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
(BA) AUG 01
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
AAAA
Validity : KEITH 21 55-00Page 107
(BA) AUG 01
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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本文链接地址：TB20 MAINTENANCE MANUAL 21 AIR CONDITIONING TB20飞机维护手册 21 空调(22)
