
Cirrus Perspective
™
by Garmin – Cockpit Reference Guide for the SR20/SR22
190-00821-02 Rev. A
10
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TKS FIKI Anti-ice System
In the default tank selection mode (AUTO), Perspective
™
assures the fluid level in
the two tanks is kept relatively even by periodically closing the tank with the lowest
level. Perspective
™
uses the TKS fluid tank quantity to control the tank shut-off valves.
When the system is on and operating in AUTO mode, the shut-off valves close under
the following conditions:
• Theleftandrighttanktanklevelimbalanceisgreaterthan0.25gallons(low
tankwillbecloseduntillevelbalanceiswithin0.15gallons)
• The uid quantity is empty (indicated fromtheuid level sensor and level
switch)
• Theuidquantityisunreliable(amiscomparebetweenthelevelsensorandlevel
switch or an out of range level sensor value)
Manual tank mode allows the pilot to control either tank’s shut-off valve. Manual
may be selected by pressing the ANTI-ICE Softkey to access the second-level softkeys
LEFT, AUTO, and RIGHT.
• LEFT Softkey – opens left tank valve and closes right tank valve
• AUTO Softkey – returns to AUTO tank mode
• RIGHT Softkey – opens right tank valve and closes left tank valve
While operating in manual tank mode, only the selected/open tank’s quantity is
used for the range and endurance calculations.
Manual Tank Mode (Left tank selected)
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