EnForcer™ SCR Service Manual I.B. 1561
TABLE OF CONTENTS
AC Line Voltage Letter Codes ............................. 3
Specialty Charger Options List ............................ 3
Important Safety Instructions............................... 4
Installation ......................................................... 5
Location......................................................... 5
Stacking Multiple Chargers ........................... 5
Electrical Connections................................... 5
Connecting Input Power................................ 6
Branch Circuit Protection .............................. 6
Plug Polarity .................................................. 6
Grounding the Charger ................................. 6
Theory of Operation............................................. 7
Introduction.................................................... 7
Printed Circuit Boards ................................... 7
Control Circuitry ............................................ 8
EnForcer™ SCR Features
Front Panel ......................................................... 9
LED ......................................................... 9
Pushbuttons .................................................. 9
Charger Features................................................. 10
General ......................................................... 10
Multiple Battery Select .................................. 10
Auto Start/Delayed Start ............................... 11
Auto Equalize Cycle ...................................... 11
Manual Equalize Cycle.................................. 11
AC Power Fail ............................................... 11
Refresh Cycle................................................ 11
Cool Down..................................................... 11
Parallel Charging (Optional).......................... 11
AC Disconnect (Optional).............................. 12
AC Input Change Quick Tap™ (Optional)..... 12
ES3 CONTROL BOARD
Normal Operation …………………………………..12
User Parameter Configuration ............................. 14
Adjusting Settings ......................................... 14
Adjusting Battery Selection ........................... 14
With Multiple Battery Select Enabled............ 14
With or Without Multiple Battery Select
Enabled................................................... 14
Service Parameter Configuration ........................ 15
Charger Faults ..................................................... 19
Field Calibration…………………………………….20
Recharge Characteristics .................................... 20
Gassing Voltage Point Not Reached ............ 20
Gassing Voltage Point Reached ................... 20
Finish Current Mode Not Reached ............... 20
Finish Current Mode Reached ...................... 20
Equalize Mode .............................................. 20
Refresh Mode................................................ 20
Checking the Recharge Characteristics........ 20
Default Setting ……………………………………...20
TERMINATION METHODS ……………………………21
CHARGE PROFILES …………………………………..22
DATA LOGGING ……………………………………….23
SCR TRANSFORMER TYPE BATTERY CHARGERS
Watchdog Circuits (If installed) ...................................24
Operation of Reset Watchdog
And Override Watchdog ................................24
Override Watchdog ..............................................24
Normal Operation ..........................................24
Fault Indication...............................................24
Fault Conditions .............................................24
Fault Recovery...............................................24
Reset Watchdog...................................................24
Normal Operation ..........................................24
Fault Indication...............................................24
Fault Recovery...............................................25
Testing Components...................................................25
Transformer ...................................................25
SCR/Diode Block ...........................................26
Diode Test......................................................27
AC & DC Fuses..............................................27
Printed Circuit Board......................................27
Snubber Assembly.........................................28
Replacing Components ..............................................28
Introduction ....................................................28
Main Transformer ..........................................28
SCR/Diode Block ...........................................29
Contactor .......................................................29
Control Transformer.......................................30
Printed Circuit Board......................................30
Voltage Conversion .......................................30
AC Input Change (Standard) .........................30
AC Input Change (Quick Tap™)....................32
Maintenance .........................................................33
REPLACEMENT PARTS, SCHEMATICS, ASSEMBLY
DRAWINGS:
ES3: Replacement Parts, Schematics ................34
ES3: Assembly Drawings ....................................43
ES3 Large Cabinet Replacement Parts/Fuse Values,
Schematics ………………………………………….58
ES3 Large Cabinet: Assembly Drawings ............62
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