TM 5-4220-227-14
f. The chamber is equipped with oxygen breathing system consisting of a high pressure oxygen pressure
regulator, pressure gages for high and low pressure indication, isolation valves for inner and outer lock, oxygen manifold
bibs in inner and outer locks. Each manifold bib is supplied with three (3) oxygen masks (overboard dump type). The
dump gas is controlled by differential back pressure regulator located on the exterior control panel.
g. The chamber is equipped with manway doors on the inner and outer locks. These doors are self sealing (O-
ring seals) and require only hand held force to obtain a seal at .5 FSW pressure.
h. The chamber is equipped with aluminum diamond tread floor plates. Each lock is provided with a drain port.
These ports are supplied with an internal threaded plug, access is gained t by removing floor plates.
1-8. Location and Description of Major Components. (figure 1-2)
GROUND FAULT INTERRUPTER (1). Prevents electrical arcing by interrupting the circuit should a ground occur.
ELECTRICAL CONTROL PANEL (2). Controls the lighting, communications and oxygen system of the chamber.
CHAMBER CONTROL CONSOLE (3). Controls the oxygen flow to the chambers.
LIGHTING SYSTEM, HYPERBARIC (4). Supplies light to the inner lock (I/L) and outer lock (O/L) of chamber.
HEATER/CHILLER PENETRATOR (5). Allow access for service lines through chamber portal to heater/chiller and C02
scrubber.
SKIDS (6). Mounts chamber and provides for forklift access.
HEATER/CHILLER MODULE (7). Provides heating/cooling fluids to heater/chiller unit inside inner chamber.
02 OXYGEN SUPPLY (8). Supplies oxygen to chamber.
HEATER/CHILLER UNIT (9). Controls chamber air temperature.
CARBON DIOXIDE (CO2) SCRUBBER (10). Controls the C02 content of pressurized chamber air.
COMMUNICATIONS SYSTEM (11). Inner lock two-way communication.
BUILT-IN-BREATHING SYSTEM (BIBS) (12). Provides O2 through a three-way outlet I/L and overboard dump manifold.
COMMUNICATIONS SYSTEM (13). Outer lock two-way communication,
BUILT-IN-BREATHING SYSTEM (BIBS) (14). Provides oxygen through a three-way outlet O/L and overboard dump
manifold.
1-4
