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side windows. Each windshield and side window incorporates an electrical heating element
and three temperature sensors. One sensor is used for normal temperature control and
another is used for overheat detection. The third sensor is a spare, and is used should one
of the other sensors fail.
The amount of heat supplied to the windshields and side windows is controlled by four
identical temperature controllers, one for each window. The controllers automatically
regulate power to the heating elements as selected by the LOW/HI WSHLD switches on the
ANTI--ICE control panel. When an overheat condition is detected, the associated controller
removes the power to the heater element and posts a caution message on the EICAS
primary page.
Windshield and Side Window Anti---Ice Controls
Figure 15---60---1
TEST
Used to test the windshield and side
window anti--ice system.
Caution messages appear during test.
Anti--Ice Control Panel
Overhead Panel
ANTI -- ICE
WING COWL DET
ICE
TEST
LH RH
OFF
ON
OFF
ON
LH RH
TEST
OFF
ON
LH RH
LOW
HI
LOW
HI
WSHLD PROBES
OFF / RESET OFF / RESET
ICE AND RAIN PROTECTION SYSTEM Vol. 1 15--60--2
Windshield and Side Window Anti--Ice
System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Windshield Temperature Control
Figure 15---60---2
AC BUS 1
CB1--A10
AC BUS 1
CB1--A11
AC BUS 2
CB2--A10
AC BUS 2
CB2--A11
AC
BUS 2
CB2--C7
AC
ESS
BUS
CB1--U10
SPARE
OVHT CONT
LEFT
WINSHIELD
HEATER
RIGHT
WINSHIELD
HEATER RIGHT
WINDOW
HEATER
LEFT
WINDOW
HEATER
CB2--G14 DC
BUS 2
28 VDC
BUS 1
CB1--G12 CB2--G13
DC
ESS
BUS
CB2--S4
OVHT
CONT
Anti--Ice Panel
Overhead Panel
CONTROLLER CONTROLLER CONTROLLER CONTROLLER
ICE AND RAIN PROTECTION SYSTEM Vol. 1 15--60--3
Windshield and Side Window Anti--Ice
System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Windshield and Side Window Anti---Ice EICAS Indications <1001>
Figure 15---60---3
L or R WINDOW HEAT caution (amber)
Indicates an overheat or a no heat condition
at the respective window heater.
L or R WSHLD HEAT caution (amber)
Indicates an overheat or a no heat condition
at the respective windshield heater.
Primary Page
ICE AND RAIN PROTECTION SYSTEM Vol. 1 15--60--4
Windshield and Side Window Anti--Ice
System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
HEATERS
L WSHLD AC BUS 1
1
A10--A11
Heaters
HEATER
L WIND
AC
ESSENTIAL
U10
HEATERS
R WSHLD
AC BUS 2 2
A10--A11
Windshield
HEATER
R WIND
C7
and Side
Window
Anti-Ice
HEATERS
CONT
L WSHLD
DC BUS 1 1 G12
Anti HEATERS
CONT L WIND
DC
ESSENTIAL S4
Controllers HEATERS
CONT
R WSHLD
DC BUS 2
2
G13
HEATERS
CONT
R WIND
G14
Vol. 1 15--70--1
ICE AND RAIN PROTECTION SYSTEM
Windshield Wiper System Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
1. WINDSHIELD WIPER SYSTEM
The windshield wiper system is designed to remove rain and/or snow from the pilot and
co-pilot’s windshields at speeds up to 250 knots.
The windshield wiper system consists of independent pilot and copilot systems. Each
system consists of a windshield wiper and motor with both systems being controlled by an
electronic control unit. Each pilot has a selector, located on the WIPER control panel that
actuates both wipers. Under normal operations, both wipers will operate in the same mode
when selected from either panel. If each selector is set to a different mode, the last
selection made overrides the previous selection. If one wiper system fails, the remaining
system will still be functional.
Windshield Wiper Control Panel
Figure 15---70---1
WIPER CONTROL PANEL
WIPER
STALL
PTCT
SLOW
FAST
OFF PARK
OFF
ON
INT
PUSHER
Vol. 1 15--70--2
ICE AND RAIN PROTECTION SYSTEM
Windshield Wiper System Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
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