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27 Cards in this Set

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PURPOSE OF THE AIR CON SYST
1-TO DECR THE TEMP OF THE BL AIR SYST & DISTRIBUTE THE AIR TO THE COCKPIT & CABIN
TEMP IS CNTL'D HOW
THE PACKS DECR THE TEMP OF THE WARM AIR FM THE BL AIR SYST WITH A SEQUENCE OF HT EXCHANGERS & AN ACM
HT EXCHANGERS WORK HOW
THEY USE EXT AIRFLOW TO DECREASE THE TEMP OF THE WARM BL AIR
RAM AIR DOORS CNTL-
THE FLOW OF EXT AIR TO THE HT EXCHANGERS
WHEN ARE RAM AIR DOORS FULLY OPEN & WHEN ARE THEY FULLY CLOSE
ON THE GND AND DURING SLOW FLIGHT WITH THE FLAPS EXTENDED
FULLY CLOSED IN CRUISE FLT
TEMP CONTROLLER ADJUSTS-
THE TEMP OF THE AIR WHICH GOES OUT OF THE PACK
WHAT ARE AIR MIX VALVES AND THEIR FUNCTION
-EACH PACK HAS TWO
-ONE CONTROLS THE AMOUNT OF AIR THAT GOES THRU THE HT EXCHANGERS AND THE ACM, THE OTHER CNTLS AMOUNT OF AIR THAT GOES DIRECTLY TO THE MIXING CHAMBER
PACK SW ON AUTO THEN-
PACK ADJUSTS TO HI OR LOW FLOW TO KEEP SUFFICIENT PRESSURIZATION & CONDITIONING AIR IN THE CABIN
LEFT PACK SUPPLIES CONDITIONED AIR DIRECTLY TO THE
COCKPIT
THE MIX MANIFOLD FUNCTION
THIS IS WHERE THE SYSTEM MIXES THE REMAINING AIR FM L PACK & R PACK THE SUPPLIES THE CABIN
THE BENEFIT OF THE RECIRC FAN SYSTEM
THIS DECREASES ENG BL AIR DEMAND & TOTAL LOAD ON AIR CON PACKS
NORMAL SETTING FOR RECIRC FANS
AUTO UNLESS
-TWO PACKS OPERATE AND
-1 PACK SW IS HI
IN EQPT COOLING THE SUPPLY FAN COLLECTS AIR FM WHERE TO WHERE
FM THE PAX CABIN AND SUPPLIES IT TO THE COCKPIT DISPLAYS AND THE ELECT EQPT IN THE E&E BAY
THE EXHAUST FAN COLLECTS WARM AIR FM
THE COCKPIT DISPLAYS CCT BKR PANEL AND THE E&E BAY
WHEN IS THE OVBD EXHAUST VALVE OPEN AND WHEN IS IT CLOSED
OPEN ON THE GROUND & IN FLT WITH LOW DIFF PRESS
CLOSED IN FLT AT HI DIFF PRESS, THE SYST SUPPLIES AIR TO THE LINING OF THE FWD CARGO BAY (CAN PUT PETS)
DUCT OVHT LT ON WHEN
TEMP ABOVE LIMITS IN THE DUCT
THE AIR MIX VALVE MOVES TO FULL COLD, SELECT A COLDER TEMP WITH THE TEMP SELECTOR & PUSH TRIP RESET TO LET AIR MIX VALVE OPS AS USUAL
PACK TRIP OFF LT ILLUMS WHEN
1-TEMP INSIDE THE DUCT TO THE COCKPIT OR THE PAX CABIN GREATER THAN LIMITS
OR
2-AIR INSIDE A PACK IS GREATER THAN LIMITS
WHAT HAPPENS TO THE AIR MIX VALVES & THE PACK VALVE WHEN THE PACK TRIP LT ILLUMS
AIR MIX VALVES MOVE TO FULL COLD AND THE PACK VALVE CLOSES
TO REDUCE LOAD IN THE PACK YOU-
SELECT A HOTTER TEMP
PACK SUPPLIES AIR AT WHAT TEMP
TEMP OF THE LOWEST ZONE
WHAT'S THE TRIM AIR SYSTEM
THIS USES WARM BL AIR FM UPSTREAM OF THE AIR CON PACK TO WARM THE PACK TO THE NECESSARY TEMP OF THE RELATED ZONES
THE TWO RECIRC FANS ON THE -800 MOVE AIR FM
FWD CARGO TO MIX MANIFOLD, THESE FANS DECREASE LOAD ON THE ENGINE AND SAVE FUEL
TRIM AIR SW CNTLS
THE TRIM AIR REGULATOR AND SHUT OFF VALVE
TRIM AIR MODULATING VALVES FUNCTION
USED TO INCREASE THE TEMP IN THE OTHER ZONES TO THE NECESSARY TEMP
ZONE TEMP LT ILLUMS WHEN
1-THE TEMP IN THE SUPPLY DUCT TO THE COCKPIT OR PAX CABIN IS ABOVE LIMITS THE TRIM AIR MODULATING VALVE CLOSES, YOU GET MC AND AIR COND ANNUN
2-FAILURE IN THE PACK CONTROLLERS
3-IF PRIMARY & SECONDARY FLT DECK CONTROLLERS DON'T OPERATE
PACK LT ILLUMS IF
1-TEMP IN THE PACK IS TOO HI
2-IF THE PACK OUTPUT TEMP IS HIGH AND RELATED PACK VALVE CLOSES
3-IF BOTH PRIMARY &SECONDARY CONTROLLER FOR RELATED PACK DO NOT OPERATE
ACTIONS PACK LT ILLUMS
DECREASE LOAD ON THE PACK
-SELECT ALL TEMPS TO WARMER TEMP
-PUSH TRIP RESET