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Dayton Operating Instructions and Parts Manual
6
Dayton Portable
Oil-Fired Heaters
®
3VG79
FAN
IMPORTANT: Remove fan from motor
shaft before removing motor from heater.
The weight of the motor resting on the
fan could damage the fan pitch.
1. Remove upper shell (See Figure 6).
2. Use 1/8" allen wrench to loosen
setscrew which holds fan to motor
shaft.
3. Slip fan off motor shaft.
4. Clean fan using soft cloth moistened
with kerosene or solvent.
7. Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inches-pounds).
8. Replace fan guard and upper shell.
AIR OUTPUT, AIR INTAKE, AND LINT
FILTERS
1. Remove upper shell (See Figure 6).
2. Remove filter end cover screws using
5/16" nut-driver.
3. Remove filter end cover.
4. Replace air output and lint filters.
5. Wash or replace air intake filter (See
Preventative Maintenance Schedule,
page 9).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
PUMP PRESSURE ADJUSTMENT
1. Remove pressure gauge plug from filter
end cover.
2. Install accessory pressure gauge (part
number HA1180).
3. Start heater (See Operation, page 5).
Allow motor to reach full speed.
4. Adjust pressure to 6.0 PSI. Turn relief
valve to right to increase pressure. Turn
valve to left to decrease pressure (See
Figure 10, page 7).
5. Stop heater. Remove pressure gauge.
Replace pressure gauge plug in filter
end cover.
Fan
Setscrew
Motor
Shaft
Motor
Flush
Figure 7 - Fan Cross Section
Figure 8 - Air Output, Air Intake, and Lint
Filters
Fan Guard
Air Intake Filter
Air Output
Filter
Filter End Cover
Lint Filter
Pressure
Gauge Plug
Figure 9 - Pressure Gauge Plug Removal
Relief Valve
Maintenance
Never service
heater while it is
plugged in, operating, or hot. Severe
burns and electrical shock can occur.
UPPER SHELL REMOVAL
1. Remove screws along each side and top
of heater using 5/16" nut-driver. These
screws attach upper and lower shells
together (See Figure 6).
2. Lift upper shell off.
3. Remove fan guard.
Figure 6 - Upper Shell Removal
Upper
Shell
Fan
Guard
Screw
5. Dry fan thoroughly.
6. Replace fan on motor shaft. Place fan
hub flush with end of motor shaft (See
Figure 7).