Dayton Operating Instructions and Parts Manual | 3VG79B |
Dayton® Portable
Forced Air Heater
Maintenance (Continued)
Ignitor Screw
|
| Washer |
| Ignitor | Ignitor |
|
| |
Photocell | Element | Nozzle |
| ||
Bracket |
| Adapter |
|
| Bracket |
Combustion Chamber 
Nozzle
Adapter
Bracket
Photocell Bracket 
Air Line
Hose
Nozzle
Adapter
Bracket
Screw
Nozzle/
Adapter
Assembly
Fuel Line
Hose
8.Install insert and rotor.
9.Check gap on rotor. Adjust to
.003"/.004" if needed (See Figure 17).
NOTE: Rotate rotor one full turn to insure the gap is .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 6).
NOTE: If rotor is still binding, proceed as follows.
Blade
Nozzle Adapter
Combustion Bracket Opening
Chamber
Figure 13 - Ignitor Replacement
NOZZLE ASSEMBLY
1.Remove combustion chamber and ignitor by following steps 1 through 7 under Ignitor, page 7.
2.Carefully place the ignitor in a safe location.
3.Remove two nozzle adapter bracket screws (See Figure 14).
4.Place
5.Carefully remove nozzle from nozzle adapter using 5/8" socket wrench (See Figure 15).
6.Blow compressed air through face of nozzle. This will remove any debris in nozzle.
7.Inspect nozzle seal for damage.
8.Replace nozzle into nozzle adapter until nozzle seats. Tighten
9.Attach nozzle adapter bracket to combustion chamber with two screws removed in step 3.
10.Repeat steps 9 through 16 under Ignitor, page 7.
Figure 14 - Removing Air and Fuel Line Hoses
Nozzle Face
Nozzle
Nozzle Adapter
Seal
Nozzle
Nozzle | Air Line |
Adapter | |
Bracket | Fitting Fuel Line |
| Fitting |
Figure 15 - Nozzle and Nozzle Adapter
PUMP ROTOR
(Refer to Figure 16) (Procedure if rotor is binding)
1.Remove upper shell (See page 5).
2.Remove filter end cover screws using 5/16"
3.Remove filter end cover and air filters.
4.Remove pump plate screws using 5/16"
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.
Pump Plate
Air Intake Filter
Filter End Cover
Insert |
Rotor
| Air Output Filter |
| Fan Guard |
Figure 16 - Rotor Location | |
Blade | Gap Adjusting Screw |
| .003"/.004" Gap |
| Measured With |
| Feeler Gauge |
| Rotor |
| Gap Adjusting Screw |
Figure 17 - Gap Adjusting Screw Locations
8
