Humboldt HM-4187A De-Airing Tank - Manual (Page 5)

3
FIGURE 2
DE-AIRING TANK CONTROL VALVES
DE-AIRED WATER
FILL DRAIN
OFF
VACUUM PRESSURE
TURN KNOB LEFT TO
APPLY VACUUM TO
DE-AIRING TANK
OR
TURN KNOB RIGHT TO
APPLY PRESSURE TO
ASSIST DRAINING
OF DE-AIRING TANK
TURN KNOB LEFT
TO FILL DE-AIRING
TANK WITH TAP WATER
OR
TURN KNOB RIGHT TO
DRAIN DE-AIRING TANK