60,000 Btu/Hr H.S.I. Series
PORTABLE FORCED AIR HEATER
SERVICE
PROCEDURES
Continued
NOZZLE ASSEMBLY
1. | Remove upper shell (see page 6). |
2. | Remove fan (see page 6). |
3. | Remove fuel and air line hoses from |
|
| Nozzle Face | |
Combustion |
| Nozzle Seal | |
Chamber | Nozzle/Adapter | ||
| |||
| Assembly |
| |
|
| Nozzle | |
|
| Nozzle Adapter |
| nozzle assembly (see Figure 11). |
4. | Turn nozzle assembly 1/4 turn to left |
| and pull toward motor to remove (see |
| Figure 12). |
5. | Place plastic |
| lightly tighten. |
6. | Carefully remove nozzle from the |
| nozzle adapter using 5/8" socket |
| wrench (see Figure 13). |
7. | Blow compressed air through face of |
| nozzle. This will free any dirt in |
| nozzle area. |
8. | Inspect nozzle seal for damage. |
9. | Replace nozzle into nozzle adapter un- |
| til nozzle seats. Tighten 1/3 turn more |
| using 5/8" socket wrench |
| pounds). |
10. | Attach nozzle assembly to burner strap. |
11. | Attach and route fuel and airline hoses |
| to nozzle assembly as shown (see Fig- |
| ure 11). Route photo cell wires as |
| shown in Figure 11. |
12. | Replace fan (see page 6). |
13. | Replace fan guard and upper shell. |
Combustion
Chamber
Burner
Strap
Nozzle/
Adapter
Assembly
Air Line Hose | Photocell |
Wires | |
| Fuel Line Hose |
Figure 11 - Removing Air and Fuel Line Hoses
Figure 12 - Removing Nozzle/Adapter Assembly
PUMP ROTOR
(Procedure if Rotor is Binding)
1.Remove upper shell (see page 6).
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.
8.Install insert and rotor.
9.Check gap on rotor. Adjust to .003"/.004" if needed (see Figure 15).
Note: Rotate rotor one full turn to in- sure 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 Pump Pres- sure Adjustment, page 6).
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 Figure 16).
15.Reinstall insert and rotor.
16.Perform steps 10 through 12 above.
Air Line Fitting
Fuel Line Fitting
Figure 13 - Nozzle and Nozzle Adapter
Blade
Pump Plate
Air Intake Filter
Filter End
Cover
Insert
Rotor
Air Output
Filter
Fan Guard
Figure 14 - Rotor Location
Blade | Gap Adjusting Screw |
.003"/.004"
Gap
Measured
With
Feeler
Gauge
Rotor
Gap Adjusting Screw
Figure 15 - Gap Adjusting Screw Locations
Sandpaper
Figure 16 - Sanding Rotor
8 | 104672 |
