Desa Service Procedures, Upper Shell Removal, Fuel Filter, D20N Model, D30N and D44N Models

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D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS

SERVICE

PROCEDURES

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

UPPER SHELL REMOVAL

1.Remove screws and lock washers along each side of heater using 5/16" nut- driver. These screws attach upper and lower shells together.

2.Lift upper shell off.

3.Remove fan guard.

FUEL FILTER

(D20N Model)

1.Remove side cover screws using 5/16" nut-driver.

2.Remove side cover.

3.Pull rubber fuel line off fuel filter neck.

4.Carefully pry bushing and fuel filter out of fuel tank.

5.Wash fuel filter with clean fuel and re- place in tank.

6.Attach rubber fuel line to fuel filter neck.

7.Replace side cover.

Upper Shell

Upper

 

Shell

 

Fan

 

Guard

Fan

Guard

Figure 7 - Upper Shell Removal, D20N

Figure 8 - Upper Shell Removal, D30N

Model

and D44N Models

Fuel Filter

 

Side Cover

Fuel Line

Figure 9 - Fuel Filter Removal, D20N Model

FUEL FILTER

(D30N and D44N Models)

1.Remove side cover screws using 5/16" nut-driver.

2.Remove side cover.

3.Pull upper fuel line off fuel filter neck.

4.Carefully pry bushing, lower fuel line, and fuel filter out of fuel tank.

5.Wash fuel filter with clean fuel and re- place in tank.

6.Attach upper fuel line to fuel filter neck.

7.Replace side cover.

Fuel Filter, Bushing,

and Lower Fuel Line

Upper Fuel

Line

Side Cover

Figure 10 - Fuel Filter Removal, D30N and D44N Models

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105843

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Contents Portable Forced AIR Heaters Safety Information D20N, D30N and D44N Models Portable Forced AIR HeatersProduct Identification Unpacking FuelsTools Needed AssemblyVentilation To Reset Heater Extension Cord Wire Size RequirementsTheory Operation To Start HeaterPreventative Maintenance TroubleshootingStoring TRANSPORTING, or Shipping ScheduleObstruction in nozzle assembly Water in fuel tank Drain and flush fuel tank with cleanON/OFF switch light remains on Filter Photocell and ignition control assemblyService Procedures Upper Shell RemovalFuel Filter D20N ModelDisconnecting Ignitor Wires from Ignition Control Assembly IgnitorPump Pressure Adjustment AIR OUTPUT, AIR INTAKE, and Lint FiltersNozzle Assembly Fuel and AIR Line Replacement Proper RoutingProcedure if Rotor is Binding Pump RotorIgnition Control Assembly Remove Old AssemblyInstalling the New Assembly FAND20N Model Motor and Pump AssemblyIllustrated Parts Breakdown Parts List Number Description QTYD30N Model KEY Part Number Description QTY D44N Model D44N Model Desired partWheels and Handles NTC-3CWiring Diagram SpecificationsAccessories EC Conformity Declaration EC Conformity Declaration105843 Warranty Information

D30N, D44N, D20N specifications

Desa D30N, D20N, and D44N are advanced digital communication devices designed to enhance connectivity and streamline information transfer across various industries. These models exemplify modern technological innovations while addressing the growing demands for efficient communication in an increasingly interconnected world.

The Desa D30N is recognized for its impressive data transmission capabilities, featuring a robust multimedia communication interface that supports seamless integration across multiple platforms. This model employs cutting-edge encoding technologies that ensure high-quality audio and video streaming, making it an ideal choice for enterprises looking to facilitate clear and efficient virtual meetings. The D30N also incorporates advanced encryption protocols to safeguard sensitive information, ensuring secure end-to-end communication.

In contrast, the Desa D20N focuses on versatility and ease of use. This model is designed with a user-friendly interface that allows for quick deployment and intuitive operation. It supports numerous connectivity options, from traditional wired connections to modern wireless protocols, making it suitable for a variety of environments. The D20N is particularly well-suited for small to medium-sized businesses, providing essential communication tools without the need for extensive technological investment. Its compact design also allows it to fit conveniently into any workspace.

The Desa D44N stands out with its high-performance specifications tailored for heavy-duty applications. This model is engineered to deliver exceptional reliability and durability, making it suitable for demanding industrial environments. With enhanced signal processing capabilities, the D44N can handle multiple data streams simultaneously without compromising performance. It also incorporates long-range communication technologies, which enable it to maintain stable connections over considerable distances. This feature is essential for industries that require continuous monitoring and coordination across vast operational landscapes.

All three models—D30N, D20N, and D44N—boast compatibility with various operating systems and software applications, ensuring they can meet the unique needs of different users. Moreover, they are designed with energy efficiency in mind, promoting sustainable practices within organizations.

In summary, the Desa D30N, D20N, and D44N are exemplary digital communication solutions, each optimized for distinct operational requirements. With their unique technologies and characteristics, these devices play a pivotal role in fostering effective communication, enhancing productivity, and supporting ambitious business strategies in the digital age.