D. The water and toilet drain anti-icing system deices the fore and aft toilet drain connectors. The toilet drain connectors are heated by electrical resistance elements installed as an integral part of the connector gasket. The heaters are controlled directly by their respective circuit breaker and are heated whenever the airplane has electrical power.
4. Rain Removal Systems
A. The windshield wiper system maintains clear areas on the No. 1 control cabin windows during takeoff, approach, and landing in rain or snow. The wipers are driven independently by electric motors, which are controlled by a common switch.
B. The rain repellent system sprays a rain repellent solution on the No. 1 control cabin windows and is used in conjunction with the windshield wiper system to improve visibility during heavy rain. The repellent solution for both windows is supplied from a common pressurized container, but is controlled independently by separate control switches for each window.
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30-00 Page 2 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Nov 15/67
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502 Ice and Rain Protection Systems
Aug 15/80 Figure 1 30-00
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
COMBINED WINDOW AND PITOT HEAT P5-9 MODULE - REMOVAL/INSTALLATION
1. General
A. The P5-9 Module located in the pilot overhead panel contains all control and test switches and indicating lights for the Pitot-Static and Temperature Probe Anti-Icing System and the Control Cabin Window Anti-Icing System.
2. Prepare for Removal
A. Open circuit breakers listed below:
(1)
On P6 Generator Bus No. 1 panel, open WINDOW ANTI-ICE circuit breakers:
(a)
L4 & L5 (d) CAPTAIN PITOT
(b)
R SIDE STATIC
(c)
L FRONT INDICATION
(2)
On P6 Generator Bus No. 2 panel, open WINDOW ANTI-ICE circuit breakers:
(a)
R4 & R5 (d) FIRST OFFICER (e) MASTER CAUTION
(b)
R FRONT PITOT STATIC ANTI-ICE
(c)
L SIDE INDICATION
(3)
On P18 Anti-Ice and Rain panel, open PITOT-STATIC and WINDOW HEAT CONTROL circuit breakers:
(a)
CAPT UPPER L (f) ELEVATOR PITOT L (k) RIGHT SIDE DC
(b)
CAPT LWR R (g) TEMP PROB (l) LEFT FWD AC
(c)
F/O UPPER R (h) RIGHT FWD AC (m) LEFT FWD DC
(d)
F.O LWR L (i) RIGHT FWD DC (n) LEFT SIDE AC
(e)
ELEVATOR PITOT R (j) RIGHT SIDE AC (o) LEFT SIDE DC
3. Remove P5-9 Module
A. Release four quick-release panel fasteners and lower module.
B. Disconnect electrical connectors.
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4. Install P5-9 Module
A. Connect electrical connectors.
B. Place module in position in overhead panel and secure panel fasteners.
C. Close circuit breakers opened in 2.A. and check module control switches and indicator lights.
(1)
Provide electrical power (Ref 24-22-0, M/P).
(2)
Check each indicator light (Push-to-test).
(3)
Test pitot static and temperature probe anti-icing system (Ref 30-31-0, A/T).
(4)
Deleted
(5)
Position each of the window heat switches to ON individually. Check that the corresponding window increases in temperature and that the amber OFF LIGHT indicator goes out.
(6)
With any window heat switch on, position test switch to PWR. Check that the respective window temperature increases and that the OVERHEAT light illuminates.
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