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AirComm Corporation Cessna 414 421 Air Conditioning System Service Manual R134a

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PROPRIETARY NOTICE 
 
The information contained in this document is the property of Air Comm Corporation 
and is proprietary and/or copyright material.  This information and this document may 
not be used without the express authorization of Air Comm Corporation.  Any 
unauthorized use or disclosure may be unlawful. 
 
The information contained in this document is subject to U.S. Export Control 
regulations.  Each recipient of this document is...

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Page vi  LIST OF EFFECTIVE PAGES 
SECTION PAGE DATE 
   
Title  i  September 13, 2013 
Record of Revisions  ii  September 13, 2013 
  iii  September 13, 2013 
  iv  September 13, 2013 
Proprietary Notice  v  September 13, 2013 
List of Effective Pages  vi  September 13, 2013 
Table of Contents  vii  September 13, 2013 
Introduction  1  September 13, 2013 
Air Conditioning System Description  2  September 13, 2013 
  3  September 13, 2013 
  4  September 13,...

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Page vii  TABLE OF CONTENTS 
 
1.0
 INTRODUCTION ....................................................................................................  1 
1.1 PURPOSE ........................................................................................................  1 
1.2 SCOPE .............................................................................................................  1 
1.3 ARRANGEMENT...

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Page 1  1.0 INTRODUCTION 
 
1.1 Purpose 
 
The purpose of this System Service Manual is to provide detailed instructions for 
the servicing, troubleshooting, checking and maintaining of the Air Comm 
Corporation, Inc. air conditioning systems using R134a refrigerant.  It is intended 
to be used for all Air Comm Corporation air conditioning systems using R134a 
refrigerant that do not contain separate maintenance instructions.  The System 
Service Manual...

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Page 2  SW    Switch 
VDC   - Volts Direct Current 
 
2.0  AIRCONDITIONING SYSTEM – SYSTEM DESCRIPTION 
 
2.1  Vapor Cycle System Description 
 
The Air Comm Corporation, (ACC), vapor cycle air conditioning system uses 
liquid refrigerant R134a to cool the aircraft cabin.  The major components for the 
R134a air conditioning system consist of a receiver/dryer, expansion valve, 
evaporator, compressor and condenser to cool the aircraft cabin.   Figure 1...

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Figure 1.  Air Conditioning Vapor Cycle System  
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