TM 5-4220-227-14
Key
Designator
Control or Indicator
Function or Use
1
NA
Power Supply (Lights, I/L)
Controls I/L lights.
2
SWT-001
Toggle Switch
ON/OFF - controls power supply circuit.
3
SWT-002
Toggle Switch
ON/OFF - controls I/L light circuit.
4
SWT-003
Variable Rheostat
Controls voltage to I/L lights.
5
NA
Indicator Lights (3 ea)
Light glows to indicate energized I/L light circuits.
6
NA
Fuseholders (3 ea)
Contains fuse for I/L lights.
7
NA
Power Supply
Controls O/L lights.
8
NA
Fuseholder
Contains fuse for O/L lights.
9
SWT-005
Variable Rheostat
Controls voltage to O/L lights.
10
SWT-004
Toggle Switch
ON/OFF - controls O/L light circuit.
11
NA
Indicator Light
Light glows to indicate energized O/L light circuit.
12
NA
Fuseholder
Contains fuse for chiller and scrubber fan circuits.
13
NA
Oxygen Analyzer
Analyzes % of oxygen in chamber air.
14
NA
Oxygen Meter
Indicates % of oxygen in chamber air.
15
SWT-006
Range Switch
Selects range of oxygen in air being tested or
condition of battery.
16
SWT-007
Span Adjustment
Controls meter's indicating pointer.
17
NA
Digital Thermometer
Monitors temperature of chamber air.
18
NA
Sound Powered Phones
Secondary communications system.
19
NA
Communications Box
Primary communications system
20
SWT-008
Power Switch
ON/OFF - energizes communication set.
21
SWT-009
Speaker Switch
ON/OFF - energizes comm box speaker.
22
SWT-010
Volume Control
Controls volume of operator's speaker.
23
SWT-013
Volume Control
Controls volume of I/L speaker.
2-4