equipment is a heat pump or other system with refrigerant flow
that would prevent you from isolating the liquid.
•
Equipment has an accumulator between the service ports used in the
liquid recovery process.
•
Liquid refrigerant migration has occurred and the location of the liquid
is unknown.
•
The refrigerant tubing design on the equipment does not allow for a
solid column of liquid refrigerant to be formed.
IMPORTANT:
If the 80% shut-off cord is
not
used, then use a scale
(P/N 2010-0000) to monitor the refrigerant level in the recovery
cylinder in order to prevent overfilling.
IMPORTANT:
Ensure all valves are CLOSED.
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sales@calcert.com
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