manualshive.com logo in svg

Murphy BCEG-12-10, Installation And Operation Manual, Page: 17 / 20

Share
Download
Murphy BCEG-12-10 Installation And Operation Manual Download Page 17

 

Section 75 

 

00-02-0615 

02-29-08 - 

13 -

 

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. 

 

% Charge 

Specific Gravity 

Voltage (DC) on  

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 across the terminals shows around 10.5V, this may 

indicate a shorted cell is present. 

 

 

Summary of Contents for BCEG-12-10

Page 1: ...00 02 0615 02 29 08 Section 75 GuardianBatteryChargerSeries Installation and Operations Manual ...

Page 2: ...rranty may be viewed or printed by going to www fwmurphy com support warranty htm Please read the following information before installing BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT Disconnect all electrical power to the charger Make sure the charger cannot operate during installation Follow all safety warnings of charger and battery manufacturers Read and follow the Safety Instructions s...

Page 3: ...ct Information 4 Installation and Mounting Instructions 6 Operating Instructions 7 Terminal Connection Information 7 Troubleshooting 10 Measuring Charging Voltage and Current 11 Output Voltage 11 Using Correct Size Battery Charger 12 Factors Contributing to Electrolyte Loss 12 Battery Life 12 Specifications 14 Power Supply 14 DC Charge Output 14 Charge Fail Output 14 General 14 ...

Page 4: ...NOTES ...

Page 5: ...rly grounded Check batteries in accordance with manufacturer guidelines Check charger is correct for battery type and voltage Connect unit to batteries observing correct polarity and ensuring a secure and tight connection Switch on unit at electrical supply Do not expose charger to rain or snow Use of an attachment not recommended or sold by the battery charger manufacturer may result in risk of f...

Page 6: ...s 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 Use charger only for charging batteries as marked on the charger Do not use battery charger for charging dry cell batteries that are commonly used with home appliances These batteries may burst and cause injury to persons ...

Page 7: ...de and damage charger Never allow battery acid to drip on charger when reading specific gravity or filling battery The battery charger should be connected to a grounded metal permanent wiring system Connections to battery charger should comply with all local codes and ordinances AC wiring should be run separately from the output of the charger and the alarm wiring Use two runs of 12 gauge or heavi...

Page 8: ...hat the charger maintains a battery voltage at the pre calibrated float level while supplying any additional load current up to the specified maximum Auto Boost Equalizing Operation Auto boost operation provides an increased output voltage when batteries are below a preset point Once the batteries have reached the boost voltage the charger reverts to its float voltage This operation equalizes the ...

Page 9: ... If there is a standing load the panel controller etc the charger will output the standing load plus the losses to the battery If a standing load of 1A is present with 50AH Vented Lead Acid batteries then the charger will supply 1 05 amps A charged battery with open circuit terminals no load connected will always be higher than nominal battery voltage 12 6 on a 12V lead acid battery Dimensions Mod...

Page 10: ...ion section of the chapter on Operating Instructions for details of terminal connections The lower face should be firmly screwed to the charger before use Four screws should be used to mount charger to panel Ensure screws are tightened firmly as not to become loose during normal operation Adequate consideration should be given to ventilation for proper heat dissipation CAUTION When handling charge...

Page 11: ... correct polarity Input AC supply CAUTION Observe correct voltage as stated on unit Alarm Indication Over voltage under voltage and charge fail Boost Boost initiate Linking these two connectors will force the charger into a single boost cycle of operation Once the charger has completed a single boost cycle the charger returns to its normal mode of operation Stripped wire is introduced just before ...

Page 12: ...ore connection is made to charging unit Ensure unit is properly grounded to the charger s metal chassis CAUTION Ensure correct AC voltage is supplied to unit Applying 240VAC on a 120VAC unit will destroy it and could cause serious personal injury Connection to Batteries Ensure power supply is off before connecting charger to batteries Ensure battery type and voltage are correct before connecting t...

Page 13: ...rgized 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 ...

Page 14: ...Section 75 00 02 0615 02 29 08 10 Troubleshooting ...

Page 15: ...ry voltage then the maximum rated charger current should be present NOTE Once battery is fully charged output current should be between 0 1 and 0 5 of batteries AH capacity plus any standing loads Voltage Rise at Battery Terminals A gradual rise of voltage should be seen showing as float voltage is reached batteries should not be boost charged continuously NOTE If the battery voltage increases rap...

Page 16: ... fully charged state Factors Contributing to Electrolyte Loss Physical damage to cells can cause electrolyte to leak or evaporate High charging voltages will evaporate electrolyte Check charging voltage against battery type and voltage WARNING If the batteries are being used at above 20 Celsius the chargers output voltage should be temperature compensated at 3mV F Cell Battery Life Two possible me...

Page 17: ...sent 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 Charge Specific Gravity Voltage DC on 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 across the terminals shows around 10 5V this may indicate a shorted cell is present ...

Page 18: ...at voltage 12V 13 6V and 24V 27 2V Vented lead acid Boost voltage 12V 14 1V and 24V 28 2V Charge Fail Output Relay type volt free SPDT contacts relay de energized on fault Contact rating 1A 30VDC resistive load General Transformer Single phase 50 60 Hz Class 155 F Operating temperature 14 F to 131 F 10 C to 55 C Wall mounted enclosure models BCEG 12 10 BCEG 24 10 dimensions 10 9 278mm W x 4 7 120m...

Page 19: ...ustries 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 ...

Page 20: ......

Reviews:

No comments