115,000 Btu/Hr H.S.I. Series
PORTABLE FORCED AIR HEATER
SERVICE
PROCEDURES
Continued
PUMP ROTOR
(Procedure if Rotor is Binding)
1. | Remove upper shell (see page 7). |
2. | Remove filter end cover screws using |
| 5/16" |
3. | Remove filter end cover and air filters |
| (see Figure 16). |
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 17). |
| 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 page 7). |
| Note: If rotor is still binding, proceed |
| as follows. |
13. | Perform steps 1 through 6 above. |
Blade
Pump Plate
Air Intake Filter
Filter End
Cover
Insert
Rotor
Air Output
Filter
Fan Guard
Figure 16 - Rotor Location
Gap Adjusting Screw
Blade
.003"/.004" Gap Measured With Feeler Gauge
Rotor
Gap Adjusting Screw
IGNITION CONTROL
ASSEMBLY
(Procedure for Replacing Fuse)
WARNING: High Voltage
1.Unplug heater.
2.Remove side cover screws (4) using 5/16"
3.Remove fuse cover (see Figure 19).
4.Remove fuse from fuse clips.
5.Replace fuse with fuse of the same type and rating
6.Replace fuse cover.
7.Replace side cover.
Fuse | Fuse | |
Clips | ||
Cover | ||
| ||
| Fuse |
Figure 19 - Replacing Fuse
Figure 17 - Gap Adjusting Screw Locations
14. | Place fine grade sandpaper (600 grit) |
|
| on flat surface. Sand rotor lightly in |
|
| “figure 8” motion four times (see Fig- | Sandpaper |
| ure 18). | |
15. | Reinstall insert and rotor. |
|
16. | Perform steps 10 through 12 above. |
|
Figure 18 - Sanding Rotor
10 | 104193 |
