16
2090-0217 Rev 6
Liquid Push-Pull Recovery Operations
ATTENTION:
Before attempting liquid push-pull recovery operations,
please review this page.
A scale or liquid-sight glass can be used to determine when all the liquid is
recovered. The STINGER will not pull a vacuum using the liquid push-pull
recovery operation. To finish the recovery operation, you must perform vapor
recovery operations as described on page 13.
GUIDELINES
If
any
of the following conditions are present in the system being evacuated, the
liquid push-pull operations may not be practical and vapor recovery operations
should be performed.
9
The equipment contains less than 20 lbs of refrigerant.
9
The equipment is a heat pump or other system with
refrigerant flow that would prevent you from isolating the
liquid.
9
Equipment has an accumulator between the service ports
used in the liquid recovery process.
9
Liquid refrigerant migration has occurred and the location of
the liquid is unknown.
9
The refrigerant tubing design on the equipment does not
allow for a solid column of liquid refrigerant to be formed.
Summary of Contents for Refrigerant Recovery Unit
Page 9: ...2090 0217 Rev 6 9 Descriptions of Features Figure 1 Stinger Front View...
Page 15: ...2090 0217 Rev 6 15 Figure 3 Standard Recovery Hose Connections...
Page 18: ...18 2090 0217 Rev 6 Figure 4 Liquid Push Pull Recovery Operation...
Page 21: ...2090 0217 Rev 6 21 Figure 6 Special Notes for R410 A Recovery...
Page 26: ...26 2090 0217 Rev 6 Figure 8 Recovery Tips...
Page 30: ...30 2090 0217 Rev 6 Schematic Diagram Figure 9 Schematic Diagram...
Page 32: ...32 2090 0217 Rev 6 Figure 10 Stinger Exploded View...
Page 34: ...34 2090 0217 Rev 6 Figure 11 Compressor Exploded View...
