Desa BC115T Owner'S Manual Download Page 12

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105536

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IGNITION CONTROL ASSEMBLY

WARNING: High Voltage!

Figure 29 - Replacing Fuse

Fuse

Fuse
Cover

Fuse
Clips

Unplug heater.

Remove side cover screws (4) using 5/16" nut-driver to ex-
pose ignition control assembly (see Figure 15 or 16, page 9).

Remove fuse cover (see Figure 29).

Remove fuse from fuse clips (see Figure 29).

Replace fuse with fuse of the same type and rating (GMA-10).
Do not substitute a fuse with a higher current rating.

Replace fuse cover (see Figure 29).

Replace side cover (see Figure 15 or 16, page 9).

SERVICE PROCEDURES

Continued

PUMP ROTOR

(Procedure if Rotor is Binding)

Remove upper shell (see Upper Shell Removal, page 8).

Remove filter end cover screws using 5/16" nut-driver (see
Figure 25 or 26).

Remove filter end cover and air filters.

Remove pump plate screws using 5/16" nut-driver.

Remove pump plate.

Remove rotor, insert, and blades.

Check for debris in pump. If debris is found, blow out with
compressed air.

Install insert and rotor.

Check gap on rotor. Adjust to .003"/.004" (.076-.101 mm) if
needed (see Figure 27).

Note:

Rotate Rotor one full turn to insure the gap is .003"/.004"

(.076-.101 mm) at tightest position. Adjust if needed.

10. Install blades, pump plate, air filters, and filter end cover.

11. Replace fan guard and upper shell (see Upper Shell Removal,

page 8).

12. Adjust pump pressure (see Pump Pressure Adjustment, page 9).

Note:

If rotor is still binding, proceed as follows.

13. Perform steps 1 thru 6.

Figure 26 - Rotor Location, 115T/165T Models

Figure 25 - Rotor Location, 40/55T/70T Models

14. Place fine grade sandpaper (600 grit) on flat surface. Sand rotor

lightly in “figure 8” motion four times (see Figure 28).

15. Reinstall insert and rotor.

16. Perform steps 10 thru 12.

Rotor

Air Output
Filter

Insert

Fan Guard

Filter End Cover

Air Intake Filter

Blade

Pump Plate

Insert

Rotor

Air Output
Filter

Blade

Filter End Cover

Air Intake Filter

Pump Plate

Fan
Guard

Gap Adjusting Screw

Rotor

Blade

.003"/.004"
(.076-.101 mm)
Gap Measured
With Feeler
Gauge

Gap Adjusting Screw

Figure 27 - Gap Adjusting Screw Locations

Sandpaper

Figure 28 - Sanding Rotor

SERVICE PROCEDURES

Summary of Contents for BC115T

Page 1: ...ave this manual for future reference Save this manual for future reference For more information visit www desatech com For more information visit www desatech com TM TABLE OF CONTENTS SAFETY INFORMATION 2 PRODUCT IDENTIFICATION 3 UNPACKING 3 ASSEMBLY 3 THEORY OF OPERATION 4 FUELS 5 VENTILATION 5 OPERATION 5 STORING TRANSPORTING OR SHIPPING 6 PREVENTATIVE MAINTENANCE SCHEDULE 6 TROUBLESHOOTING 7 SE...

Page 2: ...e only a properly grounded three wire extension cord Plug into grounded outlet only Use only in areas free of flammable vapors or high dust content Minimum clearance from any combustible materials 8 feet 244 cm from hot air outlet 6 feet 183 cm from top and 2 feet 61 cm from sides and inlet Locate heater on a stable and level surface while hot or operat ing or a fire may occur Use only in well ven...

Page 3: ...ll Power Cord Ignition Control Assembly assembly on inside of side cover Thermostat Knob UNPACKING 1 Remove all protective packaging that has been applied to heater for shipment 2 Remove heater from carton 3 Check heater for any shipping damage If damage is found promptly inform dealer where heater was purchased ASSEMBLY FOR 40 55T AND 70T MODELS ONLY These models are furnished with a nose cone gu...

Page 4: ...e s and the mounting hardware is found in the shipping carton Tools Needed Medium Phillips Screwdriver 3 8 Open or Adjustable Wrench Hammer 1 Slide axle through wheel support frame Install wheels on axle IMPORTANT Place extended hub of wheel toward wheel support frame 2 Place cap nuts on axle ends Gently tap with hammer to se cure 3 Place heater on wheel support frame assembly Make sure air inlet ...

Page 5: ... 1 2 diesel fuel oil JET A or JP 8 fuels to avoid risk of fire or explo sion Never use gasoline oil drained from crank cases naphtha paintthinners alcoholorotherhighly flammable fuels TO START HEATER 1 Follow all ventilation and safety information 2 Fill fuel tank with kerosene 1 2 diesel fuel oil JETAor JP 8 fuels 3 Attach fuel cap 4 For thermostat models 55T 70T 115T and 165T turn ther mostat kn...

Page 6: ... tank Flush every 150 200 hours See Storing Transporting or of operation or as needed Shipping above Air output and lint filters Replace every 500 hours of See Air Output Air Intake operation or once a year and Lint Filters page 8 Air intake filter Wash and dry with soap and See Air Output Air Intake water every 500 hours of and Lint Filters page 8 operation or replace as needed Fuel filter Clean ...

Page 7: ...heck electrical connections See Wir ing Diagrams page 13 8 Replace photocell 9 Replace ignition control assembly POSSIBLE CAUSE 1 No power to heater 2 Thermostat setting is too low 3 Bad electrical connection between mo tor and ignition control assembly or ig nition control assembly and power cord 4 Binding pump rotor 5 Defective ignition control assembly 6 Defective motor 1 No fuel in tank 2 Pump...

Page 8: ...using a soft cloth moistened with kerosene or solvent 5 Dry fan thoroughly 6 Replace fan on motor shaft Place fan hub flush with end of motor shaft see Figure 10 7 Place setscrew on flat of shaft Tighten setscrew firmly 40 50 inch pounds 4 5 5 6 n m 8 Replace fan guard and upper shell Figure 9 Fan Motor Shaft and Setscrew Location Flush Fan Setscrew Motor Shaft Motor Figure 10 Fan Cross Section Se...

Page 9: ...er 2 Remove side cover 3 Pull upper fuel line off fuel filter neck see Figure 15 or 16 4 Carefully pry bushing fuel filter and lower fuel line 115T 165T models only out of fuel tank see Figure 16 5 Wash fuel filter with clean fuel and replace in tank 6 Attach upper fuel line to fuel filter neck 7 Replace side cover SERVICE PROCEDURES Continued Relief Valve Pressure Gauge Plug Figure 13 Pressure Ga...

Page 10: ... Combustion Chamber Nozzle Adapter Assembly Air Line Hose Photocell Bracket Burner Strap Figure 20 Removing Air and Fuel Line Hoses 115T Model Only Photocell Bracket Burner Strap IGNITOR 1 Remove upper shell and fan guard See Upper Shell Removal page 8 2 Remove fan see page 8 3 Remove 4 side cover screws with a 5 16 nut driver Remove side cover see Figures 15 and 16 4 Disconnect ignitor wires yell...

Page 11: ...ozzle Sleeve Nozzle Face Figure 23 Nozzle and Nozzle Adapter All Models Nozzle Adapter Figure 22 Removing Nozzle Assembly All Models FUEL AND AIR LINE REPLACEMENT AND PROPER ROUTING 1 Remove upper shell see Upper Shell Removal page 8 2 Remove side cover screws using 5 16 nut driver see Figure 15 or 16 page 9 3 Remove side cover 4 Inspect fuel and air line hoses for cracks and or holes If fuel line...

Page 12: ...mp If debris is found blow out with compressed air 8 Install insert and rotor 9 Check gap on rotor Adjust to 003 004 076 101 mm if needed see Figure 27 Note Rotate Rotor one full turn to insure the gap is 003 004 076 101 mm at tightest position Adjust if needed 10 Install blades pump plate air filters and filter end cover 11 Replace fan guard and upper shell see Upper Shell Removal page 8 12 Adjus...

Page 13: ...r Thermostat Photocell Photocell Ignitor Motor Return AC Neutral L2 120V L1 Ignitor Motor Figure 31 Wiring Diagram for 55T 70T 115T 165T Thermostat Models WIRING DIAGRAMS Power Plug 120V 60Hz Blue Blue White White Photocell Green Green Red Black Yellow Yellow Motor Ignitor Ignition Control Assembly Photocell Photocell Ignitor Motor Return AC Neutral L2 120V L1 Ignitor Motor Figure 30 Wiring Diagra...

Page 14: ... 1 14 44 1 67 52 1 97 85 3 00 1 2 4 54 Pump Pressure psi 3 0 3 4 4 7 5 3 5 6 Electric Requirements 120 V 60 HZ Same All Models Amperage Normal Run 2 0 2 0 2 8 3 6 3 6 Motor RPM 1725 1725 3440 3440 3440 Hot Air Output CFM 170 180 360 490 575 Shipping Weight 32 35 35 53 63 Approximate Pounds Heater Weight without Fuel 28 30 30 45 53 Approximate Pounds Use of 2 diesel fuel oil will result in noticeab...

Page 15: ...c 2220 Argentia Road Unit 4 Mississauga Ontario L5N 2K7 Parts Department 1 905 826 8010 HEAVY DUTY WHEELS AND HANDLE KIT HA1202 For heavy duty applications Makes your heater even more portable and convenient Fits 40 55T 70T models THERMOSTAT KIT HA1210 For40model Keepsyourbuildingatthetemperatureyouselectday and night Helps economize on fuel AIR GAUGE KIT HA1180 For all models Special tool to chec...

Page 16: ...8 5 6 7 8 9 10 11 12 13 14 15 16 9 2 9 1 9 3 9 4 9 5 17 18 19 20 21 22 23 24 25 26 27 28 29 30 34 35 36 32 33 31 9 6 37 ILLUSTRATED PARTS BREAKDOWN RC40 Motor and Pump Assembly 12 11 12 18 12 17 12 16 12 15 12 14 12 13 12 12 12 10 12 1 12 3 12 4 12 5 12 6 12 7 12 8 12 9 12 2 ILLUSTRATED PARTS BREAKDOWN RC40 ...

Page 17: ...sure Relief Spring 1 12 12 M22997 Plug 1 12 13 M8940 Steel Ball 1 4 Diameter 1 12 14 M29612 01 Output Filter 1 12 15 M12461 31 Screw 10 32 x 1 6 12 16 103676 01 Nylon Elbow 90 1 12 17 M8643 Blade 4 KEY PART NO NUMBER DESCRIPTION QTY Not available as an assembly Included in Rotor Kit Part No HA3004 Included in Filter Kit Part No HA3014 Included in Pump Adjustment Kit Part No HA3020 12 18 FHPF3 5C S...

Page 18: ...bly 12 11 12 18 12 17 12 16 12 15 12 14 12 13 12 12 12 10 12 1 12 2 12 3 12 4 12 5 12 6 12 7 12 8 12 9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 34 35 36 32 33 31 39 38 37 9 2 9 1 9 3 9 4 9 5 9 6 41 40 ILLUSTRATED PARTS BREAKDOWN RC55T RC70T ILLUSTRATED PARTS BREAKDOWN RC55T RC70T ...

Page 19: ...ter 1 12 14 M29612 01 Output Filter 1 12 15 M12461 32 Screw 10 32 x 1 1 8 55T 6 M12461 31 Screw 10 32 x 1 70T 6 12 16 103676 01 Nylon Elbow 90 1 12 17 M8643 2 Blade 55T 4 M8643 Blade 70T 4 KEY PART NO NUMBER DESCRIPTION QTY Not available as an assembly Included in Filter Kit Part No HA3014 Included in Rotor Kit Part No HA3005 Included in Pump Adjustment Kit Part No HA3020 Included in Rotor Kit Par...

Page 20: ... 27 24 28 29 20 22 21 30 31 17 14 14 33 34 35 36 32 26 13 18 5 4 6 7 8 7 2 7 1 7 5 7 4 7 3 39 38 37 41 45 44 46 42 43 40 42 7 6 ILLUSTRATED PARTS BREAKDOWN RC115T RC165T Motor and Pump Assembly 10 11 10 17 10 16 10 15 10 13 10 14 10 13 10 12 10 10 10 1 10 2 10 4 10 5 10 6 10 7 10 8 10 9 10 3 ILLUSTRATED PARTS BREAKDOWN RC115T RC165T ...

Page 21: ...9 M51345 06 Fuel Line 1 PARTS LIST RC115T RC165T This list contains replaceable parts used in your heater When ordering parts be sure to provide the correct model and serial numbers from the model plate then the part number and description of the desired part See OPTIONAL ACCESSORIES Not available as an assembly KEY PART NO NUMBER DESCRIPTION QTY 20 106896 01 Fuel Filter 1 21 M51151 01 Fuel Line T...

Page 22: ... and any parts thereof to be free from defects in materials and workmanship for one 1 year from the date of first purchase when operated and maintained in accordance with instructions This warranty is extended only to the original retail purchaser when proof of purchase is provided This warranty covers only the cost of parts and labor required to restore the product to proper operating condition T...

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