www.dickinsonmarine.com
~
Form#7.2-248 Issue#2
27
14. The Oil Metering Valve & Fuel Flow
Safety Fuse
A high temperature fuse is incorporated into the oil metering valve. The
adjusting screw on the top of the knob of the oil metering valve is fitted with
a fusible sleeve. This fuse will melt if the valve knob reaches a temperature
of 165 degrees F. This will shut-off the flow of oil into the burner. Under
normal conditions, the valve is at room temperature. If the high fire sleeve
melts it indicates too much heat is by the valve compartment. Overheating of
this kind is due to burning the heater too lean with the flames burning down
in the burner pot and should be rectified before the heater overheats again.
In case of the release of the high temperature fuse, remove the brass nut and
do not move the adjusting screw. Apply heat from a lighter to re-solder the
link back into its original position which was flat on the top. Once back in
place the adjusting screw will not need re-adjusting. Make sure to now burn
the stove correctly with ALL flames above the top of the burner. See the
Operating Tips section of this Manual.
Fuel Adjustment
The height of the valve-adjusting knob will determine the quantity of oil
exiting from the valve outlet. The height is determined by the length of the
metering screw against the fuel ramp on the main casting of the valve.
Remove the anti-vibration set screw (5/64 or 2.5mm Allen key) located in
the center of the brass nut on top of the knob (turn counterclockwise). The
adjusting screw may be (5/64 Allen) or a very small flat head. Adjust 1/8
turn at a time. After finishing the adjustments, return the set screw using
needle nose pliers to hold the adjuster from turning when locking set screw
in place
