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AirComm Corporation Airbus AS350 Air Conditioner Instructions for Continued Airworthiness User Manual
AirComm Corporation Airbus AS350 Air Conditioner Instructions for Continued Airworthiness User Manual
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AIR CONDITIONER SERVICE MANUAL AS350-200M-1 Revision 6 February 17, 2015 1575 124thAvenue, Westminster, CO 80234 | Tel 303-440-4075 | Fax 303-440-6355 http://www.aircommcorp.com/ | [email protected] AIR COMM CORPORATION 1575 W. 124th Avenue WESTMINSTER, CO. 80234 PHONE: 303-440-4075 FAX: 303-440-6355 [email protected] INSTRUCTIONS FOR CONTINUED AIRWORTHINESS AIRBUS AS350 AIR CONDITIONING SYSTEM THIS HANDBOOK INCLUDES THE MAINTENANCE INFORMATION REQUIRED TO BE AVAILABLE BY FAR PART 27
AIR CONDITIONER SERVICE MANUAL AS350-200M-1 Revision 6 Page ii RESTRICTED DISCLOSURE NOTICE THIS PUBLICATION IS THE PROPRIETARY INTELLECTUAL PROPERTY OF AIR COMM CORPORATION AND IS DELIVERED TO THE RECIPIENT WITH THE EXPRESS CONDITION THAT IT AND THE INFORMATION CONTAINED HEREIN ARE NOT TO BE USED, DISCLOSED OR REPRODUCED IN PART OR IN WHOLE, FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN CONSENT OF AIR COMM CORPORATION. NO RIGHT IS GRANTED TO THE RECIPIENT TO DISCLOSE OR SO USE ANY INFORMATION CONTAINED IN THIS DOCUMENT OUTSIDE THE PURPOSE FOR WHICH IT WAS DELIVERED. THESE RESTRICTIONS DO NOT OPERATE TO NULLIFY OR LIMIT ANY RIGHTS GRANTED BY CONTRACT.
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AIR CONDITIONER SERVICE MANUAL AS350-200M-1 Revision 6 Page v LIST OF EFFECTIVE PAGES All pages contained herein are at latest revision shown in Record of Revisions. List of Effective Pages 1 – 53
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AIR CONDITIONER SERVICE MANUAL AS350-200M-1 Revision 6 Page vii TABLE OF CONTENTS CHAPTER 1 .................................................................................................................... 1 INTRODUCTION ......................................................................................................... 1 1. Scope .............................................................................................................. 1 2. Purpose .......................................................................................................... 1 3. Arrangement ................................................................................................... 1 4. Applicability ..................................................................................................... 1 5. Definitions ....................................................................................................... 1 6. Abbreviations .................................................................................................. 2 7. Precautions ..................................................................................................... 2 8. Units of Measure ............................................................................................. 2 9. Information Essential to Continued Airworthiness ........................................... 2 10. Reference Documents .................................................................................... 2 11. Distribution ...................................................................................................... 3 12. Changes to Instructions for Continued Airworthiness ..................................... 3 13. Air Conditioner Features ................................................................................. 3 14. Description of Vapor Cycle Air Conditioner and Installation ............................ 5 CHAPTER 2 .................................................................................................................... 7 AIRWORTHINESS LIMITATION SECTION ................................................................ 7 1. Airworthiness Limitations ................................................................................ 7 CHAPTER 3 .................................................................................................................... 9 INSPECTIONS AND OVERHAUL ............................................................................... 9 1. Inspection Requirements ................................................................................ 9 2. Component Overhaul / Replacement Schedule ............................................ 10 CHAPTER 4 .................................................................................................................. 11 LOCATION AND ACCESS ........................................................................................ 11 1. Location of Air Conditioner Components ...................................................... 11 CHAPTER 5 .................................................................................................................. 28 PLACARDS AND MARKINGS ................................................................................... 28 1. Placard and Marking Information .................................................................. 28 CHAPTER 6 .................................................................................................................. 30 SERVICING ............................................................................................................... 30 1. Safety Precautions ........................................................................................ 30
AIR CONDITIONER SERVICE MANUAL AS350-200M-1 Revision 6 Page viii 2. Servicing Information .................................................................................... 30 3. Lubrication Information ................................................................................. 32 4. System Leak Check ...................................................................................... 33 5. Suggested Equipment for Servicing .............................................................. 34 6. Consumable Materials .................................................................................. 34 7. Suggested Spares List .................................................................................. 35 CHAPTER 7 .................................................................................................................. 36 STANDARD PRACTICES AND INFORMATION ....................................................... 36 1. General Information ...................................................................................... 36 2. Fitting Torque Procedures and Values .......................................................... 36 3. Removal and Replacement of Forward Evaporator Assembly ...................... 37 4. Removal and Replacement of Forward Evaporator Blower Motor Assembly 38 5. Removal and Replacement of Aft Evaporator Assembly .............................. 39 6. Removal and Replacement of Aft Evaporator Blower Motor ......................... 39 7. Removal and Replacement of Condenser Assembly .................................... 40 8. Removal and Replacement of Condenser Blower Assembly ........................ 41 9. Removal and Replacement of Condenser Assembly .................................... 41 10. Removal and Replacement of Condenser Vane Axial Blower ...................... 42 11. Removal and Replacement of Compressor Drive Belt .................................. 42 12. Adjustment of Compressor Drive Belt ........................................................... 44 13. Removal and Replacement of Compressor Assembly .................................. 45 14. Removal and Replacement of Receiver Drier Bottle ..................................... 46 15. Removal and Replacement of Bypass Valve ................................................ 47 16. Removal and Replacement of Binary Switch ................................................ 47 CHAPTER 8 .................................................................................................................. 49 TROUBLESHOOTING ............................................................................................... 49 1. System Troubleshooting ............................................................................... 49 Figure 8-1 – Electrical Schematic, Side Baggage Mounted Condenser (Tail Boom Condenser Option identical except for additional condenser blower.).................... 51 Figure 8-2 – Electrical Schematic, Relay Panel ..................................................... 52 APPENDIX A ................................................................................................................. 53 WEIGHT AND BALANCE INFORMATION ................................................................ 53
AIR CONDITIONER SERVICE MANUAL AS350-200M-1 Revision 6 Page 1 CHAPTER 1 INTRODUCTION 1. Scope The scope of this manual encompasses scheduled and unscheduled maintenance procedures for continued airworthiness of Air Comm Corporation air conditioning system installed in the Airbus AS350 series helicopter. 2. Purpose The purpose of this manual is to provide aircraft field mechanic necessary information to maintain the air conditioning system. 3. Arrangement This manual is arranged by chapters which are broken down into paragraphs and sub- paragraphs. All chapters and paragraphs are listed in the front of this manual in the Table of Contents, and are further identified by their individual page number. 4. Applicability This manual is applicable to Airbus Helicopter models AS350 which are equipped with the Air Comm Corporation kit part number AS350-200, AS350-202 or AS350-204 air conditioner systems. 5. Definitions The following terms are provided to give a ready reference to the meaning of some words contained within this manual. These definitions may differ from those given by a standard dictionary. Ambient air temperature: Temperature of the air surrounding a person or object. Charging station: An air conditioning system service unit which is capable of evacuating and charging an air conditioner. Condensation: The process of changing a vapor into a liquid. Desiccant: Material used in a receiver/drier bottle, designed to absorb moisture from refrigerant. Heat load: The amount of heat which the air conditioner is required to remove from the aircraft cabin. Inches of mercury: A measurement of pressure, normally used for pressures below atmospheric, one inch of mercury is equal to approximately one half pound per square inch. Pressure, ambient: The pressure of the air surrounding a body, normally measured in pounds per square inch, or PSIG.
AIR CONDITIONER SERVICE MANUAL AS350-200M-1 Revision 6 Page 2 Refrigerant: A fluid which is used in an air conditioning system to absorb heat from the cabin and carry it outside the helicopter where it can be transferred to the outside air. Relative humidity: The ratio of the amount of water vapor in the air to the amount of water vapor required to saturate the air at the existing temperature. Thermostat: An air conditioning control which senses the temperature of the evaporator coil and causes the system to cycle or by-pass to maintain the proper temperature of cooling air. 6. Abbreviations gm: Gram kg: Kilograms inHg: Inches of Mercury In-lbs: Inch pounds Kg/cm: Kilograms Per Centimeter lbs: Pounds ml: Milliliters mm: Millimeters Nm: Newton-meters oz: Ounces Psig: Pounds Per Square Inch (gauge) 7. Precautions The following precautions are found throughout this manual, and will vary depending on the seriousness of the Hazard or Condition: WARNING: May be a maintenance procedure, practice, condition, etc., which could result in personal injury or loss of life. CAUTION: May be a maintenance procedure, practice, condition, etc., which could result in damage or destruction of equipment. NOTE: May be a maintenance procedure, practice, condition, etc., or a statement which needs to be highlighted. 8. Units of Measure All measurements contained within this manual are given in United States standard measurement, followed by metric conversion in parentheses. 9. Information Essential to Continued Airworthiness This manual provides information which is required for operation and maintenance of the Air Comm air conditioning system installed in the Airbus model AS350 series helicopter. After completion of the air conditioner installation this document must be placed with the appropriate existing aircraft documents. 10. Reference Documents The approval basis of the system covered by this ICA is Supplemental Type Certificate SR00643DE.