Master MH-150T-DFV User's Manual And Operating Instructions page 10

Service (Continued):
FAN BLADES:
Blades should be cleaned at least once per
heating season, depending on conditions.
Remove all accumulated dust and dirt with a
damp cloth, taking care not to bend any of the
fan blades. Be sure the blades are dry before
re-starting the heater. For fan assembly removal
see Figure 7.
Siroco Fan
Motor
Figure 7
FUEL FILTER:
The fuel filter should be cleaned at least twice
per heating season. Clean the filter by rinsing
it in clean 1-K Kerosene. Contaminated fuel
could make cleaning the fuel filter necessary
immediately.
NOTE: To remove the filter from models turn
filter 90º counter-clockwise. See Figure 8.
Fuel Line
Fuel Filter
Figure 8
© 2014, Pinnacle Products International, Inc.
NEVER LEAVE HEATER UNATTENDED WHILE BURNING OR
WHILE CONNECTED TO A POWER SOURCE
Maintenance
Set Screw
Motor Shaft
Fan Blade
Fuel Tank
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 9.
Gap (3.5 mm)
Figure 9
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 10.
Photocell Wire
Figure 10
Dual Fusion Forced Air Heater User's Manual
9
Ignitor Wire
Spark Plug
Burner Head
Photocell
Photocell lens
X X