R (1) If the PDT 1 goes below 10 Deg.C:
R - do the functional test of the cockpit and cabin temperature control
R system (Ref. AMM TASK 21-63-00-720-001).

R (2) If the fault continues:

R (a) Remove the inspection panel on the pack 1 ram-air inlet plenum
R (10HM14).

R (b) Do a check of the water injector nozzle for damage or wear:
R - replace the water injector nozzle if it is worn or damaged
R (Ref. AMM TASK 21-52-00-960-001).

R (c) Do a check of the main heat exchanger (10HM7) for contamination:
R - if the main heat exchanger is clogged do the cleaning of the
R clogged main heat exchanger (10HM7) and the clogged primary
R heat exchanger (10HM6) (Ref. AMM TASK 21-52-00-100-001).

R (d) Install the inspection panel on the pack 1 ram-air inlet plenum
R (10HM14).

R (3) If the fault continues:
R - do a check that the resistance of the water extractor temperature
R sensor (11HH) measured between connector A/E and A/F and connector
R A/C and A/D is in these limits (Ref. ASM 21-61/04):
R Temp (Deg.C) OHMS
R ---------------------------R + 10 18820 +/- 5 %
R + 18 13340 +/- 5 %
R + 25 10000 +/- 5 %
R + 30 8197 +/- 5 %
R + 40 5598 +/- 5 %
R + 50 3903 +/- 5 %

R (a) If the resistance values are out of the specified limits:
R - replace the SENSOR-WATER EXTRACTOR TEMPERATURE (11HH) (Ref. AMM
R TASK 21-61-13-000-001) and (Ref. AMM TASK 21-61-13-400-001).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, 401-499, ∞∞21-61-00∞∞∞∞∞∞∞∞∞∞Page A236
 Aug 01/05 CES

R (4) If the fault continues:
R - replace the CONT-AIR COND SYSTEM 1 (47HH) (Ref. AMM TASK 21-61-34-R 000-002) and (Ref. AMM TASK 21-61-34-400-002).

R (5) If the fault continues:
R - do a check of the position of the manual override lever of the pack
R 1 anti-ice valve (17HH).

R (a) If the valve is not closed:
R - disconnect the electrical connector (17HHA) (Ref. AMM TASK 21-
61-41-000-001). R - do a check for 28 VDC at the electrical connector (17HHA) R between pins A and B (Ref. ASM 21-61/04).
R 1_ If the voltage is correct:
R - replace the VALVE-ANTI ICE (17HH) (Ref. AMM TASK 21-61-41-R 000-001) and (Ref. AMM TASK 21-61-41-400-001).

R 2_ If the voltage is not correct:
R - do a check and repair the wiring (Ref. ASM 2161S04) from:
R - the VALVE (17HH)A pin A to the ACSC1 (47HH) and,
R - the VALVE (17HH) to ground.

R (6) If the fault continues: R - do a check of the reheater (10HM3) for contamination (Ref. AMM TASK 21-52-00-780-001).
R NOTE : This sub-paragraph (7) only applicable to reheaters with the
____ R P/N 755A0000-04 and previous. R It is not applicable to reheaters with the P/NIs 755A0000-04 R Amendment A or subsequent.
R (a) If the reheater is clogged: R - do the cleaning of the clogged reheater (10HM3) (Ref. AMM TASK 21-52-00-100-002),
R (7) If the fault continues: R - do the cleaning of the clogged condenser (10HM2) (Ref. AMM TASK 21-52-00-100-003),
R (8) If the fault continues:
R - do a check of the position of the manual override lever of the pack
R 1 flow control-system (23HB).

R (a) If the valve is not fully open:
R - replace the FLOW CONTROL SYSTEM (23HB) (Ref. AMM TASK 21-51-51-R 000-001) and (Ref. AMM TASK 21-51-51-400-001).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 401-499, ∞∞21-61-00∞∞∞∞∞∞∞∞∞∞Page A237
 Aug 01/05 CES

R (9) If the fault continues:
R - do a check of the water drain line between the extractor (10HM8)
R and the injector (20HM) and the injector nozzle (20HM) for
R contamination and clean it if necessary (Ref. AMM TASK 21-52-16-R 000-001), (Ref. AMM TASK 21-52-16-400-001), (Ref. AMM TASK 21-52-R 42-000-001) and (Ref. AMM TASK 21-52-42-400-001).

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,

 E. If you cannot confirm this fault on the ground, but during the last flight a high PDT 1 (above 10 Deg.C) was reported:
 - replace the SENSOR-PACK INLET PRESSURE (16HH) (Ref. AMM TASK 21-61-16-000-001) and (Ref. AMM TASK 21-61-16-400-002).
 (1) If the fault continues:
 - do a check for a ground signal at the PC 1 (7HH) connector AA/9B (Ref. ASM 21-61/03).
 (a) If there is no ground signal:
 - do a check and repair the wiring if necessary between: PC 1 (7HH) connector AA/9B and LGCIU 2 (5GA2) connector AB/G1 (Ref. ASM 21-61/03).
 1 If the fault continues:
　
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