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PRODUCT FUNCTION
The SBI12-BLD is used in conjunction with a REDARC Maanger30 Battery
Management System in a 12 V negative ground automotive system to protect
the auxiliary battery from excessive discharge. Specifically designed for use
as the load disconnect solenoid controlled by the BMS, the black (earth
wire) should be connected to the load pin of t he BMS. The BMS sets the
turn on and off points through its settings and switches this black wire (earth
when loads should be on, no earth when loads should be off), and there is
additional voltage thresholds monitored by the SBI12-BLD to ensure reliable
solenoid engagement. The Isolator monitors the auxiliary battery and when
WARNING & SAFETY INSTRUCTIONS
Save these instructions — This manual contains important safety
instructions. Do not operate the system unless you have read and understood
this manual. REDARC recommends that the SBI12-BLD referenced in this
manual be installed by a suitably qualified person.
Disclaimer: REDARC accepts no liability for any injury, loss or property
damage which may occur from the improper or unsafe installation or use of
its products.
WARNING: Risk of explosive gases: Working in vicinity of a lead-acid
battery is dangerous. Batteries generate explosive gases during normal
operation. For this reason, it is of utmost importance that you follow the
instructions each time you use the charger.
CAUTION
ƒ NEVER smoke or allow a spark or flame in vicinity of battery or engine. This
may cause the battery to explode.
ƒ Be extra cautious so as to reduce the risk of dropping a metal tool onto a
vehicle battery. Doing so might cause the battery to spark or might short-
circuit the battery or other electrical parts that may cause an explosion.
ƒ Remove personal metal items such as rings, bracelets, necklaces, and
watches when working with a lead-acid battery. A lead-acid battery can
produce a short-circuit current high enough to weld a ring or the like to
metal, causing a severe burn.
ƒ Be extra cautious so as to reduce the risk of dropping a metal tool onto a
vehicle battery. Doing so might cause the battery to spark or might short-
circuit the battery or other electrical parts that may cause an explosion.
ƒ Remove personal metal items such as rings, bracelets, necklaces, and
watches when working with a lead-acid battery. A lead-acid battery can
produce a short-circuit current high enough to weld a ring or the like to
metal, causing a severe burn.
A SPARK NEAR A BATTERY MAY CAUSE THE BATTERY TO EXPLODE.
TO REDUCE THE RISK OF A SPARK NEAR A BATTERY WHEN
CONNECTING THE BATTERY INSTALLED IN A VEHICLE TO THE
ISOLATOR, ALWAYS DO THE FOLLOWING:
ƒ Position DC cords to reduce the risk of damage by the vehicle hood, door,
or moving engine part.
ƒ Stay clear of fan blades, belts, pulleys and other parts that can cause injury
to persons.
ƒ Check polarity of battery posts. The POSITIVE (POS / P / +) battery post
usually has a larger diameter than the NEGATIVE (NEG / N / –) battery post
however you should always check the label on the battery.
ƒ Determine which post of the battery is grounded (connected) to the
chassis. If the negative post is grounded to the chassis (as in most
vehicles), see (1). If the positive the post is grounded to the chassis see (2).
ƒ (1) For a negative-grounded vehicle, connect the POSITIVE (Red) terminals
from the Battery Isolator to the POSITIVE (POS, P, +) ungrounded post of
each battery. Connect the NEGATIVE (Black) lead to a metal part of the
frame or the vehicle chassis, away from the battery. Do not connect the
connect to the carburettor or fuel lines.
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this drops below the Turn OFF voltage, the solenoid will open, disconnecting
the load. The solenoid will close again when the auxiliary battery voltage
reaches the Turn ON Voltage. A delay Time is built into the Unit for each
transition to reduce the chance of chattering.
The voltage must remain at or above the Turn ON Voltage for a Delay Time
ON period before the solenoid closes. Similarly the voltage must remain at or
below the Turn OFF Voltage for a Delay Time OFF period before the solenoid
opens.
ƒ (2) For positive-grounded vehicles, connect the NEGATIVE (Black) lead
from the Battery Isolator to the NEGATIVE (NEG / N / –) ungrounded post of
the battery. Connect the POSITIVE (RED) terminals to the POSITIVE (POS /
P / +) post of each battery. Do not connect the connect to the carburettor,
fuel lines, or sheetmetal body parts. Only the start battery should be
connected to the chassis.
PERSONAL SAFETY PRECAUTIONS:
To assist with the safe working with batteries:
ƒ Consider having someone close by to come to your aid when you are
working with the Battery.
ƒ Have plenty of fresh water and soap nearby in case battery acid contacts
skin, clothing, or eyes.
ƒ Wear complete eye protection and clothing protection. Avoid touching eyes
while working near a battery.
ƒ If battery acid contacts your skin or clothing, remove the affected clothing
and wash the affected area of your skin immediately with soap and water.
If battery acid enters your eye, immediately flood the eye with running cold
water for at least 10 minutes and seek medical assistance immediately.
NOTICE
ƒ Over discharge risk. Ensure that the Turn OFF voltage is suitable for the
specifications provided by the battery manufacturer.
ƒ It is recommended that Start and Auxiliary Batteries be of similar chemical
characteristics when charging via the Smart Start
ƒ The SBI12-BLD will achieve best results when proper battery maintenance
is regularly performed. This includes but is not limited to checking water
and specific gravity levels of the battery. Refer to the battery manufacturers
manual for more details.
ƒ Fuses or Circuit breakers of appropriate rating must be installed to protect
the vehicle system.
ƒ Fuses must be installed as close as possible to the battery.
IMPORTANT! Do NOT make any connections to the control terminals found
on the front of the unit. Connecting to the control terminals on the front of
the SBI may cause damage to the unit and/or equipment connected to it.
Connecting to the control terminals will void the warranty of the unit.
Do NOT connect to the
control terminals.
®
SBI.
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