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 A.  General
 (1)  
This test does a check of the flight deck supplemental heating system. This system includes left and right foot heaters and a shoulder heater for each crew member. The foot heaters are on the floor and are conduction heaters that are electrically heated. The shoulder heaters are forced air convection heaters that are electrically heated. All the heaters are controlled by switches on the captain's or first officer's auxiliary panel. Each switch has an OFF, LOW, and HIGH position. The foot heaters operate fully on the ground and in flight. The shoulder heaters operate in the LOW position only while on the ground.

 B.  
Equipment

 (1)  
Temperature sensing pads - range 0 to 120°F (0
 to 49°C) - commercially available

 (2)  
Temperature sensor - range 0 to 120°F (0 to
 49°C) - commercially available

 (3)  
Cooling source - ice pack - commercially
 available

 C.  
References

 (1)  
24-22-00/201, Electrical Power - Control

 (2)  
27-61-00/201, Spoiler/Speedbrake Control System

 (3)  
32-09-02/201, Air/Ground Relays

 (4)  
36-00-00/201, Pneumatic - General

 D.  
Access

 (1)  
Location Zones
 211/212 Control Cabin - Section 41

 E.  
Procedure

 (1)  
Supply electrical power (Ref 24-22-00).

 S 865-005

 (2)  
Put the flight officer's shoulder heater switch, S1, and foot heater switch, S2, to OFF.

 S 865-004
 NOTE: The switches are on the flight officer's auxiliary instrument
____
 panel, P14.

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 21-45-00
 ALL  ú ú 01 Page 501 ú Jun 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
P11 PANEL
P13  P14 PANEL
P37 PANEL
PANEL
SEE  B 
HEATER FOOT
SEE  A  SEE  B  FWD 
FOOT ELECTRIC SURFACE HEATER A 
Supplemental Heating System Adjustment Test FWD SHOULDER AIR SUPPLY HEATER B SUPPLY HEATER SHOULDER AIR Figure 501 

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 21-45-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 865-006
 (3)  Put the captain's shoulder heater switch, S1, and foot heater switch, S2, to OFF.
 NOTE: The switches are on the captains's auxiliary instrument
____
 panel, P13.

 S 215-007
 (4)  
Push the L and R RECIRC FAN switch-lights on the overhead panel, P5, to ON.

 (a)  
Make sure the INOP lights do not come on.

 S 735-009
 (5)  
Do a test of the shoulder heater:

 (a)  
Make sure these circuit breakers on the right miscellaneous electrical equipment panel, P37, are closed: 1) 37F4, HEATERS F/O AUX HI 2) 37F3, HEATERS F/O AUX LO

 (b)  
Make sure these circuit breakers on the P70 panel are closed: 1) 70A6, CAPT AUX HTR HI 2) 70A5, CAPT AUX HTR LO

 (c)  
Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed: 1) 11S15, LANDING GEAR AIR/GND SYS 1 2) 11S19, LANDING GEAR AIR/GND SYS 2

 (d)  
Put the flight officer's shoulder heater switch on the P14 panel to HIGH. 1) Make sure the air temperature that comes from the shoulder

 heating nozzle does not increase during the subsequent two minutes.

 (e)  
Put the flight officer's shoulder heater switch S1 on the P14 panel to LOW. 1) Make sure the air temperature that comes from the shoulder

 heating nozzle increases during the subsequent two minutes.

 (f)  
Do the last four steps for the captain's shoulder heater with the switch on the P13 panel.

 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE
_______ ALL PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURY OR DAMAGE.
　
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