TM 10-6640-233-10
b. Front and Roadside Exterior (Figure 1-3).
ELECTRICAUTELEPHONE BOX DOOR: Hinged, double-latched access door to electrical and telephone
connection points.
ROADSIDE STORAGE BOXES: Provides storage area for main power input cable, ground rod, ground rod
driver/puller, hose adapter, coupler and fire hose. It is equipped with fork truck lift slots and retaining pins for
installation/removal.
CABLE REEL STORAGE BOX: Provides storage area for cable reel.
FUME HOOD VENT DOOR: Hinged, double-latched access door for fume hood vent. Must be open when
operating exhaust blowers.
PURGE INTAKE DOOR: Hinged, double-latched access door for purge intake damper. Must be open during
purge cycle to allow environmental control unit to suck outside air into the laboratory. An alarm buzzer, which
indicates a purge door closed during a purge cycle, is located behind this door.
PURGE EXHAUST DOOR: Hinged, double-latched access door for purge exhaust damper. Must be open during
purge cycle to allow air to be exhausted from the laboratory. An alarm buzzer which indicates a purge door
closed during a purge cycle, is also located behind this door.
TRAILER ACCESSORIES STORAGE DOOR: Provides access to storage area for trailer accessories; i.e.,
roadside reflectors, wheel chocks, various tools, wiping rags, etc.
ENVIRONMENTAL CONTROL UNITS: Provide heating and cooling of the laboratory. The four units are
identical but each has its own individual controls.
SPECTROMETER HOT GAS VENT; Vents hot gas from spectrometer cabinet.
POWER ENTRANCE BOX: Provides power input to van and connection for grounding generator. Also contains
purge alarm and purge timer.
1-8
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