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How the Positive Ion Control System Works
The PIC system uses an internal circuit that passes
the voltage through the drive train of the Magnum to the
shaft. The shaft contacts the cable by means of a ball
bearing, spring and, lastly, a one direction button head
screw. Care must be taken to ensure contact between
the cable and the screw when replacing the cable. When
using coated cable, 3-4 ft of coating must be striped
when terminating the cable to reel. Take care in ensuring
that the striped portion is in contact with the button head
screw.
The Positive Ion Control system applies a fi xed 0.6
volts on the trolling cable at all times.
Measuring the Natural Electrolysis and PIC Voltage on
Your Boat
A voltmeter with a scale of zero to one volt will mea-
sure the natural electrolysis. Place the ground lead of
the meter on the motor or the battery ground. Place the
positive lead on the stainless steel downrigger cable while
it is in the water. The downrigger must be unplugged. The
voltage you measure on the volt meter is your boat’s natu-
ral electrolysis voltage. Use the same set up to measure
the PIC voltage; just plug in the Magnum and adjust the
PIC voltage desired.
Using Positive Ion Control
Positive Ion Control is very effective when trolling.
The zone of attraction created at the downrigger wire will
attract the fi sh. It is best to use a short drop back between
the downrigger release and the lure. Drop backs of 10 to
20 ft. are typical. A drop back of 50 to 100 ft. will entirely
negate the effects of the PIC circuit.
Maintaining Your Downrigger
Periodically, lightly grease the thrust bearing and
bearing race found behind the clutch knob. Replace
the cable at least every two years.
There are no user serviceable parts internal to the
Magnum. Your warranty will be void if opened by
anyone other than an authorized or factory service
center. For repairs or servicing your downrigger
refer to the Warranty Information section of this
booklet.
Positive Ion Control
Theory
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