Balmar Centerfielder Installation And Operator's Manual

INTRODUCTION

Your Centerfielder provides a centralized
s ource of charging contr o l for twin engine
applications where tw o alternators and tw o
regulators are us ed t o charge a s ingle batt e ry
bank. The Cent e rfield s ens es when only one
engine is running. When the s econd engine is
s tarted, the Cent e rfielder determines which
regulator' s f i eld current is dominant, and directs that f ield current to both alternators . This e ven dis tribution of
field current ens ures that bo t h alternators deliver comparable percentages of their a vailable capacities .
Outputs may vary bas ed on engine rpm' s , com parative alternator s ize, and dis tances fr om dominant regulat o r
to alternators . For bes t performance, regulat o rs us ed s hould be identical.
In addition t o its ability t o equalize regulation t o both alternators , the Cent e rfielder provides the as s urance
that both alternators will continue t o s upply y our batteries with charging am perage, s hould either s tarboar d or
port s ide regulat o rs fail. The Centerfielder is designed for use ONLY with Balmar MC-612 or MC624 regulators.
INS TALLATION
The Centerfielder is remark ably eas y t o ins tall. Y ou will find, included with the Cent erfielder, a collection of
s pade and wire tap connect ors needed f o r ins tallation, as w ell as tw o fus ed 12 ga. replacement wires f or the
regulator wiring harnes s es (s ee s t ep 6). Field wires (12-gauge), gr ound wire (12-gauge) and ignition wires (1 4 -
gauge) are us er s upplied. T o ins tall:
1. Dis connect batt e ries or turn batt e ry s witches t o their " Of f " pos i-
tions .
2. Ins tall the Cent e rfielder on a flat s ur f ace (bulkhead) mid dis tance
between the tw o alternators .
3. Determine the dis tances req uired for wire runs betw een the
Centerfielder and the regulat o r wiring harnes s es as indicat ed on
the wiring illus tration on the re v ers e s ide of this s heet.
4. Connect the s pade t e rminals as s ho wn, and plug appr o priate wires
as illus trat e d in the diagram belo w.
5. Us ing the wire taps included, connect the us er s upplied wires t
the appropriate wires in the por t and s tarboar d s ide wiring har-
nes s es . T aps s hould be locat e d within one inch (1" ) of the regula-
tors .
6. Remove the exis ting red po wer wire from the regulat o r harnes s
and replace with the 12-ga. 1 5-amp fus ed red wire included with
the Centerfielder. Reconnect at the regulat o r and s our ce of batt ery
voltage.
7. Re-connect batteries and s tar t engines . The indicat or LEDs will
light as the Cent e rfielder s elects the dominant regulat or' s f i eld cur-
rent.
Ins tallation and Operator's Manual
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Centerf ielder