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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Vacuum Switch B

1. Disconnect hose No. 7 to control box at vacuum hose manifold and connect vacuum pump to hose.
2. Check for continuity between black/yellow and gray wire terminals of control box connector.
3. There should be continuity when vacuum above 1.2 inches Hg is applied and there should be no continuity when vacuum is released.