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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Refrigerant Identification / Testing

Deluxe Refrigerant Diagnostic Tool:






SPECIAL TOOL(S)

1. Follow the instructions included with the Deluxe Refrigerant Diagnostic Tool to obtain the sample for testing.

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

2. The refrigerant diagnostic tool will display one of the following
^ A green "PASS" LED (light emitting diode) will light if the purity of R-12 or 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 standards
^ A red"FAIL" and a"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.