9
Initial Preflight Test And Start-Up
When the regulator is properly mounted and the regulator wiring is installed, the MC-618 is ready for preflight testing. Before
turning on the engine, it’s advisable to check voltages at the following terminal connections to ensure that the wiring is correct.
Test #1 verifies proper voltage values with the regulator turned off. Test #2 verifies the expected voltages with the regulator
turned on.
Note: If the regulator’s BROWN ignition wire is receiving it’s switched source of voltage from an oil pressure switch, it may
be
necessary to start the engine before applying test #2. If the engine must be run to accomplish test #2, be sure that the alternator
is properly cabled on both positive and negative sides to the battery being charged. Failure to do so could result in damage to
the regulator and alternator.
Using your hand-held multi-meter, test the following wiring terminals for voltage:
TEST #1: Engine/Ignition Off
•
Primary RED Power Wire (Terminal #2) >12V
•
Positive Voltage Sense Wire (Terminal #9) >12V
•
BROWN Ignition Wire (Terminal #3) 0V
•
Primary BLUE Field Wire (Terminal #4) 0V
TEST #2: Engine/Ignition ON
•
Primary RED Power Wire (Terminal #2) >12V
•
Positive Voltage Sense Wire (Terminal #9) >12V
•
BROWN Ignition Wire (Terminal #3) >12V
•
Primary BLUE Field Wire (Terminal #4) 4-12V
