March 9, 2010  
Technical Support (Trouble Shooting, Diagnosis and Repair)

I. Dash Heater-A/C Trouble Shooting, Diagnosis And Repair

   HVAC System Troubleshooting Guides

      Automatic Temp Control 2000 and Dual Zone ATC 2000 Control Systems
      Automatic Temp Control (ATC) System
      Dual Zone Dual Blower Rotary Control Systems
      Dual Zone Single Blower Rotary Control Systems
      Rotary-Action Control System
      Slide-Action / Push Button Control System

   Refrigerant Charge Information - R134A Systems

   Refrigerant & Service Recommendations

   System Oil Allowances - Individual Evans A/C Components

   A/C Fitting Torque Guide

   Assembly Instructions for Metal to Rubber (Compression) Fittings

   Evans Versus Chassis Supplied Heater A/C Parts

II. A/C System Testing and Evaluation

   A/C Systems Operational Check

   Estimated A/C Performance Guidelines

   Road Test GM/Workhorse Chassis with Chassis Supplied Low Pressure Switch


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