Manson Engineering Industrial SBC-8138 User Manual Download Page 4

Before connecting or disconnecting the charging cable, unplug AC cord from the mains. 
First  connect  the  Red  battery  clamp  to  the  battery  Positive  +  Pole.  Then  connect  the  Black  battery  clamp  to  the 
Negative – Pole of the battery. 
Make sure all the connections are secured, double check on the correct polarity. 
Double check again for correct selection of Battery Selection Switch (4) for battery type (default at  GEL) and Charging 
Current Selection Switch (5) for output current setting (default at 100%) 
 
When  install  in  caravans  and  similar  vehicles,  the  connection  to  the  supply  mains  is  to  be  in  accordance  with  national 
wiring rules. 
 
When charging automotive batteries: 
-  The battery terminal not connected to the chassis has to be connected first. The other connection is to be made to the 
 

chassis, remote from the battery and fuel line. The battery charger is then to be connected to the supply mains; 

-  After charging, disconnect the battery charger from the supply mains. Then remove  the chassis connection and then 
 

the battery connection. 

Please  notice  the  tightness  of  the  power  cables  battery  clamps  to  the  load.  If  the  cables  are  not  secured  well 
enough, the total resistance of the connecting cables will increase, resulting in a huge voltage drop between the 
battery charger to the load. 
 

D.  Normal Multi-Stage (IUoU) Charging Operation   

 
The 7-stage IU0U charge algorithm ensures fast, complete and at the same time gentle charging of the lead acid battery. 
 

Charging Profile 

 

 
Stage 1.

  DESULPHATION charge - The pulse charging 

 
If the initial battery voltage is less than 9V, the charger will start Desulphation mode with pulse charge profile. The Bulk 

LED 

  will lit up with slow flashing. 

 

Stage 2.

  SOFT START - The constant current charging 

 
If at the initial bulk charging, the battery voltage is still less than 11V due to deep discharge, the charger will go with soft 

charge. The Bulk LED 

  will lit up with fast flashing. The bulk charge current is reduced to half of the maximum current 

until battery voltage rises over the set limit 11V at which point the charger switches to Bulk charge. 
In  case  the  battery  voltage  cannot  pass  the  voltage  limit  within  2  hours,  the  charger  switches  to  fault  mode  and 
discontinues the charging. 

 
Stage 3.

  BULK CHARGE - The constant current charging 

 
Normally the battery is charged at constant maximum current until it rises to the selected Absorption voltage level. 

The charging voltage changes with the battery voltage. Bulk LED 

  is ON 

If  the  charger  cannot  go  to  Absorption  mode  within  20  hours,  the  charger  will  automatically  goes  to  Float  mode  so  to 
prevent over charge the battery. This is call safety timer 

 
 
 
 
 

Summary of Contents for SBC-8138

Page 1: ...not charge the battery on boats Remove the battery and charge on shore Never attempt to charge a frozen battery Never attempt to charge a damaged battery Wear protective goggles and turn your face awa...

Page 2: ...ensure a durable working life span even in harsh conditions for the charger and the battery There are selections for WET AGM GEL and Calcium Calcium battery types Special evaluation conditioning charg...

Page 3: ...tive or Deep Cycle lead acid batteries Calcium Calcium Sealed type VRLA Lead Acid batteries with Calcium content Automotive or Deep Cycle Power Supply to provide a constant voltage DC power 13 3V to t...

Page 4: ...lting in a huge voltage drop between the battery charger to the load D Normal Multi Stage IUoU Charging Operation The 7 stage IU0U charge algorithm ensures fast complete and at the same time gentle ch...

Page 5: ...ood condition The standby auto new cycle charge per 18 days are designed to keep the battery in good working condition during long period of resting of the caravan or back up battery application E Rec...

Page 6: ...ference temperature of this sensor is 25 C and compensation voltage is 20mV C for SBC 8138 and 40mV C for SBC 8238 the higher the battery temperature the lower the charging voltage When battery temper...

Page 7: ...lect switch in wrong setting Battery capacity too large Ambient temperature too low Battery has damaged cell or battery is too old Wrong set the lower power level Check for loose contact right cable s...

Page 8: ...le Noise Peak to Peak 200mV Efficiency at WET 230VAC 85 Protections Short Circuit Protection Yes Overload Protection Yes Reverse Polarity Protection by Mosfet Yes Over Temperature Protection Yes OVP O...

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