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The labels containing information on the hatch's usage.

The cabin repress label, on the right, reads

CABIN REPRESS
1. REPRESS O2 vlv - OPEN (10 sec) Then CLOSE
2. CABIN PRESS Approx. 1.0 psia
3. CABIN PRESS ind - Monitor for GROSS LEAKAGE (30 sec)
4. REPRESS O2 vlv OPEN
5. CONTROL SURGE TANK PRESS > 150 psia
6. REPRESS O2 - CLOSE
7. CABIN PRESS ind - 3.0 psia
8. DUMP OPS Into CABIN (If Avail)