IMPORTANT SAFETY INSTRUCTIONS | P12 |
7521 AND 7522 BATTERY CHARGERS |
READ AND SAVE THESE INSTRUCTIONS
WARNING 
Refers to a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION 
Refers to a potentially hazardous situation which, if not avoided, may result in injury.
WARNING 
The P12 Battery Charger should be installed by a qualified marine electrician. Improper installation can result in electrical shock which may cause serious injury or death. To reduce the risk of electrical shock, mount vertically in a dry, well ventilated location. Charge these battery types: Flooded, AGM, Gel, or TPPL Lead Acid batteries. Must consult battery manufacturer specifications for other battery types to
avoid damage.
CAUTION 
Before beginning electrical installation, read the instruction manual. Disconnect all AC and DC power sources. Do not make final connections to the batteries until DC connections on the charger are made and verified. Do not make or break electrical connections to batteries while charging or for up to 30 minutes after charging. Other than parts accessed under the termination cover, there are no user serviceable parts within the battery charger enclosure. Contact Blue Sea Systems for servicing.
GROUNDING PRECAUTIONS 
Marine battery chargers and inverters have two grounding connections, one from the AC system and one from the DC system. ABYC requires the AC grounding system to be connected to the DC grounding system through the distribution systems. Additionally, the chargers make connections to both systems. It is very important the systems be connected properly before the charger is installed. Otherwise the charger grounding system may become the sole connection between AC and DC ground and it may not be sized large enough to provide system wide safety function. The AC grounding conductor is the conductor with green, or green with yellow stripe included in the AC power cable and should be sized the same as the power and neutral conductors (see Table C page 5 for AC wire color). This will connect to the right most terminal in the AC connection block. There is also chassis connection terminal for a DC safety grounding wire. The DC safety ground should be green or marked green and sized equal to, or one wire size smaller, than the DC charge wires.
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| Warnings |
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| Display |
| M4 x 10 |
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Line | Neutral | Ground | AGC® 10A AC Fuse | − NEG | + POS | + POS | + POS |
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| DC Safety Ground | Battery Bus | Battery 1 | Battery 2 | Battery 3 |
| AC Input |
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| DC Output |
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Max.Torque 20 |
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| Max.Torque 75 |
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| M3 x 25mm |
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| SAFETY | M3 x 30mm |
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| GROUND |
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| Terminations |
Specifications
Serial
Number
Serial No. xxxxxxxxxxx |
2Specifications are subject to change. See bluesea.com/P12 for current information.