2090-0217 Rev 6
13
Vapor/Liquid Recovery Operations
Perform the following steps when recovering refrigerant that is either in vapor or
liquid form.
NOTE
: Refer to “R-410A Recovery – Special Notes” on page 20 when
recovering R-410A.
1.
Turn off all electrical or mechanical power to the refrigerant device to be
evacuated.
2. Make proper hose connections. Connect refrigerant hoses to recovery
cylinder, STINGER, and A/C system as shown on page 15. When possible,
use a manifold-gauge set to recover refrigerant from both the high- and low-
side service ports. This will speed up the recovery rates.
CAUTION:
If the 80% tank full shutoff 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.
CAUTION:
When recovering R-410A, you must use a recovery
cylinder approved for use with R-410A.
Standard recovery
cylinders with 350 psi working pressures are not approved for
use with R-410A.
3. Turn the inlet valve to the “CLOSED” position, the outlet valve to the
“OPEN” position, and the PURGE valve to the “RECOVER” position. Open
the vapor valve on the DOT recovery tank.
4.
Use the rear mounted power switch to turn ON the STINGER.
NOTE
: When recovering liquid, in rare instances a “knocking” sound may
come from the compressor. This indicates that too much liquid is
entering the compressor. The inlet valve must be regulated
(closed) until this knocking sound stops, otherwise compressor
damage could occur. Pumping liquid when the compressor is
knocking will damage the compressor, reduce the compressor life,
and void the compressor’s warranty
. This condition is rare and
should not occur under normal recovery operations.
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...
