Desa B350D Service Manual

Also see for B350D: Owner's manual Owner's manual Owner's manual

Contents

H I G H P R E S S U R E P O R T A B L E F O R C E D A I R H E A T E R S E R V I C E M A N U A L2T A B L EO FC O N T E N T SSection 1 - Safety Information ................................................................................. 3Section 2 - IntroductionArrangement of Manual ...................................................................................... 4Technical Service Department ........................................................................... 4Service Preparation ............................................................................................ 4Tools Required ................................................................................................... 4Section 3 - General Specifications and Applications InformationFuel Section ....................................................................................................... 5Electrical ............................................................................................................. 5Ventilation .......................................................................................................... 5Heater Sizing ...................................................................................................... 5Heater Performance Specifications .................................................................... 6Wiring Diagrams ................................................................................................. 6Section 4 - Component OperationAll Systems Working Together ........................................................................... 8Fuel System ....................................................................................................... 8Fuel Pump ...................................................................................................... 8Fuel Filters ..................................................................................................... 9Nozzle ............................................................................................................ 9Electrical System ................................................................................................ 10Motor .............................................................................................................. 10Flame Control Assembly ................................................................................ 10Ignition Transformer ....................................................................................... 11Fuel Solenoid Valve ....................................................................................... 11Fan Switch ..................................................................................................... 11Section 5 - TroubleshootingSafety Requirements ......................................................................................... 12Using an Ohmmeter ........................................................................................... 12Setting Up the Ohmmeter .................................................................................. 12Calibrating the Ohmmeter .................................................................................. 12Diagnostic Information ....................................................................................... 12Problem ConditionsFrequent Spark Plug Fouling/Delayed Ignition .............................................. 13Spark Plug Sparks, but Motor Does Not Start ............................................... 14Motor Starts, but Heater Will Not Ignite ......................................................... 15Heater Ignites, and Flame Is Established, However, Flame Control Trips,and Heater Shuts Off ................................................................................. 18Heater Does Not Start. Motor and Transformer Do Not Operate ................... 21Carbon Build-Up Inside Combustion Chamber .............................................. 22Section 6 - Accessories and Service Information .................................................... 23