BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual page 301

builds to above the trip point of the pressure
switch. If the system is not selected on, illu-
mination of a FAIL light indicates valve fail-
ure in the open position.
Illumination of either FAIL indicator is ac-
companied by illumination of the ANTI-ICE
annunciator and the flashing MASTER CAU-
TION lights.
Wing Anti-icing
General
The purpose of the wing anti-icing system
(Figure 10-6) is to maintain the leading edges
at a temperature that will prevent ice buildup.
To achieve this, hot air, under pressure, is ex-
tracted from the 14th-stage bleed-air manifold,
ducted to the leading edges, and ejected from
piccolo tubes to impinge on the leading-edge
inner surfaces.
PICCOLO
TUBE
TEMPERATURE
SENSOR
OVERHEAT
SENSOR
PRESSURE
RELIEF
VALVE
T/R
ANTI-ICE
SHUTOFF
VALVE
10-6 CL 601-3A/R
STAND-BY
THERMAL
SWITCH
14-TH STAGE
BLEED-AIR
SHUTOFF
VALVE
MODULATING
SHUTOFF VALVE
Figure 10-6. Wing Anti-icing
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
CL-600-2B16 PILOT TRAINING MANUAL
The 14th-stage bleed-air shutoff valves must be
open to provide air for the wing anti-icing system.
Operation
Normally, bleed air for the left wing is supplied
by the left engine while the right engine sup-
plies air for the right wing. The bleed-air flow
is controlled by a pair of modulating valves,
one for each wing, but operated together.
The wing anti-ice controller modulates the
wing anti-ice valves when the switch is se-
lected to the NORMAL position (Figure 10-7).
An isolation valve in the rear manifold duct
separates the left and right halves of the sys-
tem. This valve is normally closed.
In case of engine failure or the failure of one
valve, the isolation valve may be opened to
allow air from one engine to anti-ice both wings.
PRESSURE
SWITCHES
14-TH STAGE
BLEED-AIR
SHUTOFF
VALVE
ANTI-ICE
ISOLATION
VALVE
MODULATING
ANTI-ICING SHUTOFF VALVE
CONTROLLER
STAND-BY
THERMAL
SWITCH
PICCOLO
TUBE
TEMPERATURE
SENSOR
OVERHEAT
SENSOR
T/R
L t é e
L t d .
PRESSURE
RELIEF
VALVE
ANTI-ICE
SHUTOFF
VALVE
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