D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS
SERVICE
PROCEDURES
WARNING: Never service heater while it is plugged in, op- erating, or hot. Severe burns and electrical shock can occur.
UPPER SHELL REMOVAL
1.Remove screws and lock washers along each side of heater using 5/16" nut- driver. These screws attach upper and lower shells together.
2.Lift upper shell off.
3.Remove fan guard.
FUEL FILTER
(D20N Model)
1.Remove side cover screws using 5/16"
2.Remove side cover.
3.Pull rubber fuel line off fuel filter neck.
4.Carefully pry bushing and fuel filter out of fuel tank.
5.Wash fuel filter with clean fuel and re- place in tank.
6.Attach rubber fuel line to fuel filter neck.
7.Replace side cover.
Upper Shell | Upper |
| Shell |
| Fan |
| Guard |
Fan
Guard
Figure 7 - Upper Shell Removal, D20N | Figure 8 - Upper Shell Removal, D30N |
Model | and D44N Models |
Fuel Filter |
|
Side Cover
Fuel Line
Figure 9 - Fuel Filter Removal, D20N Model
FUEL FILTER
(D30N and D44N Models)
1.Remove side cover screws using 5/16"
2.Remove side cover.
3.Pull upper fuel line off fuel filter neck.
4.Carefully pry bushing, lower fuel line, and fuel filter out of fuel tank.
5.Wash fuel filter with clean fuel and re- place in tank.
6.Attach upper fuel line to fuel filter neck.
7.Replace side cover.
Fuel Filter, Bushing,
and Lower Fuel Line
Upper Fuel
Line
Side Cover
Figure 10 - Fuel Filter Removal, D30N and D44N Models
8 | 105843 |
