Schumacher SF-520MA manual

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Table of contents for the manual

  • Page 1

    1 1. Before you use your battery charger , be sure to read all instructions and cautions printed on: • Battery Charger • Battery • V ehicle or unit using battery 2. Use battery charger on LEAD ACID type rechargeable batteries only , such as used in autos, trucks, tractors, airplanes, vans, RV's, trolling motors, etc. Charger is not inten[...]

  • Page 2

    2 1. Make sure you have a 6 or 12 volt lead-acid battery . Check car owner manual to make sure. 2. Clean battery terminals. T ake care to keep corrosion from coming in contact with your eyes. 3. If required, add distilled water in each cell until battery acid reaches levels specified by battery manufacturer . This helps purge excessive gas from cel[...]

  • Page 3

    3 12 VOL T 2 AMP 12 VOL T 15 AM P OFF 6 VOL T 125 VOL T ENGINE ST ART 6 VOL T 15 AM P MANUAL 12 VOL T 125 AM P ENGINE ST ART OFF: This position disconnect s AC power supplied by your out- let from the rest of the charger . 6 VOL T 15 AMP: Used for charging medium and large size 6 volt batteries, typical application are for crank starting of farm eq[...]

  • Page 4

    4 OPERA TION – Model SF-1275-A T wo switches permit Battery T ype and Charge Rate selection. Switch #1 permits selection of either Conventional or Mainte- nance Free and Deep Cycle batteries. If you are not sure of your battery type, use the (Regular) Conventional Setting. Switch #2 (3 Charge Rate Modes) Mode 1 -- Select the 2 amp automatic setti[...]

  • Page 5

    5 FIGURE 7 CONNECTION TO NEGA TIVE GROUNDED BA TTERY POWER ON FULL CHARGE CHARGE % 100 75 50 25 0 APPROACHES FULL CHARGE Charge current to the battery is typically 5 amps. The needle points toward the 100% mark. FULL Y DISCHARGED BA TTER Y Initial charge current to the battery is typically 10 amps. The needle point s toward the 25% mark. (SF-520MA [...]

  • Page 6

    6 1. These battery chargers are equipped with a self-resetting circuit breaker . This device protects the charger from temporary overloads. In the event of an overload, the circuit breaker will trip open, and after a short cooling off period will reset automatically . this process is known as cycling and can be recognized by an audible clicking sou[...]

  • Page 7

    7 S tore battery charger in a dry area. The approximate required time to bring a battery to full charge state depends upon the number of ampere-hours (AH) depleted from the battery . AH’s are determined by multiplying the num- ber of hours by the number of AMPS supplied to a load. For example - If a load was connected to a battery , which drew 7 [...]

  • Page 8

    8 The battery charger is designed to work automatically . However , If a problem does occur , check the following: PROBLEM POSSIBLE CAUSE SOLUTION No meter reading. Connections are reversed. With charger unplugged, reverse clips and reconnect (rock back and forth to bite in). Poor electrical connection. Clean clips and battery posts and reconnect ([...]