SERVICE PROCEDURES

WARNING: Never service heater while it is plugged in, op- erating or hot. Severe burns and electrical shock can occur. Only aqualifiedservicepersonshould service and repair heater.

UPPER SHELL REMOVAL

1.Remove screws along each side and top of heater using 5/16" nut-driver. These screws attach upper and lower shells together (see Figure 6).

2.Lift upper shell off.

Upper Shell

Figure 6 - Upper Shell Removal,

600,000 Btu/Hr Model

FAN BLADES AND AIR

DEFLECTORS

1.Remove upper shell (see Upper Shell Removal).

2.Clean fan blades and air deflectors with clean, soft cloth moistened with kerosene or solvent (see Figure 7).

3.Dry fan blades and air deflectors thoroughly.

4.Replace upper shell.

Air

 

Deflector

Fan

 

 

Blade

Figure 7 - Fan Blades and Air Deflectors

SPARK PLUG

1.Remove upper shell (see Upper Shell Removal).

2.Remove spark plug wire from spark plug (see Figure 8).

3.Remove spark plug from burner head using 13/16" open-end wrench (see Figure 8).

4.Replace spark plug if damaged or heavily coated with carbon.

5.Clean and regap spark plug electrodes to .075 inch (see Figure 9).

6.Install spark plug in burner head.

7.Attach spark plug wire to spark plug.

8.Replace upper shell.

Burner

Spark Plug

Head

 

 

 

 

 

Spark

 

 

Plug Wire

 

Figure 8 - Spark Plug Removal

.075

inch

Figure 9 - Spark Plug Gap

NOZZLE

1.Remove upper shell (see Upper Shell Removal).

2.Remove fuel line from solenoid valve using 7/16" wrench.

3.Remove spark plug wire from spark plug.

4.Remove spark plug from burner head using 13/16" open-end wrench.

5.Remove five screws using 5/16" nut-driver and remove burner head from combustion chamber.

6.Place burner head into vise and lightly tighten.

7.Carefully remove nozzle from burner head using 5/8" socket wrench (see Figure 10).

Plug

Spark Plug

 

Nozzle

 

Burner

Spark Plug

Head

Wire

Fuel Line

Solenoid Valve

Figure 10 - Replacing Nozzle

10

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110098-01F

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Desa KEROSENE HIGH PRESSURE PORTABLE FORCED AIR HEATERS Service Procedures, Upper Shell Removal, Spark Plug, Nozzle

KEROSENE HIGH PRESSURE PORTABLE FORCED AIR HEATERS specifications

Desa Kerosene High Pressure Portable Forced Air Heaters are engineered to deliver efficient and effective heating solutions for a variety of applications. These heaters stand out for their portability, high heating capacity, and adaptability to different environments, making them ideal for construction sites, warehouses, livestock facilities, and other outdoor settings.

One of the standout features of Desa heaters is their high-pressure design. This technology allows for rapid heating by forcing hot air into the surrounding area at a higher velocity compared to traditional heaters. This means that larger spaces can be heated more quickly and efficiently. With adjustable outlets, users can direct heat where it is needed most, further optimizing energy use and comfort.

These heaters utilize high-quality kerosene fuel, which offers a robust heating output while maintaining a clean burn. Kerosene is widely available and often more cost-effective than other heating fuels. The heaters are designed to efficiently burn kerosene, ensuring minimal emissions and environmental impact. This makes them suitable for both indoor and outdoor use when proper ventilation is provided.

Safety is a primary focus in the design of Desa high-pressure heaters. They are equipped with multiple safety features, including automatic shut-off mechanisms, which activate in the event of overheating or abnormal operation conditions. Additionally, robust construction ensures durability, allowing these heaters to withstand tough working conditions while providing reliable performance over time.

Ease of operation is another key characteristic of Desa heaters. Many models come with user-friendly controls that allow for straightforward adjustments of temperature settings and fan speeds. Portability is enhanced through built-in handles and lightweight designs, allowing users to transport the heaters with ease.

In conclusion, Desa Kerosene High Pressure Portable Forced Air Heaters offer effective heating solutions that combine high performance, safety, and convenience. With their advanced features, durability, and efficiency, they stand as a reliable choice for anyone needing substantial heat output in challenging environments. Whether for commercial, industrial, or agricultural use, these heaters provide an essential service by delivering warmth whenever and wherever it is most required.