NO
INSPECT THE SUPPORT
FOR CRACKS
 
Noisy operation, compressor ON
Figure 103
 
NOISY OPERATION, PREREQUISITES
COMPRESSOR OFF "AIR COND.", "A/C CLUTCH", "EVAP. FAN"
AND "A/C CTL" CIRCUIT BREAKERS CLOSED
I
IS THE EVAPORATOR FAN YES REPLACE THE
NOISY ? EVAPORATOR FAN
NO
ARE THE BEARINGS OF
THE COMPRESSOR
CLUTCH OR THE IDLER
PULLEY NOISY ?   
 YES  REPLACE THE DEFECTIVE
BEARINGS
   
   
 NO   
    
    
    
CHECK SYSTEM
ATTACHMENT HARDWARE
FOR TIGHTENING
Noisy operation, compressor OFF
Figure 104
WA
Validity : KEITH 21-55-00Page 106
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COMPRESSOR DOES NOT PREREQUISITES
RUN "AIR COND.", "NC CLUTCH", "EVAP. FAN"
AND "NC CTL" CIRCUIT BREAKERS CLOSED

•  
DOES THE INCIDENT TAKE YES HEAT REFRIGERANT GAS
PLACE DURING  TO INCREASE PRESSURE
 • 
REFRIGERANT CHARGING ?  (MM 12-15-01)
 NO  
  CHECK THE WIRING
  

Compressor does not run
Figure 105
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Validity : KEITH 21 55-00Page 107
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PAGE INTENTIONALLY LEFT BLANK
AAAA
Validity : KEITH 21 - 55 - 00 Page 108
(BA) AUG 01
 
VAPOR CYCLE COOLING SYSTEM
ADJUSTMENT/TEST
1. OPERATIONAL TEST - VAPOR CYCLE COOLING SYSTEM
A. Tools and consumable materials
None
B. Procedure
1) Start engine.
2) On "AIR CONDITIONING" control panel, make sure S80 switch is set to "OFF".
3) Perform the following test :
 
ACTION
(1) On "AIR CONDITIONING" control panel, depress "NC" pushbutton.
(2) Release "A/C" pushbutton.
(3) Set S80 switch to "FAN" and B60 evaporator fan S81 switch to "LO".
(4) Set S80 switch to "AIR COND.".
(5) Set B60 evaporator fan S81 switch to "HI".
(6) Gradually advance the throttle to full power.
(7) Retard the throttle, set S80 switch to "OFF" then to "AIR COND.".
(8) Set S80 switch to "OFF" and B60 evaporator fan S81 switch to "LO".
4) Shut down engine.
 
RESULT
(a) Blue indicator light comes on.
(a) Blue indicator light goes off. (a) Air flows out of air outlets.
　
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本文鏈接地址：TB20 MAINTENANCE MANUAL 21 AIR CONDITIONING TB20飛機維護手冊 21 空調(diào)(22)