ACIS Vacuum Tank

Disconnect vacuum hoses from vacuum tank. See Fig 1 or Fig 2. Replace vacuum tank if it does not operate as follows.

• Blow through port "B". See Fig 2. Air comes out of port "A".
• Blow through port "A". Air does NOT come out of port "B".
• Plug port "B". At port "A", apply 16 in. Hg. Vacuum holds for at least one minute.

Fig 1: Identifying Ports On ACIS Vacuum Switching Valve (VSV)

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Fig 2: Identifying Ports On ACIS Vacuum Tank

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