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Before our Dedication of the Johnstown Gamewell system in
November 15 1997, Our alarm technician was laying out plans
for a well operating display. With box circuits, primary
and secondary alarm circuits. As well as trip lights police
boxes, the works.
Richard started this career with in the city's electrical
bureau in the alarm division in 1974. He was only employees there that has alarm experience
when he retired on August 11, 2012.
Now retired from City of
Harrisburg Pennsylvania Served in the public works for 38
years, and the last one who worked on the Gamewell system
that was removed in 1990.
On August 11, 2012 The call sign
Electric One was used for the last time, as Richard called
Fire Headquarters and signed off. A fitting tribute
was read by the dispatcher.
Gamewell Fire Box
wiring for home use
Richard E. Lenker
I tested three power supplies #1-12 Volt
DC 2 Amp, #2 -9 Volt DC. Plug in wall
adaptor at 500 Ma. and #3- 9 Volt DC. Plug in wall
adaptor at 300 Ma.
The optimum current is to be closest to
100 MA of DC current .The fire box has two sets of coils in them one
the clapper bell 16.1 Ohm’s .The outer is the main clock
coil 16.1 Ohm together they equal 32.2 Ohms.
# 1
Using a hot 12 Volts DC power supply
showing 13 Volts and a 100
Ohm resister ( Brown Black Brown ) in series with the fire
box I got the following results. 113.7 MA.
# 2
Using a 9 Volts DC 500 Ma power supply and a 100
Ohm resister ( Brown Black Brown ) in series with the fire
box I got the following results. 108.7 MA.
#3
Using a 9 Volts DC 300 Ma Radio Shack
273-314 power supply and a 68
Ohm resister ( Blue White Brown ) in series with the fire
box I got the following results. 94.7 MA. Just making
it.
The power supply:
When the power is applied and all the doors are open things
will work just fine. Leaving the power on and closing the
interior door will change things. In the first paragraph I
talked about resistance of the two coils equaling 32 Ohms
when the interior door is shut the clapper bell is removed
from the circuit changing the resistance back to 16.1ohms
for the total circuit. To regulate the current
insert a
12volt GE 53 auto bulb in the circuit to limit the current.
Ask for part number #272-1117 , with a base #272-355.
As always, I recommend a 1/4 amp fuse if you can find them,
or a 1/2 amp if that's all you can get This will protect
your investment..
The circuit is a series circuit, one side of power to one
side of the fire box. The center connection of the fire box
is left blank (unused) The other side of power goes to
the resister and through GE 52 bulb and fuse and to the other side of the fire box.
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