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27 Cards in this Set
- Front
- Back
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PURPOSE OF THE AIR CON SYST
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1-TO DECR THE TEMP OF THE BL AIR SYST & DISTRIBUTE THE AIR TO THE COCKPIT & CABIN
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TEMP IS CNTL'D HOW
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THE PACKS DECR THE TEMP OF THE WARM AIR FM THE BL AIR SYST WITH A SEQUENCE OF HT EXCHANGERS & AN ACM
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HT EXCHANGERS WORK HOW
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THEY USE EXT AIRFLOW TO DECREASE THE TEMP OF THE WARM BL AIR
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RAM AIR DOORS CNTL-
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THE FLOW OF EXT AIR TO THE HT EXCHANGERS
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WHEN ARE RAM AIR DOORS FULLY OPEN & WHEN ARE THEY FULLY CLOSE
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ON THE GND AND DURING SLOW FLIGHT WITH THE FLAPS EXTENDED
FULLY CLOSED IN CRUISE FLT |
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TEMP CONTROLLER ADJUSTS-
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THE TEMP OF THE AIR WHICH GOES OUT OF THE PACK
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WHAT ARE AIR MIX VALVES AND THEIR FUNCTION
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-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 |
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PACK SW ON AUTO THEN-
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PACK ADJUSTS TO HI OR LOW FLOW TO KEEP SUFFICIENT PRESSURIZATION & CONDITIONING AIR IN THE CABIN
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LEFT PACK SUPPLIES CONDITIONED AIR DIRECTLY TO THE
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COCKPIT
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THE MIX MANIFOLD FUNCTION
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THIS IS WHERE THE SYSTEM MIXES THE REMAINING AIR FM L PACK & R PACK THE SUPPLIES THE CABIN
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THE BENEFIT OF THE RECIRC FAN SYSTEM
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THIS DECREASES ENG BL AIR DEMAND & TOTAL LOAD ON AIR CON PACKS
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NORMAL SETTING FOR RECIRC FANS
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AUTO UNLESS
-TWO PACKS OPERATE AND -1 PACK SW IS HI |
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IN EQPT COOLING THE SUPPLY FAN COLLECTS AIR FM WHERE TO WHERE
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FM THE PAX CABIN AND SUPPLIES IT TO THE COCKPIT DISPLAYS AND THE ELECT EQPT IN THE E&E BAY
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THE EXHAUST FAN COLLECTS WARM AIR FM
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THE COCKPIT DISPLAYS CCT BKR PANEL AND THE E&E BAY
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WHEN IS THE OVBD EXHAUST VALVE OPEN AND WHEN IS IT CLOSED
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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) |
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DUCT OVHT LT ON WHEN
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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 |
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PACK TRIP OFF LT ILLUMS WHEN
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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 |
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WHAT HAPPENS TO THE AIR MIX VALVES & THE PACK VALVE WHEN THE PACK TRIP LT ILLUMS
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AIR MIX VALVES MOVE TO FULL COLD AND THE PACK VALVE CLOSES
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TO REDUCE LOAD IN THE PACK YOU-
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SELECT A HOTTER TEMP
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PACK SUPPLIES AIR AT WHAT TEMP
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TEMP OF THE LOWEST ZONE
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WHAT'S THE TRIM AIR SYSTEM
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THIS USES WARM BL AIR FM UPSTREAM OF THE AIR CON PACK TO WARM THE PACK TO THE NECESSARY TEMP OF THE RELATED ZONES
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THE TWO RECIRC FANS ON THE -800 MOVE AIR FM
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FWD CARGO TO MIX MANIFOLD, THESE FANS DECREASE LOAD ON THE ENGINE AND SAVE FUEL
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TRIM AIR SW CNTLS
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THE TRIM AIR REGULATOR AND SHUT OFF VALVE
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TRIM AIR MODULATING VALVES FUNCTION
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USED TO INCREASE THE TEMP IN THE OTHER ZONES TO THE NECESSARY TEMP
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ZONE TEMP LT ILLUMS WHEN
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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 |
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PACK LT ILLUMS IF
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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 |
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ACTIONS PACK LT ILLUMS
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DECREASE LOAD ON THE PACK
-SELECT ALL TEMPS TO WARMER TEMP -PUSH TRIP RESET |
