CAPT Electrical System Panel, P18-3
Row Col Number Name
A 6 C00148 ANTI-ICE & RAIN ENG 1 & WING CONT
A 7 C01001 ANTI-ICE & RAIN ENG 1 COWL AI VALVE
B 6 C00149 ANTI-ICE & RAIN ENGINE 2 CONTROL
B 7 C01002 ANTI-ICE & RAIN ENG 2 COWL AI VALVE
F/O Electrical System Panel, P6-2
Row Col Number Name
C 4 C00154 ENGINE 2 START VALVE
G. Left Anti-Ice Overpressure Pressure Sensor Installation Test
SUBTASK 30-21-21-710-003
(1) Do this test of the left cowl TAI duct overpressure detection circuit:
(a) Disconnect the electrical connector from the left engine duct overpressure switch.
(b) Connect a jumper wire between pins 1 and 2 of the connector.
1) Make sure the left COWL ANTI-ICE light comes on.
(c) Remove the jumper wire from the connector.
(d) Re-connect the connector to the overpressure switch.
(e) Make sure the left COWL ANTI-ICE light is off.
H. Right Anti-Ice Overpressure Pressure Sensor Installation Test
SUBTASK 30-21-21-710-004
(1) Do this test of the right cowl TAI duct overpressure detection circuit:
(a) Disconnect the electrical connector from the right engine duct overpressure switch.
(b) Connect a jumper wire between pins 1 and 2 of the connector.
1) Make sure the right COWL ANTI-ICE light comes on.
(c) Remove the jumper wire from the connector.
(d) Connect the connector to the overpressure switch.
(e) Make sure the right COWL ANTI-ICE light is off.
I. Put the Airplane back to its Usual Condition
SUBTASK 30-21-21-410-001
(1) For the right fan cowl panel, do this task: Close the Fan Cowl Panels,
TASK 71-11-02-410-801-F00.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-21-21
Page 407
D633A101-ILF Jun 15/2016
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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