Desa ROPANE CONSTRUCTION HEATERS Owner's Manual

Also see for 150,000 BTU/Hr Models: Owner's manual Owner's manual

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Desa ROPANE CONSTRUCTION HEATERS Owner's Manual Manual pdf 10 page image

10099162LP-PFA/P 019B45/80 ModelsFAN CROSS SECTION LP-PFA/P 013FAN LP-PFA/P 023SERVICEPROCEDURESUpper Shell Removal1. Remove screws along eachside of heater using 5/16"nut-driver. These screwsattach upper and lowershells together.2. Lift or slide upper shell off.3. Remove fan guard.Fan MotorFigure 7 - Upper Shell Removal,150,000 BTU/Hr ModelFigure 6 -Upper Shell Removal,80,000 BTU/Hr ModelFigure 10 - Fan Cross SectionFigure 9 - Fan, Motor Shaft,and Setscrew Location80,000 BTU/HrModel ShownMotor shaftFanSetscrewFanFigure 8 - Fan Removal and Air SensingSwitch LocationAir SensingSwitchPaddle(80,000BTU/HrModelOnly)PaddleArmHubSetscrewMotorShaft! WARNINGNever service heater while it is plugged in, connected topropane supply, operating, or hot. Severe burns andelectrical shock can occur.FanIMPORTANT: Remove fanfrom motor shaft beforeremoving motor from heater.The weight of the motorresting on the fan coulddamage the fan pitch.1. Remove upper shell (seeabove).2. Use 1/8" hex wrench toloosen setscrew whichholds fan to motor shaft.3. Slip fan off motor shaft.Be careful not to strike airsensing switch paddle orpaddle arm (80,000 BTU/Hr model only).4. Clean fan using soft clothmoistened with kerosene orsolvent.5. Dry fan thoroughly.6. Replace fan on motor shaft.Make sure setscrew istouching back of flatsurface on motor shaft (seeFigure 10).7. Place setscrew on flat ofshaft. Tighten setscrewfirmly (40-50 inch-pounds).8. Replace fan guard andupper shell.