NOTE: The control cabin temperature can be taken as approximately
____
the same as the passenger cabin.
S 715-086
(3) If the cabin temperature is less than 83°F (28°C), do this check of the automatic temperature control:
(a)
Move the CONT CABIN temperature selector switch, on the P5-17 panel, to a position which is a few degrees more than the cabin temperature.
(b)
Move the L PACK switch to AUTO or HIGH, on the P5-10 panel.
(c)
Make sure that the indicator needle of the CONT CABIN - AIR MIX VALVE indicator moves toward HOT, on the P5-17 panel.
S 715-087
(4) If the cabin temperature is more than 83°F (28°C), do this check of the automatic temperature control:
(a)
If the cabin temperature is more than 85°F (30°C), move the CONT CABIN temperature selector switch to 85°F (30°), on the P5-17 panel.
(b)
If the cabin temperature is between 83°F (28°C) and 85°F (30°C), move the CONT CABIN temperature selector switch to the cabin temperature.
(c)
Move the L PACK switch to AUTO or HIGH, on the P5-10 panel.
(d)
Make sure that the indicator needle of the CONT CABIN - AIR MIX VALVE indicator stays at COLD, on the P5-17 panel.
(e)
Move the CONT CABIN temperature selector switch to MANUAL WARM.
(f)
Make sure that the indicator needle of the CONT CABIN - AIR MIX VALVE indicator moves toward HOT.
(g)
Move the CONT CABIN temperature selector switch to AUTO NORMAL.
(h)
Make sure that the indicator needle of the CONT CABIN - AIR MIX VALVE indicator moves toward COLD.
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737-300/400/500MAINTENANCE MANUAL
S 715-088
(5)
Use your hand to feel and make sure that air enters the cabin at the cabin inlet.
S 865-089
(6)
Move the AIR TEMP switch to SUPPLY DUCT.
S 865-090
(7)
Hold the CONT CABIN temperature selector switch momentarily to MANUAL WARM while you monitor the temperature indicator, on the P5-17 panel.
S 215-091
(8)
Make sure that the temperature indication increases.
S 865-092
(9)
Hold the CONT CABIN temperature selector switch momentarily to MANUAL COOL while you monitor the temperature indicator.
S 215-093
(10)
Make sure that the temperature indication decreases.
S 865-094
(11)
Hold the CONT CABIN temperature selector switch to MANUAL WARM until the temperature indication increases to 77°F (25°C).
S 865-095
(12)
Move the CONT CABIN temperature selector switch to AUTO COOL.
S 215-096
(13)
Let the temperature indication become stable.
S 215-097
(14)
Make sure that the temperature indication is at 39|5°F (4|3°C).
NOTE: Refer to 36-11-05/101, Engine Bleed Air Distribution System,
____ or 21-51-00/101, Air Cycle System, if the temperature indication does not become stable at 39|5°F (4|3°C).
S 865-098
(15) Move the L PACK switch to OFF.
F. Operational Test - Temperature Control System (Passenger Cabin)
S 865-187
(1)
Move the AIR TEMP switch to PASS CABIN, on the P5-17 panel.
S 975-100
(2)
Monitor the temperature indicator, on the P5-17 panel, and make a record of the cabin temperature.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 715-101
(3) If the cabin temperature is less than 83°F (28°C), do this check of the automatic temperature control: (a) Move the PASS CABIN temperature selector switch, on the P5-17 panel, to a position which is a few degrees more than the cabin temperature. (b) Move the R PACK switch to AUTO or HIGH, on the P5-10 panel. (c) Make sure that the indicator needle of the PASS CABIN - AIR MIX VALVE indicator moves toward HOT, on the P5-17 panel.
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