Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Refrigerant Identification Testing

REFRIGERANT IDENTIFICATION TESTING

A/C Refrigerant Analyzer:






Special Tool(s)

1. Follow the instructions included with the refrigerant analyzer to obtain the sample for testing.

NOTE: Prior to recovering or charging the refrigerant system, you must use an A/C refrigerant analyzer to identify gas samples taken directly from the refrigeration system or storage containers.

2. The analyzer will display one of the following:
- A green "PASS" light emitting diode (LED) will light if the purity of the R-134, R-12 or the R-22 is better than 98% by weight.
- A red "FAIL" LED will light if the purity of the gases does not meet the 98% purity standard.
- A red "FAIL" LED and "HYDROCARBON" light will illuminate and a horn will sound if a hydrocarbon is detected above 5%. This will alert the user of potential hazards.
3. If contaminated refrigerant is detected, DO NOT recover the refrigerant into your recovery/recycling equipment.