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Install Aux. 1 Lamp

The Max Charge MC-612-Dual regulator’s Aux. #1 (#19) terminal pro-

vides the ability to use a visual indicator when the regulator is operating 

under the following conditions: Full field (the alternator is working at 95% 

or greater output) or Small Engine Mode (the regulator is being controlled 

at 50% field output). When a described condition is detected, the regula-

tor sends the Aux. #1 terminal from neutral to ground. To utilize the Aux. 

#1 Lamp function:
1.  Connect a small LED or incandescent lamp (maximum current flow is 

500 mA) to a positive voltage source.

2.  Connect the negative terminal on the lamp to the Aux. #1 terminal on 

the regulator.

Install Dash Lamp

The Max Charge Dash Lamp (#20) terminal provides the ability to acti-

vate a visual or audible indicator when the regulator monitors the follow-

ing conditions: Low system voltage, high system voltage, high alternator temperature and high battery temperature (tem-

perature conditions are only indicated when appropriate temperature sensors are connected). When a described condition 

is detected, the regulator sends the Dash Lamp terminal from neutral to ground. To utilize the Dash Lamp function:
1.  Connect a small LED or incandescent lamp, or an audible (piezo) alert 

(maximum current flow is 500 mA) to a positive voltage source.

2.  Connect the negative terminal on the lamp or audible alert to the Dash 

Lamp terminal on the regulator.

3.  When connected, the lamp should flash at regulator start-up to indi-

cate active status.

Magnetic Reed Switch

Looking much like a small thermometer atop the 

regulator’s circuit board, the magnetic reed switch 

provides a durable, sealed interface that enables 

the user to set basic and advanced regulator pro-

gramming features. Included with the regulator is 

a small screwdriver that doubles as the regulator’s 

programming  tool. A  small  magnet  embedded  in 

the tip of the screwdriver’s handle allows the user to activate the magnetic reed switch. By holding the magnet to the RED 

dot located at the end of the reed switch, the user allows the user to scroll through the regulator’s various program modes 

and individual program selections. 

Initial Pre-Flight Test And Start-Up

When the regulator is properly mounted and the regulator wiring is installed, the MC-612-Dual is ready for pre-flight test-

ing. Before turning on the engine, it is 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 both 

alternators are 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 alternators.
Using your hand-held multi-meter, test the following wiring terminals for voltage:

TEST #1: Engine/Ignition Off

•  Primary RED Power Wire (Terminal #5)  >12V
•  Secondary RED Power Wire (Terminal #4) >12V
•  Positive Voltage Sense Wire (Terminal #12) >12V
•  BROWN Ignition Wire (Terminal #3) 0V
•  Primary BLUE Field Wire (Terminal #2)  0V
•  Secondary BLUE Field Wire (Terminal #1) 0V

TEST #2: Engine/Ignition ON

•  Primary RED Power Wire (Terminal #5)  >12V
•  Secondary RED Power Wire (Terminal #4) >12V
•  Positive Voltage Sense Wire (Terminal #12) >12V
•  BROWN Ignition Wire (Terminal #3) >12V
•  Primary BLUE Field Wire (Terminal #2)  4-12V
•  Secondary BLUE Field Wire (Terminal #1) 4-12V

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Summary of Contents for MAX CHARGE MC-612-DUAL

Page 1: ...ternators are being used to charge the same large battery bank The MC 612 DUAL provides two field output connectors two power input connectors and two system ground connections making it pos sible to...

Page 2: ...rom inverters transmitters and other sources of RF noise convenient access and readability of the display The regulator wiring harness is 54 inches long providing a three to four foot radius for mount...

Page 3: ...BATTERY Temperature Sensor MC TS A Sensor lug connects to negative battery post enabling regula tor to monitor and respond to battery temperature condition USE CARE TO ENSURE POSITIVE AND NEGATIVE WI...

Page 4: ...switch or to the wire in the existing engine wiring loom that delivers switched voltage from the ignition switch In some cases an oil pressure switch may be used to activate the regulator In either ca...

Page 5: ...e 1 4 spade terminal from the terminal 12 pin Crimp the spade terminal to the sense wire and reconnect the spade to the 12 terminal pin Data TX and RX Terminals 13 and 14 Are currently for factory use...

Page 6: ...gramming features Included with the regulator is a small screwdriver that doubles as the regulator s programming tool A small magnet embedded in the tip of the screwdriver s handle allows the user to...

Page 7: ...ds the bulk charge time by an additional six minutes and compares real time to target values This will re occur until all values are met 5 Ramps down to Absorption voltage 6 Absorption Charge Regulato...

Page 8: ...code Indicates temperature setpoint for ambient alternator and battery temperatures Followed by degrees celsius Indicates in millivolts the voltage value used to control voltage compensation for batt...

Page 9: ...AgL Optima OPS as well as a factory default program UFP and a program for systems with voltage sensitive halogen equipment HAL Programming can be accomplished whenever the regulator is activated Syste...

Page 10: ...16 and 17 Programming For Secondary Alternator OR Regulator Temperature Sensor The regulator allows the user to select between the use or a second battery temperature sensor or a second alternator tem...

Page 11: ...ues for that mode will begin to scroll in the opposite direction Continue to HOLD until the desired value is displayed 4 REMOVE the magnet from the RED dot The mode indicator will be displayed again f...

Page 12: ...indicated Field Threshold Bulk To Absorption Controls the criteria the regulator uses to determine how hard the alternator has to be working to stay in calculated bulk charging mode Factory set at 67...

Page 13: ...at s capable of providing a signal to a user supplied and installed audible or visual alert to indicate the following while the regulator is in operation Small Engine Mode is activated Regulator is at...

Page 14: ...tery Sense wire and there is zero or an unexpected voltage reading at the BLUE wire contact our technical support staff at 360 435 6100 or e mail us at balmar balmar net If all voltages at the regulat...

Page 15: ...tery side of the isolator if an isolator is in use Use a SHIELDED alligator clip for post attachment Unintentional contact between the alligator clip and the alternator case could result in damage to...

Page 16: ...eplacement In order to expedite warranty claims more efficiently BALMAR asks that prior to returning a defective product for repair you call their customer service department for a warranty return aut...

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