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Guardian Battery Charger Series
Installation and Operations Manual
00-02-0615
02-29-08
Section 75
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In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time. The latest version of this manual can be found at www.fwmurphy.com. Warranty - A limited warranty on materials and workmanship is given with this FW Murphy product. A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/support/warranty.htm Please read the following information before installing. BEFORE BEG
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Table of Contents Safety Instructions.................................................................................................................. 1 General Safety Instructions..........................................................................................1 Personal Precautions ...................................................................................................2 Prior to Installation / Commissioning .............................................................
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NOTES
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Safety Instructions This manual contains important safety and operating instructions for Guardian models BCEG- 12-10, BCEG-24-10, and BCEG-24-20. General Safety Instructions For safe and correct use of the unit, follow the steps below. Should you have any problems and the unit does not function as expected, consult the “Troubleshooting Guidelines” section located at the end of these manual. • Visually inspect unit for any signs of damage caused by transport or storage. Do not operate
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Personal Precautions • Someone should be within range of your voice or close enough to come to your aid when you work near a lead-acid battery. • Have plenty of fresh water and soap nearby in case battery acid contacts skin, clothing or eyes. • Wear complete eye protection and clothing protection. Avoid touching eyes while working near batteries. • If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enters eyes, immediately flood eyes with running
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Charger Location and Connection • The charger must be mounted inside. This device is not weather-proof. Free air flow is required from below and out the top of the unit. • Do not operate charger in a closed-in area or restrict ventilation in any way. • Never place charger directly above battery being charged as gases from battery will corrode and damage charger. • Never allow battery acid to drip on charger when reading specific gravity or filling battery. • The battery charger should
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General Product Information Please read the following information before installing. A visual inspection of this product for damage during shipping is recommended before installation. It is your responsibility to ensure that qualified mechanical and electrical technicians install this product. The Guardian charger provides automatic, current limited and voltage controlled charging of vented lead acid batteries. It may be used in a wide range of industrial charging applications, incl
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Current Limiting The Guardian battery charger is current limited and will only output the rated current of the charger. Guardian Current Ratings Model Rating BCEG-12-10 10A BCEG-24-10 10A BCEG-24-20 20A Battery Charged Condition When charged, the battery will only accept a charge to replace the losses within the battery (approximately 1mA per AH of battery). If there is a standing load (the panel controller, etc.) the charger will output the standing load plus the losses to the
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Installation and Mounting Instructions Mounting hole dimensions: Width (between holes) – 6.77” (172mm) Height (between holes) – 10.04” (255mm) Mounting holes 0= 0.2” (6mm) • The charger must be mounted as shown in the figure above. By unscrewing the mounting screws the faces can be opened on their hinges to allow access to the internal connections. • Cable entry is via ½” conduit knock-outs on either side of the unit. These must be carefully removed from the enclosure sides. • A
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Operating Instructions Before operating the battery charger, ensure that the charger is assembled and installed as per the installation instructions. WARNING: DANGER OF INJURY OR DEATH Before connection, disconnection or handling of Guardian battery charger, be sure AC power supplies are off. NOTE: Connection to or disconnection from live wiring can also cause damage to internal components. Terminal Connection Information Output: To battery CAUTION: Observe correct polarity I
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The BCEG-12-10 and BCEG-24-10 models are fitted with a self-resetting polyfuse on the DC output. If reverse polarity or short circuit faults occur, turn off AC power and disconnect the outputs. This will allow the polyfuse to reset. The charger can then be re-connected and switched back on. No replacement of output fuse should be necessary. If fuse fails to reset, the charger should be returned to supplier. BCEG-24-20 models are fitted with an automotive type blade fuse. Ensure cor
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Over Voltage, Under Voltage, and Charge Fail Connection In a de-energized state the COM – N/C contact is alarmed. The relay energizes on power up and changes state to COM – N/O. These contacts are volt-free contacts rated at 1A @ 30VDC. Fuses All Guardian models are fitted with fuses at the required ratings. Before replacing any fuses, ensure charger is off from power supply. Section 75 00-02-0615 02-29-08 - 9 -
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Troubleshooting Section 75 00-02-0615 02-29-08 - 10 -
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Measuring Charging Voltage and Current To check the charger is working, follow these steps then consult the expected conditions listed below. 1. VOLTAGE – Place voltmeter across battery terminals (“V” in diagram). 2. CURRENT – Turn off AC power supply before breaking into the line to measure DC Amps. Break the positive line to the battery and place an ammeter between positive from charger and positive of battery (“A” in diagram). Current Flow from Charger to Battery If voltage at te
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Using Correct Size Battery Charger The battery charger will need to provide both the standing load and minimum charge current. If a charging current of 2 amps is required, and the standing load is 1 amp, then the charger needs to be able to output a total of 3 amps. Refer to genset manual for sizing of battery chargers to generator set. If installing your own chargers, lead acid battery manufacturers recommend the following: • Minimum charge current should be approximately 5% battery A
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NOTE: On this method, providing batteries have been sized correctly for engine and charged correctly, an open terminal voltage of 12.5V or greater should be present. The following table is for Lead Acid batteries with removable vent caps that can have electrolyte or distilled water added to them for routine maintenance. Voltage (DC) on % Charge Specific Gravity a 12V battery 100 1.265 12.8 75 1.225 12.5 50 1.19 12.4 25 1.155 12.0 Discharged 1.12 11.5 NOTE: If the voltage ac
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Specifications Power Supply • Nominal operating voltages – 120V Units • Permissible voltage variation - ± 6% of nominal • Nominal operating frequency – 50/60Hz DC Charge Output • Maximum current ADC – 20 • Nominal voltage VDC – 12 or 24 • Float/boost voltages These are factory preset for specified batteries, typical settings are as follows: Vented lead acid – Float voltage – 12V / 13.6V and 24V / 27.2V Vented lead acid – Boost voltage – 12V / 14.1V and 24V / 28.2V Charge Fail Ou
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MURPHY and the Murphy logo, are registered and/or common law trademarks of Murphy Industries, Inc. This document, including textual matter and illustrations, is copyright protected by Murphy Industries, Inc., with all rights reserved. (c) 2007 Murphy Industries, Inc. Other third party product or trade names referenced herein are the property of their respective owners and are used for identification purposes only. Section 75 00-02-0615 02-29-08 - 15 -
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