WINDSHIELD AIR OVERHEAT (W/S AIR O’HEAT CAUTION LIGHT ON AND MASTER CAUTION)
WINDSHIELD BLEED SWITCH LOW OR HI (AIR FLOW CYCLES OFF AND ON)
1. If Windshield Bleed Air Switch is HI - SELECT LOW.
NOTE
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If the controller has detected an overtemp and shut off the windshield bleed air, the system will cycle back on when the air temperature cools. Increased airspeed and selecting warmer cabin may improve controller efficiency and eliminate the overtemp cond
IF SATISFACTORY ANTI-ICE IS NOT MAINTAINED
2. Windshield Bleed Air Circuit Breaker - PULL.
3. Windshield Bleed Manual Valves - ADJUST to minimum flow.
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Use of EMER pressurization will reduce the effectiveness of windshield anti-ice.
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IF CONTINUING AIRFLOW, AIR WILL STILL BE TOO HOT BUT FLOW WILL BE REDUCED. MONITOR WINDSHIELD FOR EVIDENCE OF HEAT DAMAGE AND CLOSE WINDSHIELD MANUAL VALVES IF EVIDENCE OCCURS.
4. Windshield Alcohol Anti-Ice - AS REQUIRED.
5. Leave icing environment as soon as possible.
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Ten minutes alcohol available to the pilot's windshield only.
CONTINUED ILLUMINATION (NOT CYCLING, PROBABLE CONTROLLER FAILURE)
1. Windshield Bleed Manual Valves - OFF or REDUCE to minimum flow which will maintain adequate visibility.
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IF CONTINUING AIRFLOW, AIR WILL STILL BE TOO HOT BUT FLOW WILL BE REDUCED. MONITOR WINDSHIELD FOR EVIDENCE OF HEAT DAMAGE AND CLOSE WINDSHIELD MANUAL VALVES IF EVIDENCE OCCURS.
2. Windshield Alcohol Anti-Ice - AS REQUIRED.
3. Leave icing environment as soon as possible.
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Ten minutes alcohol available to the pilot's windshield only.
WINDSHIELD BLEED SWITCH OFF
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Indicates probable solenoid valve failure or leak. Windshield air temperature is not regulated. Windshield heat damage is possible. Maintenance is required.
1. Windshield Bleed Air Manual Valves - OFF.