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8. In the Event of Failure…
Trouble Shooting
※
When the value of oxygen concentration monitor cannot recover beyond 18% after operation, it’s
suspected that it may be influenced by active carbon filter absorption, operate as per the following
pictures. Adjust the gas pipe switching valve to connect to atmosphere (External gas), wait for
several minutes, and check if the oxygen concentration display recovers beyond 18%. After
confirmation, make reverse operation to recover the working state (Internal gas).
Open the access door at left side
Turn the gas pipe switching valve from to
