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remove ice accumulation on the flight surfaces by distributing a thin
film of glycol-based fluid on the wing, horizontal stabilizer, and
propeller. The presence of this fluid lowers the freezing temperature
on the flight surface below that of the ambient precipitation preventing
the formation and adhesion of ice.
The system consists of wing and horizontal stabilizer porous panels,
propeller slinger ring, proportioning units, metering pump, filter,
strainer, fluid tank, activation switch, filler cap, system plumbing, and
attaching hardware. The system operates on 28 VDC supplied through
the 5-amp ICE PROTECTION circuit breaker on Main Bus 1.
De-icing Fluid Tank
Serials before G3 Wing; The de-icing fluid tank is serviced through a
filler located on the LH side of the fuselage, just forward of the
baggage door. The fluid tank, located behind the rear cabin trim panel,
has a total capacity of 2.96 gallons.
Serials with G3 Wing; The de-icing fluid tank is serviced through a filler
located on the upper LH wing. The fluid tank, integral to the LH wing,
has a total capacity of 3.75 gallons.
Switching
Serials 0334 thru 0434; A three-position switch mounted on the center
console panel controls system operation.
Serials 0435 thru 2333, 2335 thru 2419, and 2421 thru 2437; Two
switches are mounted on the bolster panel. The first switch controls
system operation through ON and OFF positions, the second switch
controls system flow rate through MAXIMUM and NORMAL positions.
Serials with G3 Wing; Two switches are mounted on the bolster panel.
The ON/OFF switch energizes both the priming pump and the
metering pump simultaneously, the second switch controls system
flow rate through MAXIMUM and NORMAL positions.
Revision 05: 03-27-07
P/N 13772-115 11 of 16
Cirrus Design Section 9
SR22 Supplements
System Operation
Serials before G3 Wing; Upon activation, a two-speed metering pump
supplies fluid pressure to the system. Low pump speed provides the
required flow during NORMAL operation and high pump speed during
MAXIMUM operation.
Serials with G3 Wing; Upon activation, the metering pump and a
priming pump, mounted below the LH passenger seat, energize
simultaneously. The priming pump pulls de-icing fluid from the tank,
through a series of strainers, through the metering pump, check valve
and back to the de-icing fluid tank. Within 10 seconds the metering
pump primes, begins circulating de-icing fluid through the system, and
the priming pump shuts off. Low pump speed provides the required
flow during NORMAL operation and high pump speed during
MAXIMUM operation.
All Serials; From the metering pump, mounted below the LH
passenger seat, de-icing fluid is pushed through a filter, mounted
adjacent to the pump, and then carried to the proportioning units
located in the wing (Serials before G3 Wing only), empennage, and
cabin-floor forward through plastic tubing. Proportioning units regulate
flow to the porous panels attached to the leading edges of the wing
and horizontal stabilizer and to the propeller slinger ring.
De-icing fluid is carried from the proportioning units to the porous
panels where the fluid is discharged at a low, steady flow rate through
fine, laser-drilled holes.
De-icing fluid protects the propeller by a slinger ring mounted to the
spinner backing plate where the fluid is distributed by centrifugal
action onto grooved rubber boots fitted to the root end of the propeller
blades.
If icing is inadvertently encountered, the pilot switches the Ice
Protection switch to NORMAL or MAXIMUM to initiate de-icing fluid
flow along the protected surfaces. Pitot heat is turned ON and the time
is noted to aid in estimating de-icing fluid reserve. The pilot then
maneuvers to exit the icing conditions, turns cabin heat to maximum,
and windshield defrost and alternate induction air ON. Upon exiting
the icing conditions, the system is turned OFF.
Revision 05: 03-27-07
12 of 16 P/N 13772-115
Section 9 Cirrus Design
Supplements SR22
Figure - 3 (Sheet 1 of 2)
SR22_FM09_1527
FINGER
STRAINER
FLUID
TANK
VENT DRAIN
POROUS PANEL
POROUS PANELS
PROPORTIONING
PROPORTIONING UNIT
UNIT
PROPORTIONING
UNIT
POROUS PANEL
POROUS PANELS
PROPORTIONING
UNIT
VENT
FITTING
METERING
PUMP
FILTER
SLINGER RING
System Schematic - Serials before G3 Wing
Revision 05: 03-27-07
P/N 13772-115 13 of 16
Cirrus Design Section 9
SR22 Supplements
PROPORTIONING
UNIT
STRAINER
TUBE
　
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本文鏈接地址：AIRPLANE INFORMATION MANUAL for the CIRRUS DESIGN SR22(126)