October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Vacuum Switch

Remove the vacuum switch. Connect a vacuum pump to the vacuum switch. Connect an ohmmeter to the vacuum switch, and check continuity between terminals. With 0-4.7 in. Hg vacuum applied, switch should be open. With more than 4.7 in. Hg vacuum applied, switch should be closed.