Service (Continued):
SPARK PLUG:
Clean and re-gap every 600 hours of operation, or
replace as needed. After removing the spark plug,
clean the terminals with a wire brush. Re-gap the
terminals to 0.140" (3.5mm). See Figure 4.
Spark Plug
Burner Head
Figure 4
PHOTOCELL:
The photocell should be cleaned using a cotton swab
dipped in alcohol or water at least once per heating
season, or more depending on conditions. See Figure
5.
Photocell
Wire
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All manuals and user guides at all-guidesbox.com
NEVER LEAVE HEATER UNATTENDED WHILE BURNING OR
WHILE CONNECTED TO A POWER SOURCE
MAINTENANCE (CONT.)
Gap
Ignitor Wire
Photocell
Photocell lens
X
X
Figure 5
PUMP PRESSURE:
While heater is operating, turn adjusting screw
clockwise to increase, counter-clockwise to decrease
pressure. Correct pump pressure is as follows:
Model Number
45-KFA
80T-KFA
140T-KFA
190T-KFA
215T-KFA
Tolerance ± 10%
Pressure Valve
Adjusting Screw
Figure 7
NOZZLES:
Nozzles should be cleaned or replaced at least once
per heating season. Contaminated fuel could make
this necessary immediately. To clean dirt from nozzle,
blow compressed air through nozzle front. It may be
necessary to soak the nozzle in K-1 kerosene to loosen
any dirt particles.
Nozzle Face
9
Kerosene Forced Air Heater User's Manual
Pump Pressure
3.0 PSI (0.21 BAR)
4.2 PSI (0.29 BAR)
6.6 PSI (0.46 BAR)
8.5 PSI (0.59 BAR)
9.0 PSI (0.62 BAR)
Nozzle
Burner Head
Figure 6