TM 55-1925-285-13&P
0009 00
Vacuum Unusually Low
During Normal Processing
Is
Yes
OWT
empty?
No
Are valves
OWS-1, OB-8,
Yes
No
Is the vacuum
CLOSE
OB-9, OB-13 and
in the normal
the valves.
OB-14
range?
CLOSED?
No
Yes
No
Is the vacuum
CLOSE
in the normal
valve OWS-2.
range?
Defective check valve between
Yes
OWS2 and OB-17. Notify
the maintenance supervisor.
Is the
Yes
CLOSE
OWS Relief
the valve.
valve OPEN?
No
Yes
No
Is the vacuum
in the normal
range?
Is the
No
tank cover
gasket tight?
Yes
Is the vacuum
Replace the tank
in the normal
cover gasket
range?
Yes
(WP 0014 00).
No
Leakage in the inlet piping.
Notify the maintenance
supervisor.
Exit
Procedure 2. Vacuum Unusually Low During Normal Processing
0009 00-3