S 864-015

 (3)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6-4 circuit breaker panel:

 (a)  
6A1 TEMP CONTROL 35 F CONTROL R

 (b)  
6A2 TEMP CONTROL 35 F CONTROL L

 (c)  
6A3 TEMP CONTROL AUTOMATIC R

 (d)  
6A4 TEMP CONTROL AUTOMATIC L

 (e)  
6A5 TEMP CONTROL MANUAL

 (f)  
6B1 AIR CONDITIONING BLEED AIR VALVES ISOLATION

 (g)  
6B2 AIR CONDITIONING BLEED AIR VALVES R

 (h)  
6B3 AIR CONDITIONING BLEED AIR VALVES L

 (i)  
6C1 VALVES TURBO FAN R

 (j)  
6C2 VALVES TURBO FAN L

 (k)  
6C3 VALVES PACK R

 (l)  
6C4 VALVES PACK L

 (m)  
6D2 TEMP IND

 (n)  
6D3 VALVE POS

 (o)  
6E1 RAM MOD R

 (p)  
6E2 RAM MOD L

 (q)  
6E3 RAM MOD CONT (If installed)

 S 864-013
 (4)  Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6-3 panel:
 (a)  
MASTER CAUTION (all except FUEL, if installed)

 (b)  
INDICATOR LIGHTS, MASTER DIM BUS (9 locations)

 (c)  
DIM & TEST (1 location)

 (d)  
NOSE GEAR AIR/GND

 (e)  
LANDING GEAR AIR/GND RELAY & LTS

 S 714-007
 (5)  Do a test of the temperature controller:
 (a)  
Supply electrical power (Ref 24-22-00/201).

 (b)  
Do the test instructions on the front of the temperature controller.

 (c)  
Remove the electrical power if it is not necessary
 (Ref 24-22-00/201).

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TEMPERATURE INDICATING SYSTEM - DESCRIPTION
___________________________________________
 1.  General_______
 A.  The temperature indicating sytem permits monitoring passenger cabin temperatures and passenger cabin supply air temperature from the control cabin.
 B.  The temperature indicating system includes a temperature indicator, an AIR TEMP selector, and two temperature bulbs. When power is supplied to the 28V dc bus-1 and the TEMPERATURE INDICATION circuit breaker is closed, the selected temperature will be indicated.
 2.  Temperature Bulbs_________________
 A.  Each temperature bulb contains an element whose resistance varies with changing temperature. A bulb is installed in the supply duct and with the passenger cabin temperature sensor below the stowage compartment in the forward passenger cabin.
 3.  Operation_________
 A.  Functional Description
 (1)  
Passenger cabin air supply and passenger cabin temperatures may be monitored by the temperature indicator on the forward overhead panel. The temperature is indicated according to the position of the AIR TEMP selector.

 (2)  
The AIR TEMP selector switch permits switching between SUPPLY DUCT and PASS CABIN temperature.

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 ALL  ú ú 01 Page 1 ú Jun 25/84
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
OVERHEAD DISTRIBUTION DUCT
SEE C
PASSENGER CABIN TEMPERATURE BULB
SEE  A 
CABIN 
ESEE (P5-17) MODULE TEMPERATURE  DSEE DISTRIBUTION OVERHEAD DUCT 

AIRPLANES WITH OVAL OVERHEAD
DISTRIBUTION DUCT

CEILING
PANEL
AIRPLANES WITH ROUND OVERHEAD
DISTRIBUTION DUCT

PASSENGER CABIN
TEMPERATURE BULB

SEE B
A
TEMPERATURE BULB
INBDTEMPERATURE BULB
FWD B2
B1
1
AIRPLANES WITH 18-INCH AISLE
　
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