Desa D20N, D44N, D30N owner manual Pump Rotor, Procedure if Rotor is Binding

Page 12

D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS

SERVICE

PROCEDURES

Continued

PUMP ROTOR

(Procedure if Rotor is Binding)

1.Remove upper shell (see page 8).

2.Remove filter end cover screws using 5/16" nut-driver.

3.Remove filter end cover and air filters.

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

5.Remove pump plate.

6.Remove rotor, insert, and blades.

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

8.Install insert and rotor.

9.Check gap on rotor. Adjust to .076/.101 mm (.003"/.004") if needed (see Fig- ure 25).

Note: Rotate rotor one full turn to ensure the gap is .076/.101 mm (.003"/.004") at tightest position. Adjust if needed.

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

11.Replace fan guard and upper shell.

12.Adjust pump pressure (see page 10).

Note: If rotor is still binding, proceed as follows.

13.Perform steps 1 through 6 above.

14.Place fine grade sandpaper (600 grit) on flat surface. Sand rotor lightly in “figure 8” motion four times (see Fig- ure 26).

15.Reinstall insert and rotor.

16.Perform steps 10 through 12 above.

BladeAir

Pump Intake

Plate Filter

Filter End

Cover

Fan Guard

Insert

Rotor

Air Output

Filter

Figure 23 - Rotor Location, D20N Model

Blade Pump

Plate

Air Intake Filter

Filter End

Cover

Fan Guard

Insert

Rotor

Air Output

Filter

Figure 24 - Rotor Location, D30N and D44N Models

Gap Adjusting

Screw

Blade

.076/.101 mm (.003"/.004") Gap

Measured With Feeler Gauge

Rotor Sandpaper

Gap Adjusting

Screw

Figure 25 - Gap Adjusting Screw Locations

Figure 26 - Sanding Rotor

12

105843

Page 11 Page 13
Image 12
Page 11 Page 13
Contents Portable Forced AIR Heaters Safety Information D20N, D30N and D44N Models Portable Forced AIR HeatersProduct Identification Unpacking FuelsAssembly VentilationTools Needed 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 FANMotor and Pump Assembly Illustrated Parts BreakdownD20N Model Parts List Number Description QTYD30N Model KEY Part Number Description QTY D44N Model D44N Model Desired partWheels and Handles NTC-3CSpecifications AccessoriesWiring Diagram 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.
Top Page Image Contents