LT-12PREG-1
3
Charles Industries, Ltd. All rights reserved. Printed in the United States of America.
INTRODUCING... THE ALTERNATOR REGULATOR
Thank you for purchasing the Alternator Regulator! The Alternator Regulator controls the field current of an alter-
nator so that the output DC voltage will regulate and charge batteries.
Warranty/Registration
Before proceeding, complete and mail back the Warranty Registration card.
Manual Purpose
With your personal safety in mind, this manual lists important safety precautions first, then covers installation,
operation, maintenance, troubleshooting, warranty, and customer service information.
APPLICATION
Alternator Requirements
The alternator must be an externally regulated model with one brush connected to ground and the other brush
fitted with a connection to make the field connection (P-type).
Note:
Alternators not rated for continuous operation at high current and temperature may fail when driven by
the regulator unless current is limited to a safe value.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
. This manual contains important safety and operating instructions
for the Alternator Regulator. Read the entire manual before using this unit. Also read all instructions and
cautions for and on the Alternator Regulator.
Installation Precaution
Boat wiring is a complex task that can cause shock, corrosion and other hazards if not done properly by trained,
experienced personnel. For more information on this subject contact the American Boat and Yacht Council
(ABYC) or see the standards and regulations below:
American Boat and Yacht Council
3069 Solomon’s Island Road
E-8 “Alternating Current (AC)
Edgewater, MD 21037
Electrical Systems on Boats”
Telephone: 410.956.1050
FAX:
410.456.2737
NFPA Standard 302.
National Fire Protection Association
“Pleasure and Commercial Motor Craft”
1 Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9401
Telephone: 800.344.3555
Rules and Regulations for Recreational Boats
Excerpts from the United States Code (USC) and
the Code of Federal Regulations (CFR) (U.S. Coast
Guard Regulations) are available from the Ameri-
can Boat and Yacht Council listed above.
Note:
Installation of the Alternator Regulator must be made in accordance with all applicable standards and reg-
ulations.
Environmental Precaution
The Alternator Regulator is intended for installation inside an engine room or elsewhere inside the boat. Make
sure that the location will not subject the unit to rain, snow, excessive moisture, excessive heat, or corrosive ele-
ments.