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757 MAINTENANCE MANUAL
(b)
70A4, WINDOW HTR 3R
(c)
70C13, WINDOW HTR 1L
S 864-061
(5) Remove electrical power from the main AC buses if it is not necessary (AMM 24-22-00/201).
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757 MAINTENANCE MANUAL
WINDSHIELD RAIN REPELLENT SYSTEM - DESCRIPTION AND OPERATION
____________________________________________________________
1. General_______
A. Rain repellent is sprayed on the captain's and/or first officer's No. 1 window to provide a water repellent coating. The system uses main left and right 28-volt dc power, through circuit breakers on overhead circuit breaker panel P11.
B. System components include:
(1)
The windshield wiper/rain repellent control panel
(2)
Solenoid valves
(3)
Spray nozzles
(4)
A rain repellent container
(5)
A pressure gage
C. AIRPLANES WITH HYDROPHOBIC COATING ON THE WINDSHIELD; The rain repellent system consists of a hydrophobic coating applied to the number 1 window. No pilot actions are necessary to operate the system.
(1) Periodic maintenance is necessary to test and restore the coating on the windshield surface. A reference to the kit and procedures for this is in AMM 30-43-00/201.
2. Component Details (Fig. 1)_________________
A. Windshield Wiper/Rain Repellent Control Panel
(1) Windshield wiper/rain repellent control panel M10023 is on pilots' overhead panel P5. The control panel contains two switches to control the rain repellent system. A switch controlling the windshield wipers is also on the panel.
B. Solenoid Valves
(1) Two electrically operated solenoid valves control the flow of rain repellent to the No. 1 windows. The right solenoid valve is behind first officer's instrument panel P3. The left solenoid valve is behind captain's instrument panel P1.
C. Spray Nozzles
(1) Two nozzles on the fuselage and forward of the windshield, direct the rain repellent spray onto the windshields.
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本文链接地址：757 AMM 飞机维护手册 防冰和排雨 CHAPTER 30 - ICE AND RAIN PROTECTION(151)
