Alpha Pro charge regulator – User and Installation Manual
4 INSTALLATION
During installation and commissioning of the Alpha Pro charge regulator, the Safety Guidelines & Measures are
applicable at all times. See section 1 of this manual.
4.1 UNPACKING
The Alpha Pro charge regulator ships with the following items:
• Wiring loom for Mastervolt alternators
• Battery temperature sensor
• MasterBus terminator
• User manual
After unpacking, check the contents for possible damage. Do not use the product if it is damaged. If in doubt, contact
your Mastervolt dealer.
4.2 WIRING INSTRUCTIONS
4.2.1 General
WARNING!
Let installation work be done by a licensed electrician. Before beginning with the connection of the
wiring, make the DC distribution voltage free and ensure that the engine is off.
CAUTION!
Short circuiting or reversing polarity may lead to serious damage to the batteries, the alternator, the
Alpha Pro charge regulator, the cabling and/or the terminal connections. Fuses cannot prevent
damage caused by reversed polarity. The damage as a result of reverse polarity is not covered by the
warranty.
CAUTION!
Too-thin cables and/or loose connections can cause dangerous overheating of the cables and/or
terminals. Therefore, tighten all connections well, in order to limit transition resistance as far as
possible. Use cables of the correct size. See specifications (Chapter 9) for recommended wire sizes
and torque values.
• Use the supplied wiring loom for connection of the Alpha Pro charge regulator.
• DC Cables to connect the battery to the alternator are not included in the delivery.
• The Alpha alternator wiring is electrically isolated from ground.
• A DC-fuse must be integrated in the positive cable between the battery and the alternator (see section 9 for
specifications). Do not install the DC-fuse of the DC-distribution before the entire installation is completed.
• The two-pole connector of the wiring loom goes into the field connector of the alternator. Take adequate
measures to ensure a strain relief for this connector.
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