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AUTO DETECT

This product includes the exclusive “Auto-detect” feature for the charging of batteries.  With 
this new technology, the power converter will evaluate the charging cycle of a battery, determine 
the type of battery being used, and then choose the appropriate charging program(profile) to 
provide for the best performance and maintenance of that battery. 
Because of the differences of Lead Acid, AGM and Lithium type batteries, a system that  
provides a charge to the battery or batteries must be able to accommodate the different 
charging requirements. With the use of the “Auto-detect” product, the charging requirement 
is able to be “detected” and is then automatically set for the type of battery being used.  For 
standard Lead Acid and AGM batteries, WFCO power converters still use the Three-Stage Smart 
Charging to effectively maximize battery life by monitoring through the different phases of the 
charge cycle.  On the other hand, Lithium batteries will prefer the use of only two stages when 
charging, and therefore the power converter will charge using the WFCO Two-Stage Smart 
Charging system.

LEAD ACID & AGM THREE-STAGE SMART CHARGING 

In order to maximize battery life for lead acid and AGM, it is best to charge batteries 
slowly, keep them topped off with a trickle-charge when the RV is not being used. The 3-Stage 
“smart” charger continuously measures the battery voltage output and regulates the amount of 
charge using three modes of operation; Absorption, Bulk and Float modes. 
All WFCO power converters are automatic three-stage switching power supplies. The converter 
senses which mode it needs to be in by checking the RV system voltage.

ABSORPTION MODE

The converter normally provides a constant target output voltage of 13.6 VDC (nominal) to  
power all the branch circuits. However, it is current limited, and if the output (load) current 
reaches its maximum, the output voltage will drop as necessary to hold the 

converter’s maximum 

output current level (the Amperage rating) without exceeding it. 

Figure 1

DC FUSE BOARD

OPERATIONAL FEATURES

Summary of Contents for WF-9500-AD-MBA Series

Page 1: ...AD MBA WF 9580 AD MBA The Power Center model number is located on the front panel label next to the breakers ARTERRA DISTRIBUTION 877 294 8997 wfcoelectronics com WARRANTY warranty wfcoelectronics com Fax 574 294 8698 Distributed by Arterra in the U S A and Canada ...

Page 2: ... Protection 4 OPERATIONAL FEATURES Auto Detect 5 Three Stage Smart Charging 5 Two Stage Smart Charging 6 TROUBLESHOOTING INSTRUCTIONS Converter Output Voltage 8 Reverse Polarity Fuses 8 Troubleshooting Flow Chart 9 Replacing the MBA 9 GENERAL COMPLIANCE INFORMATION Agency Listings 11 INSTALLATION INSTRUCTIONS Mounting the MBA 11 WARRANTY INFORMATION 12 SPECIFICATIONS 13 TABLE OF CONTENTS ...

Page 3: ... total load increases and decreases fan speed as the load decreases Unlike traditional temperature controlled fans the load controlled fan provides better component cooling by avoiding temperature spikes which can lead to premature component failure OVER TEMPERATURE PROTECTION If the internal temperature of the converter exceeds a critical point it will shut down This protects the unit from excess...

Page 4: ...BATTERY PROTECTION The WF 9500 AD MBA Series Main Board Assembly will charge the 12 volt House battery if installed A battery DOES NOT have to be installed for WF 9500 AD MBA Series Main Board Assembly to operate When a battery is installed two reverse polarity fuses protect the MBA circuitry The fuses are located along the left center edge of the DC fuse board below the VCC lug Refer to Figure 1 ...

Page 5: ...he other hand Lithium batteries will prefer the use of only two stages when charging and therefore the power converter will charge using the WFCO Two Stage Smart Charging system LEAD ACID AGM THREE STAGE SMART CHARGING In order to maximize battery life for lead acid and AGM it is best to charge batteries slowly keep them topped off with a trickle charge when the RV is not being used The 3 Stage sm...

Page 6: ... changed back to 13 6 VDC for Absorption Mode Lights that are powered from the output may change brightness slightly at that time FLOAT MODE The third mode of charging is what is called the float charge This mode is designed to provide a trickle charge to the battery after the system observes no significant variations in current draw over a long period of time When in float mode the voltage will r...

Page 7: ...rent from the converter will decrease If the total amperage draw from the converter reaches a preset point within the one to four hour timer the converter is designed to drop out of bulk mode ABSORPTION MODE This mode is designed with one purpose in mind This purpose is to provide a safe operating voltage for all loads in the RV This is accomplished by reducing from bulk mode the output voltage to...

Page 8: ...battery wire circuit One may have been installed by the RV manufacturer Also check for loose wiring connections CHECKING FOR REVERSE BATTERY HOOKUP REVERSE POLARITY FUSES If there is no DC output coming from the WF 9500 AD MBA Series Main Board Assembly converter section first check the reverse polarity fuses on the fuse board Then visually inspect the fuses for any breaks in the fuse element If n...

Page 9: ...r enclosure will sound This alarm will continue to sound until the AC wires are connected correctly If the above checks have been made but the converter output still reads 0 0 VDC the converter is not functioning properly Contact the Arterra Distribution Power PROs at 1 877 294 8997 Should it be determined that the WF 9500 AD MBA Series Main Board Assembly needs to be replaced removal of the Main ...

Page 10: ...ve the converter black wire from the breaker NOTE This wire has a metal pin that is inserted into the breaker with a pigtail wire added to it If the pigtail wire is connected to another wire disconnect that wire from the pigtail 5 Remove the converter white wire from the neutral bus bar 6 Remove the converter green wire from the ground bus bar 7 In the converter compartment remove the two screws a...

Page 11: ...tes uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense INSTALLATION INSTRUCTIONS Installing the WF 9500...

Page 12: ... arising from the loss of use of the product including but not limited to inconvenience loss of service loss of revenue loss or damage to personal property cost of all services performed in removing or replacing the WFCO product Specifications are subject to change without notice or obligation Any WFCO Electronics products sold through unauthorized Internet sources Example eBay will be excluded fr...

Page 13: ... ASSISTANCE The consumer may contact the selling Dealer or OEM for warranty assistance The consumer may also contact Arterra Distribution exclusive distributor to WFCO Products at 574 294 8997 or Fax 574 294 8698 ...

Page 14: ...ARTERRA DISTRIBUTION 877 294 8997 wfcoelectronics com WARRANTY warranty wfcoelectronics com Fax 574 294 8698 Distributed by Arterra in the U S A and Canada Power PROs Technical Support 877 294 8997 ...

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