Desa B350D Service Manual Manual pdf 13 page image
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Desa B350D Service Manual

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

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Contents
  1. Table Of Contents
  2. Section 1 - Safety Information
  3. Technical Service Department
  4. Electrical
  5. Heater Performance Specifications
  6. Fuel System
  7. Fuel Filters
  8. Electrical System
  9. Ignition Transformer
  10. Using an Ohmmeter
  11. Spark Plug Sparks, but Motor Does Not Start
  12. Motor Starts, but Heater Will Not Ignite
  13. Heater Ignites, and Flame Is Established, However, Flame Control Trips and Heater Shuts Off
  14. Heater Does Not Start. Motor and Transformer Do Not Operate
  15. Carbon Build-Up Inside Combustion Chamber
  16. Section 6 - Accessories and Service Information
Desa B350D Service Manual Manual pdf 13 page image
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 L13C. Incorrect fuel pump pressure1. Install pressure gage to fuel pump portmarked “GAGE.” This gage should havea full scale reading of 150-200 psi.2. Connect heater to electrical power to testfire heater.3. Adjust pump pressure by turning slottedscrew at fuel pump port marked “PRESSADJ.” Turn screw clockwise to increasepressure. Turn screw counterclockwiseto decrease pressure. See HEATER PER-FORMANCE SPECIFICATIONS on page6 for proper fuel pump pressure.D. Dirty or damaged nozzle1. Remove upper shell of heater.2. Remove burner head from combustionchamber.3. Remove nozzle from burner head.4. If nozzle is dirty, do not attempt to cleanby inserting wire into orifice opening.Soak nozzle in a non-flammable solventand use compressed air to dislodge anydirt in nozzle. Replace worn or damagednozzle with new nozzle.POSSIBLE CAUSESA. Poor fuel qualityB. Spark plug tip is too close to spray patternof nozzleC. Incorrect fuel pump pressureD. Dirty or damaged nozzleTEST PROCEDURESA. Poor fuel qualityUse good quality fuel. See GENERAL SPECI-FICATIONS AND APPLICATIONS INFOR-MATION, page 5, for fuel guidelines.B. Spark plug tip is too close to spraypattern of nozzle1. Remove upper shell of heater.2. Remove spark plug from burner head.3. Clean and regap spark plug. Correct gapfor spark plug is .05/.06 inch.4. Install plug in burner head.5. Replace upper shell on heater.6. Connect heater to electrical supply to testfire heater.7. Shut heater off, unplug heater, and re-move spark plug to determine if electrodeis wet. If electrode is wet, place a 0.1"metal washer/spacer between burnerhead and spark plug. This will keep theplug out of the spray pattern of nozzle.8. Retest heater. Install additional metalwasher(s)/spacer(s) if needed.psiFigure 14 - Checking Fuel Pump Pressure1/4 NPT(Pipe) ThreadsFigure 13 - Adding MetalWasher/Spacer to Spark PlugFigure 15 - NozzleTROUBLESHOOTING — PROBLEM CONDITIONSOBSERVED PROBLEMFrequent spark plug fouling/delayed ignition
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This manual is suitable for:
B350D
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