(f)
Make sure that only the F/O STATIC 2 AUX P/S indicator light goes off.
WARNING:_______DO NOT TOUCH THE HEATERS TO KNOW THEY ARE ON. FEEL THE AIR CLOSE TO THE HEATERS TO KNOW THEIR TEMPERATURE. THE HEATERS CAN GET VERY HOT AND CAUSE INJURY IF YOU TOUCH THEM.
(g)
Make sure that only the lower left pitot tube gets hot.
(h)
Open the F/O LWR - L circuit breaker on the P18 panel.
(i)
Make sure the F/O STATIC 2 AUX P/S indicator light comes on.
(j)
Put the PITOT STATIC A switch in the off position.
S 865-021
(5)
Close the ELEVATOR PITOT - L circuit breaker on the P18 panel.
S 715-022
(6)
Do a test of the heater in the pitot tube for the left elevator.
(a)
Put the PITOT-STATIC B switch in the on position.
(b)
Make sure all the pitot tube heaters are off.
(c)
See that all the indicator lights on the Window and Pitot Heat Module stay on.
(d)
Put the PITOT-STATIC B switch in the off position.
CAUTION: DO NOT OPERATE ANY HEATER FOR MORE THAN 5 MINUTES.
_______ YOU CAN DECREASE THE LIFE OF THE HEATER IF YOU LET IT STAY ON.
(e)
Put the PITOT-STATIC A switch in the on position.
WARNING:_______DO NOT TOUCH THE HEATERS TO KNOW THEY ARE ON. FEEL THE AIR CLOSE TO THE HEATERS TO KNOW THEIR TEMPERATURE. THE HEATERS CAN GET VERY HOT AND CAUSE INJURY IF YOU TOUCH THEM.
(f)
Make sure that only the pitot tube for the left elevator gets hot.
(g)
Open the ELEVATOR PITOT - L circuit breaker on the P18 panel.
(h)
Make sure the L ELEV PITOT indicator light comes on.
(i)
Put the PITOT STATIC A switch in the off position.
S 865-026
(7) Close the TEMP PROBE circuit breaker on the P18 panel.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
30-31-00
ALL ú ú 03 Page 504 ú Mar 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 715-025
(8) Do a test of the heater in the temperature probe.
(a)
Put the PITOT-STATIC B switch in the on position.
(b)
Make sure all the pitot tube heaters are off.
(c)
See that all the indicator lights on the Window and Pitot Heat Module stay on.
(d)
Put the PITOT-STATIC B switch in the off position.
CAUTION: DO NOT OPERATE ANY HEATER FOR MORE THAN 5 MINUTES.
_______ YOU CAN DECREASE THE LIFE OF THE HEATER IF YOU LET IT STAY ON.
(e)
Put the PITOT-STATIC A switch in the on position.
(f)
Make sure that only the TEMP PROBE indicator light goes off.
WARNING:_______DO NOT TOUCH THE HEATERS TO KNOW THEY ARE ON. FEEL THE AIR CLOSE TO THE HEATERS TO KNOW THEIR TEMPERATURE. THE HEATERS CAN GET VERY HOT AND CAUSE INJURY IF YOU TOUCH THEM.
(g)
Make sure that only the temperature probe gets hot.
(h)
Open the TEMP PROBE circuit breaker on the P18 panel.
(i)
Make sure the TEMP PROBE indicator light comes on.
(j)
Put the PITOT STATIC A switch in the off position.
F. Do a test of the "B" pitot-static heater system.
NOTE: The Master Caution lights and ANTI-ICE annunciator will be
____
on for this test.
S 865-034
(1)
Close the F/O-UPPER R circuit breaker on the P18 panel.
S 715-027
(2)
Do a test of the heater in the top right pitot tube.
(a)
Put the PITOT-STATIC A switch in the on position.
(b)
Make sure that all the lights on the window and pitot heat module stay on.
(c)
Make sure all the pitot tube heaters are off.
(d)
Put the PITOT-STATIC A switch in the off position.
(e)
Put the PITOT-STATIC B switch in the on position.
(f)
Make sure that only the F/0 P/S 2 AUX STATIC indicator light goes off.
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