Table 12-1. Compressed Air System Major Components
Location and Function
ROWPU space port bulkhead near compressor. Starts, stops,
and provides automatic compressor operation.
Compressor w/l Receiver
ROWPU space portside aft. Compresses air to 155 psi and stores it
in an 80-gallon receiver.
Automatic Air Pressure
On top of receiver. When compressor controller is in AUTO, this
Regulator (Pressure Switch)
mechanism turns compressor on and off to maintain pressure in
receiver within factory set limits.
Receiver Pressure Gauge
Mounted on side of receiver. Indicates air pressure in receiver.
Receiver Safety Valve
Mounted on top of receiver. Factory set to relieve air pressure
in receiver if it exceeds 175 psi.
Receiver Drain Cock
On bottom of receiver. Provides opening for relieving air
pressure in receiver. Drains moisture from receiver.
Main Supply Valve
Forward end of receiver. Controls flow of compressed air to air
supply lines. Isolates receiver from lines.
Air Filter 1
In air supply pipe near compressor. Removes particles and
moisture from air passing from receiver to air supply lines.
Air Filter 2
In air supply line immediately in front of air station 6. Removes
oil and particles from line to air station 6 to preclude
contamination of drinking water shore discharge hose.
Air Pressure Regulator 1
Workshop port bulkhead. Reduces air pressure to 40 psi for
with Air Pressure Gauge
blowdown of seachest in void port 2. Indicates air pressure in
line beyond regulator.
Air Pressure Regulator 2
ROWPU space aft bulkhead behind void 4 air ducts. Reduces air
with Air Pressure Gauge
pressure to 40 psi for blowdown of seachest in void 4 port.
Indicates air pressure in line beyond regulator.
Air Station 1
ROWPU space port bulkhead near air compressor. Provides air
to quick disconnect coupling for pneumatic equipment.
Air Station 2
ROWPU space port bulkhead amidships. Same function as Air
Air Station 3
Workshop port bulkhead. Same function as Air Station 1.
Air Station 4
ROWPU space starboard bulkhead forward. Same function as
Air Station 1.
Air Station 5
ROWPU space starboard bulkhead aft of sliding door. Same
function as Air Station 1.
Air Station 6
Weatherdeck stern portside. Provides 155 psi to quick disconnect
exclusively for powering PIG through shore discharge hose.
Air Station 7
ROWPU space port bulkhead aft of switchboard. Same function
as Air Station 1.