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the pilot when placing the GND switch on the
MAINTENANCE PANEL to TEST. Placing the
switch to TEST will cause the NO. 1 and NO.
2 ENG CHIP DET, XMSN OIL HOT and
XMSN CHIP DET cautions to illuminate.
The GND switch allows the flight engineer to perform a BITE
(Built In Test Equipment) test on the circuitry of the MAINTENANCE
PANEL. The switch is springloaded and locked at
center-off position. At TEST, a black and white display appears
on all magnetic BITE indicators. At RESET, all magnetic
BITE revert to an all-black indication. Power is supplied
to the switch by the No. 1 DC bus through the HYDRAULICS
MAINT PNL circuit breaker No. 1 PDP.
2-9-9. Windshield Wipers.
CAUTION
To prevent windshield damage, do not operate
windshield wipers when windshield
are dry.
Two electrically driven windshield wipers (3, fig. 2-1-3) are
installed, one on each pilot windshield. One motor operates
both wipers through two flexible shafts and two windshield
wiper converters. The windshield wiper motor is controlled
by the W/S (windshield) WIPER switch located on the overhead
switch panel. Power is supplied by the No. 2 DC bus
through the WSHLD WIPER circuit breaker on the No. 2
PDP.
The W/S WIPER switch has five positions labeled OFF,
SLOW, MED, FAST, and PARK. Wiper speed can be adjusted
as desired, by rotating the switch from OFF. At OFF,
the wipers will stop immediately at any position on the arc
TM 1-1520-240-10
2-9-4
of travel. At PARK, the wipers stop and reposition against the
inside windshield frame.
2-9-10. Map and Data Case.
The map and data case is in the passageway. It holds
manuals, maps and other data.
2-9-11. Cockpit Rearview Mirror.
A rearview mirror is installed on the right center windshield
support to enable the pilot to observe the cargo
compartment.
2-9-12. Spare Lamp Stowage Box.
The spare lamp stowage box is in the cockpit on top of
the No. 1 PDP. Spare lamps are provided for the instrument
post lights, instrument light shields, dome lights,
cabin and ramp lights, and nacelle work lights.
2-9-13. Cockpit Utility Receptacles.
Two 28-volt DC utility receptacles are in the cockpit, one
on No. 1 PDP and one on No. 2 PDP. Each receptacle is
labeled UTIL RCPT 28V DC. Power to operate the copilot
receptacle is supplied by the No. 1 DC bus through the
UTILITY COPLT circuit breaker on the No. 1 PDP. Power
to operate the pilot receptacle is supplied by the No. 2 DC
bus through the UTILITY RCPT PILOT circuit breaker on
the No. 2 PDP.
2-9-14. AC Cabin Utility Receptacles.
A 115 volt, single-phased 400 Hz AC utility receptacle
and a 200 volt 3-phase 400 Hz AC utility receptacle are
on each side of the cabin at sta 320. The receptacles are
accessible after the acoustical access cover and the receptacle
dust cap are removed. Power to operate the 115
volt receptacles is supplied by the No. 1 and No. 2 AC
buses through the LH and RH UTIL RCPT circuit breakers
on the No. 1 and No. 2 PDP. Power to operate the 200
volt receptacles is supplied by the No. 1 and No. 2 AC
busses through the LH and RH CABIN AC RCPT
3-phase circuit breakers on the No. 1 and No. 2 PDP.
2-9-15. DC Cabin Utility Receptacles.
Four 28-volt DC utility receptacles with three outlets are
on the sidewalls of the cargo compartment. Power to
operate the left cabin utility receptacles is supplied by the
No. 1 DC bus through the UTILITY LH FWD and LH AFT
circuit breakers on the No. 1 PDP. Power to operate the
right cabin utility receptacles is supplied by the No. 2 DC
bus through the UTILITY RCPT RH AFT and RH FWD
circuit breakers on the No. 2 PDP.
2-9-16. Ash Trays.
Three ash trays may be installed in the cockpit, one for
each pilot and one for the troop commander.
2-9-17. Compass Correction Card Holder.
The magnetic compass correction card holder is attached
to the left side of the magnetic compass. The card
contains the necessary deviation values which are applied
to the indicated reading.
2-9-18. Pilot Assist Straps.
Two assist straps are attached to the center window
frame of the cockpit structure to provide the pilots with a
hand hold while getting into the seats. The assist straps
can be positioned flat against the structure after use.
TM 1-1520-240-10
2-10-1
SECTION X. HEATING, VENTILATION, COOLING, AND ENVIRONMENTAL
CONTROL SYSTEMS
2-10-1. Heating and Ventilating System.
A 200,000 btu/hr capacity internal combustion heating
system is provided. it consists of a heater unit, a fuel
control unit, an ignition assembly, a blower, control relays,
　
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