User manual THOMSON BCM 1220

[. . . ] from the battery and charger during recommended that all electrical loads be disconnected adjustment procedures. Always isolate the charger from the supply and the battery before making any electrical connections or adjustments. All servicing procedures should be Dangerous undertaken by a qualified technician only. injury or death. voltages are present within the charger which may cause 2. FLOAT & EQUALIZE MODES NOTE: If the charger is equipped with an APB 1210 alarm/control module, please refer to section 6. [. . . ] Switch the charger to the "equalize" mode with switch. Wait until the battery voltage stabilizes. (The output current should be almost zero, unless a load is also connected to the battery. If the voltage is incorrect, adjust equalize potentiometer located on the printed circuit card. Turn the adjusting screw clockwise to increase voltage, and counterclockwise to reduce voltage. Adjust in small increments, allowing voltage to stabilize after each adjustment. When properly set, return the switch to "float". "CURRENT LIMIT" ADJUSTMENT NOTE: The "current limit" potentiometer is located on the printed circuit card. It is factory set at 100% of the nameplate rating. Do not exceed this setting or damage to the charger may result. During any testing or adjustment of the charger, observe the charging current. In the event that the current exceeds the nameplate rating, current limit adjustment is required before further operation. It is necessary to connect the charger to a lower than nominal voltage load. This may be accomplished by either: Cranking the engine, preferably with the engine disabled to prevent it from cranking, or; Connecting the charger to a partial battery (if inter-cell jumpers are exposed) or one of a lower voltage (eg. If the current is within 10% of the nameplate rating, adjustment is not required. To adjust current limit, turn the potentiometer on the printed circuit board (clockwise to decrease). Do not energize the AC supply, except momentarily, until you are sure the current limit is not set too high. 4. DISCONNECTING THE BATTERY (e. g. For Engine Servicing) Always turn off the AC supply before disconnecting the battery. This will prevent sparks, and will ensure that electrical circuits are not fed by the charger alone, which could cause damage. PM004 Rev 2 00/09/21 3 Thomson Technlogy BCM 1220 BATTERY CHARGER 5. CONNECTIONS CAUTION! Before energizing battery charger AC supply, verify correct AC supply voltage as indicated on the unit rating plate. CAUTION! Before connecting live battery to the battery charger, verify DC voltage output as indicated on the unit rating plate and correct polarity. Note: Reverse polarity will result in zero output from battery charger. NOTES: 1. Recommended Wire Size (AWG): Output Up to 10 ft. 5A 14 12 10A 12 10 15A 10 8 20A 10 8 BCM 1220 TERMINAL STRIP 1 2 3 4 5 6 7 8 FACTORY USE ONLY LINE 2 - NEUTRAL 2. [. . . ] (Equalize timer running light) illuminates. Equalize mode may also be optionally initiated by the following, as indicated by the labeling on the APB faceplate: 6. 3. 2. 1. Automatic Period Timer Factory set for once every 28 days unless otherwise specified. Battery Voltage Dip Factory set at 75% of nominal battery voltage. [. . . ]