TABLE OF CONTENTS
Glossary ....................................................1
Industrial Chargers ....................................1
Testing the Interlock Relay ........................2
Replacing the Charger ...............................2
Lestronic II Charger ...................................3
Test Equipment Required for Troubleshooting ........... 3
Important Notes and Instructions ................................ 3
Operating Instructions and Theory of Operation ....... 4
Internal Wire Diagram ................................................ 4
Troubleshooting, Built-in Charger .............................. 5
Troubleshooting, Portable Charger ............................. 6
Lester X-Series Charger ............................7
Test Equipment Required for Troubleshooting ........... 7
Important Notes and Instructions ................................ 7
Theory of Operation ................................................... 7
Fault and Diagnostic Error Code Table ....................... 8
Internal Wiring Diagram ............................................. 8
Testing the Charging Cycle ......................................... 9
Troubleshooting ......................................................10
SCR Assembly ....................................................10
Transformer ........................................................11
Lock Out Relay...................................................11
Relay Board Assembly .......................................12
Control Board Assembly ....................................13
.....................................................13
Signet HBS Charger ..................................14
.............................................................14
Operating Instructions and Theory of Operation ....... 15
Testing the Charging Cycle ......................................... 16
Status Light Error Code Table .................................... 17
Troubleshooting ......................................................... 18
Signet HB Charger ...................................19
Operating Instructions and Theory of Operation ....... 19
Charge Status Lights ................................................... 19
HB/PT and GEL Indicator Lamps ............................... 20
GEL Lamp ..............................................................20
Testing the Charging Cycle ......................................... 20
Status LED Error Code Table ..................................... 21
Troubleshooting ........................................22
............................................... 22
............................................ 22
Battery Charger
SLA batteries must be charged with a charger configured for SLA
batteries. Use of any other charger will result in damage to the
batteries and premature failure of the batteries.
GLOSSARY
FLA: ----------- “Flooded Lead Acid” A battery using
plates made of lead immersed in an
acid electrolyte. The battery is vented
with removable caps for maintaining the
electrolyte.
Wet: ----------- Same as FLA.
SLA: ----------- “Sealed Lead Acid” is a battery using
plates made of lead immersed in an acid
electrolyte. The battery is sealed and
the electrolyte cannot be maintained.
Sometimes referred to as VRLA “Valve
Regulated Lead Acid.”
GEL: ----------- Type of SLA battery.
AGM: ---------- “Absorbed Glass Mat” is a type of sealed
battery (see SLA).
SCR: ----------
“Silicon Controlled Rectifier” is a type of
semi conductor switch..
AC:------------- “Alternating Current” used when referring
to the charger power source.
DC: ------------ “Direct Current” used when referring to
the charger output voltage.
LED: ----------- “Light Emitting Diode” is a type of lamp.
DMM:---------- “Digital Multi Meter”
VPC:----------- Volts Per Cell = Voltage for each cell in
a battery pack. for example, one 6 volt
battery has 3 cells.
Battery Volts: Voltage at the batteries at the time of test.
INDUSTRIAL CHARGERS
Industrial chargers are typically specified by, or provided
by the end user. For troubleshooting or repair information,
refer to the documentation provided with the charger or
contact the charger manufacturer.
Rev A
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