Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 716

SECTION 9 - SUPPLEMENTS
SUPPLEMENT 1
AIRPLANE SYSTEMS AND DESCRIPTIONS
TKS ICE
INDICATION AND MESSAGING
Activation of MAX FLOW AIRFRAME mode will run both metering
pumps continuously for a period of two minutes. At the end of two
minutes, the system will return to the mode of operation selected with
the PRIMARY mode switch. MAX FLOW mode will terminate operation
after:
1. The timer turns the mode OFF after two minutes, or
2. The PRIMARY mode switch is selected to OFF.
Each two minute use of MAX FLOW AIRFRAME mode
consumes approximately one gallon of ice protection
fluid, representing 5% of the total fluid capacity of the
ice protection system. Use MAX FLOW AIRFRAME
mode only when in heavy or extreme icing conditions. If
conditions require MAX FLOW AIRFRAME use, exit the
icing conditions immediately.
The windshield
WINDSHIELD position (spring-loaded down) on the MAX FLOW
switch. The MAX FLOW switch is spring-loaded and will immediately
return to the center position. The windshield pump will run for
approximately four seconds after release of the switch. If the MAX
FLOW switch is continuously held in the WINDSHIELD position, the
windshield pump will continue to run when held down and four seconds
after the switch is released.
The windshield de-icing system is designed for intermittent operation to
establish pilot's forward vision as conditions require. The timer interval
is designed to provide an optimum burst of fluid for clearing the
windshield of ice. Momentary selection and release of the
WINDSHIELD switch will achieve the desired result.
S1-64 U.S.
PROTECTION
CAUTION
system may be
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MODEL 208B 867 SHP
GARMIN G1000
SYSTEM OPERATION,
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activated by
FAA APPROVED
208BPHCUS-S1-00
CESSNA
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selecting the