winter use alcohol fed into air line by means of a cup.
Refer to paragraphs 105 through 107 for maintenance
instructions.
25. Viloco Bell Ringer Operating Valve
a. The valve is designed to control bell ringer
valve through inlet and is metered to bell ringer through
control port. Area through port is governed
Figure 2. Wick setting
d. How to Extinguish.
(1) Turn handwheel to left as far as it will go.
(2) When the flame has gone out raise the
drum by means of lifter handle M leaving
it in the raised position as shown in figure
prevents oil from creeping up on the
combustion tube which would cause an
odor when the burner is again lighted.
e. Care of Wicks and Burners. When the burners
are in long continuous use it is necessary, after ten or
twelve hours of steady burning, to turn the wick up and
down in order to loosen and break away any carbon at
the top of the wick tubes. Otherwise, this carbon will
seal the wick tightly at the top of the tubes and some of
the wick may be broken away, resulting in an
unsatisfactory flame. At least twice a week thoroughly
clean the brass wick tube. Refer to paragraphs 100
through 104 for maintenance instructions.
24. Viloco Internal Bell Ringer
a. Air from control valve enters through hole in
stud (8) and 1/16" orifice in body (1). Pressure moves
piston (2) swinging clapper (4) until exhaust port in
piston is uncovered. Since exhaust port has larger area
than inlet port, pressure in cylinder is instantly
exhausted and clapper rebounds moving piston in
reverse direction. Exhaust port is covered and air
pressure again builds up in cylinder for the next cycle
b. Should ringer fail to operate, it is generally
caused by dirt and gum adhering to piston or in cold
weather by moisture in air line freezing up inlet port.
Use a grade of light oil that will not gum up, and in
Figure 3. Internal bell ringer.
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