TM 55-1930-209-14&P-1
Figure 12-6. Exterior View of Air Pressure Regulator with Gauge
h.
Air station 8 seachest blowdown valve (Figure 12-1 and 12-2), on workshop port bulkhead, controls compressed
air for blowdown of forward seachest. Valve is used with SW30.
i.
Seawater system valve SW30, on workshop port bulkhead, controls air vent for forward seawater seachest. Its
normal position is open to vent air from seachest to atmosphere through venting pipe to deckhouse top.
When closed, and air station 8 seawater seachest blowdown valve is open, air pressure is forced into seachest to
blow out debris.
j.
Air pressure regulator 2 (Figure 12-6), on ROWPU space aft bulkhead near port bulkhead, controls air pressure
used in blowdown of generator cooling water seachest. Regulator is normally set to 40 psi and works the same
as air pressure regulator 1.
k.
Air station 9 generator cooling seachest blowdown valve, on ROWPU space aft bulkhead, controls compressed
air for blowdown of generator cooling seachest in void 4 port. Valve is used with SW44.
l.
Seawater valve SW44, on ROWPU space aft bulkhead, controls air vent for generator cooling water seachest. It
works with generator cooling water seachest blowdown valve in similar manner as forward seachest blowdown
valve and SW30.
12-7.2 Indicators.
a.
Air compressor electric controller, on ROWPU space port bulkhead near compressor, indicates status of
compressor as either START, STOP, AUTOMATIC, or MANUAL (Figure 12-3).
b.
Receiver pressure gauge, located on top side forward of air receiver, indicates amount of pressure in air receiver.
c.
Oil sight glass on compressor indicates oil level in compressor.
d.
Air regulator pressure gauge 1, on workshop port bulkhead, indicates air pressure as regulated by pressure
regulator 1. Normal reading should be 40 psi for air station 8 forward seachest blowdown.
e.
Air regulator pressure gauge 2, on ROWPU space aft bulkhead near port bulkhead, indicates air pressure as
regulated by pressure regulator 2. Normal reading should be 40 psi for air station 9 generator cooling water
seachest blowdown.
12-9
