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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Compressor HVAC: Testing and Inspection

TESTING COMPRESSOR

1. INSTALL MANIFOLD GAUGE SET.

2. RUN ENGINE AT APPROX. 2,000 RPM.

3. INSPECT COMPRESSOR FOR FOLLOWING
(a) High pressure gauge reading is not lower and low pressure gauge reading is not higher than normal.
(b) Check for the metallic sound.
(c) With engine off check for the leakage from shaft seal.