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Figure 15---50---2
Primary Page
TAT PROBE HEAT caution (amber)
Comes on to indicate failure of total air temperature
probe heater.
<0039> <0006>
STBY PITOT HEAT caution (amber)
Comes on to indicate failure of the standby pitot
heater.
PITOT BASE HEAT caution (amber)
Comes on to indicate failure of the pitot base heat.
L, R PITOT HEAT caution (amber)
Comes on to indicate no current to corresponding
pitot--static heater (or PROBES switch not at ON).
L, R STATIC HEAT caution (amber)
Comes on to indicate failure of corresponding static
port heater.
L, R AOA HEAT caution (amber)
Comes on to indicate failure of corresponding angle
of attack vane heater.
Vol. 1 15--50--5
REV 56, Jan 31/03
ICE AND RAIN PROTECTION SYSTEM
Air Data Sensor Anti--Ice System
Flight Crew Operating Manual
CSP A--013
MASTER
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
PITOT L AC ESS 3 B4
Pitot PITOT R AC BUS 1 1 A14
PITOT STBY AC ESS 3 B6
Static
STATIC L DC ESS 4 A6
Air Data
Sensor
STATIC R DC BUS 1 1 F14
Anti-Ice AOA
Anti AOA L AC ESS 3 B5
AOA R
AC BUS 1 1
A13
TAT TAT
A12
ADS ADS CONT 1 DC ESS 4 A7
Controllers ADS CONT 2 DC BUS 1 1 F13
REV 56, Jan 31/03
Vol. 1 15--50--6
ICE AND RAIN PROTECTION SYSTEM
Air Data Sensor Anti--Ice System
Flight Crew Operating Manual MASTER
CSP A--013
THIS PAGE INTENTIONALLY LEFT BLANK
Vol. 1 15--60--1
REV 56, Jan 31/03
ICE AND RAIN PROTECTION SYSTEM
Windshield Wiper System
Flight Crew Operating Manual
CSP A--013
MASTER
1. WINDSHIELD AND SIDE WINDOW ANTI--ICE AND DE--FOGGING SYSTEM
Anti-icing and defogging of the windshields and side windows is achieved by electrically
heating the windshields and 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 if 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 the switches are set to HI, the windshields are heated at a
high temperature, but the side window temperatures are maintained at the LOW setting.
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.
NOTE
If a windshield or side window heater fails, the related
windshield or side window may fog up during high
humidity conditions.
REV 56, Jan 31/03
Vol. 1 15--60--2
ICE AND RAIN PROTECTION SYSTEM
Windshield Wiper System
Flight Crew Operating Manual MASTER
CSP A--013
Windshield and Side Window Anti---Ice and De---Fogging
Figure 15---60---1
Anti--Ice Panel
Vol. 1 15--60--3
REV 56, Jan 31/03
ICE AND RAIN PROTECTION SYSTEM
Windshield Wiper System
Flight Crew Operating Manual
CSP A--013
MASTER
Windshield and Side Window Anti---Icing and De---Fogging ---
Control and Primary Page Instructions <MST>
Figure 15---60---2
Primary Page
<0006>
<0039>
Windshield Anti--Ice TEST Switch
Used to test windshield anti--ice
system; simulates a no--heat
condition.
Anti--Ice Panel
L, R WSHLD HEAT caution (amber)
Comes on to indicate actual failure of
corresponding windshield anti--ice system,
or during a test.
L, R WINDOW HEAT caution (amber)
Comes on to indicate actual failure of
corresponding window heating system,
or during a test.
REV 56, Jan 31/03
Vol. 1 15--60--4
ICE AND RAIN PROTECTION SYSTEM
Windshield Wiper System
Flight Crew Operating Manual MASTER
CSP A--013
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
HEATER
LEFT WSHLD AC BUS 1 A10--A11
HEATER
CONT L
WSHLD
DC BUS 1
1
F12
Windshields HEATER
RIGHT
WSHLD
AC BUS 2
2
A10--A11
Windshield
and Side
HEATER
CONT R
DC BUS 2
F12
Window
Anti-Ice
WSHLD
HEATER
WIND L AC ESS 3 B3
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