Patent ID: 9074805
Filing Date: 2015-07-07
Classification: B60H,F25B,F25D

Abstract:
1. An apparatus for performing a diagnostic test on a refrigerant system, comprising: a first service hose configured to connect to a first port of the refrigerant system, the first service hose being pre-charged with a first amount of refrigerant from a storage tank before performing the diagnostic test, wherein the first amount of refrigerant is based on an ambient temperature; a second service hose configured to connect to a second port of the refrigerant system, the second service hose being pre-charged with a second amount of refrigerant from the storage tank before performing the diagnostic test, wherein the second amount of refrigerant is based on the ambient temperature; a compressor configured to recover refrigerant from the refrigerant system to the storage tank using the first service hose and the second service hose; a scale configured to measure a pre-recovery amount of refrigerant in the storage tank before recovering the refrigerant, measure a post-recovery amount of refrigerant in the storage tank after recovering the refrigerant, and measure a third amount of refrigerant in the storage tank after pre-charging the first service hose and the second service hose; and a controller configured to determine a recovered amount of refrigerant, wherein the recovered amount of refrigerant is a difference determined by subtracting the pre-recovery amount of refrigerant stored in the storage tank plus the amount of refrigerant pre-charged into the first service hose and the second service hose from the post-recovery amount of refrigerant stored in the storage tank.