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: Description and Operation

Air conditioning refrigerant

The R-134a air conditioning system uses a hydrofluorocarbon (HFC) non-CFC based refrigerant. R-134a requires the use of Jaguar compressor oil or equivalent meeting Jaguar specification. Do not use R-12 tools and equipment when repairing and R-134a system unless specified in the workshop manual. Never mix R-12 R-134a refrigerants and oils. They are not compatible.