Desa RJ45 owner manual Nozzle RJ70, Pump Rotor

Page 11

OWNER’S MANUAL

SERVICE

PROCEDURES

Continued

NOZZLE (RJ70)

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

2.Remove fan (see Fan, page 8).

3.Remove fuel and air line hoses from burner head.

4.Remove spark plug wire from spark plug.

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

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

7.Place burner head into vise and lightly tighten.

8.Carefully remove nozzle from burner head using 5/8" socket wrench (see Fig- ure 19).

 

Burner Head

Combustion

Spark

Chamber

Plug

 

Wire

Screw Spark Plug

Fuel Line Hose

Air Line

Hose

Figure 18 - Removing Burner Head

Nozzle Face

Nozzle Seal

Nozzle

Burner Head

Fuel Line

Fitting

Air Line Fitting

Figure 19 - Removing Nozzle

9.Blow compressed air through face of nozzle. This will free any dirt in nozzle area.

10.Inspect nozzle seal for damage.

11.Replace nozzle into burner head and tighten firmly (14,300-19,600 grams/ centimeter).

12.Attach burner head to combustion chamber.

13.Install spark plug in burner head.

14.Attach spark plug wire to spark plug.

15.Connect and route fuel line hose and air line hose to burner head. See Fuel and Air Line Replacement and Proper Routing, page 10.

16.Replace fan (see Fan, page 8).

17.Replace fan guard and upper shell (see Upper Shell Removal, page 8).

PUMP ROTOR

(Procedure if Rotor is Binding)

1.Remove upper shell (see Upper Shell Removal, 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 0.08/0.10 mm if needed (see Figure 21). Note: Rotate rotor one full turn to in- sure the gap is 0.08/0.10 mm at tight- est position. Adjust if needed.

Blade

Pump Plate

Air Intake Filter

Filter End

Cover

Insert

Rotor

 

 

Air Output

 

Filter

OTOR

PFA/P 056

Fan Guard

Figure 20 - Rotor Location

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

11.Replace fan guard and upper shell.

12.Adjust pump pressure (see Pump Pres- sure Adjustment, page 8).

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

13.Perform steps 1 through 6, column 1.

14.Place fine grade sandpaper (600 grit) on flat surface. Sand rotor lightly in “figure 8” motion four times (see Figure 22).

15.Reinstall insert and rotor.

16.Perform steps 10 through 12.

Gap Adjusting Screw

Blade

0.08/0.10 mm

Gap Measured

With Feeler

Gauge

Rotor

Gap Adjusting Screw

Figure 21 - Gap Adjusting Screw Locations

Sandpaper

Figure 22 - Sanding Rotor

104950

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Contents Portable Forced AIR Heater Unpacking Safety InformationRJ45 Product IdentificationVentilation Theory of Operation FuelsStoring TRANSPORTING, or Shipping Preventative Maintenance ScheduleOperation RJ45 TroubleshootingRJ70 FAN Service ProceduresPump Pressure Adjustment Upper Shell RemovalIgnitor RJ45 Fuel FilterNozzle RJ45 Fuel and AIR Line Replacement Proper RoutingSpark Plug RJ70 Pump Rotor Nozzle RJ70Ignition Control Assembly Wiring DiagramsAccessories SpecificationsRJ45 Illustrated Parts BreakdownNumber Description QTY Parts ListRJ70 KEY Part Number Description QTY Warranty and Repair Service

RJ70, RJ45 specifications

Desa RJ45 and RJ70 are two prominent connector types commonly used in networking and telecommunications. They serve as vital components in facilitating communication and data transfer over various networks, playing crucial roles in both home and commercial environments.

The RJ45 connector is perhaps the most recognized of the two, primarily used in Ethernet networks. Its standard design accommodates eight pins, enabling the connection of twisted-pair cables, most notably Category 5e, Category 6, and higher. This widespread acceptance can be attributed to its ability to support high-speed data transfer rates, with contemporary setups allowing speeds up to 10 Gbps over short distances. Key features of the RJ45 connector include its simple plug-and-play functionality, which streamlines installation and enhances user experience.

In comparison, the RJ70 connector is less common but is engineered for specific applications within telecommunications. This connector is designed with four pins, mainly used with telephone systems and low-speed data transmission. The RJ70 is particularly notable for its application in modular voice communication, where it is employed to connect telephones and to facilitate basic data connections.

Both RJ45 and RJ70 utilize differential signaling to enhance performance and reduce interference, which is vital in densely populated electronic environments. Furthermore, the connectors’ compact size aids in efficient space management, an important characteristic in data centers and telecom applications.

The physical structure of these connectors includes a locking mechanism to secure connections firmly, ensuring stability during operation. Additionally, RJ45 connectors typically come in shielded (STP) and unshielded (UTP) variations, offering options for users based on their environmental needs to mitigate electromagnetic interference.

In summary, Desa RJ45 and RJ70 connectors are integral to modern networking technologies. RJ45 connectors dominate Ethernet installations with their high-speed capabilities and versatility, while RJ70 connectors fulfill niche roles in voice communication systems. Understanding the features and technologies behind these connectors is essential for professionals in telecommunications and networking, ensuring optimal setup and performance in diverse applications. The ongoing evolution in networking demands keeps these connector types relevant, adapting to the increasing bandwidth requirements and technological advancements in data communication.