Owner`s Manual switch Mode, automatic, lead acid Battery

OWNER'S
MANUAL
Please read this
manual BEFORE
operating your
battery charger
Switch Mode,
Automatic, Lead
Acid Battery
Charger
MODELS:
SEC-1250UL
SEC-2425UL

2 | SAMLEX AMERICA INC.
OWNER'S MANUAL: Battery Chargers | Index
SECTION 1: Important Safety Precautions ...................................... 3
SECTION 2: Description & Features ................................................ 5
SECTION 3: Layout .........................................................................6
SECTION 4: Principle of Operation ................................................. 7
SECTION 5: Protections ................................................................ 14
SECTION 6: Installation ................................................................16
SECTION 7: Preparing the Charger for Operation ........................18
SECTION 8: Operation ................................................................ 25
SECTION 9: Troubleshooting ........................................................ 26
SECTION 10: Internal Fuse Ratings .................................................28
SECTION 12: Specications ............................................................ 28
SECTION 13: Warranty ................................................................... 30
DETAILED INFORMATION
For more detailed information, please view White Paper on our
website:
www.samlexamerica.com/support/white-papers
www.samlexamerica.com/support/application_notes

2 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 3
SECTION 1 | Important Safety Precautions
The following safety symbols will be used in this manual to highlight safety
and information:
WARNING!
Indicates possibility of physical harm to the user in case of non-compliance.
! CAUTION!
Indicates possibility of damage to the equipment in case of non-compliance.
i
INFO
Indicates useful supplemental information.
Hazardous conditions may result if the charger is not installed or operated correctly.
Please read the following instructions to prevent personal injury or damage to the
charger.
BATTERY RELATED
• Toreducetheriskofbatteryexplosion,followtheseinstructionsandthosemarkedon
the battery.
• Neversmokeorallowanopensparkorameinthevicinityofthebatteryorthe
engine.
• ChargeonlyLeadAcidtypeofbatteries(Flooded/AbsorbedGlassMat(AGM)/Gel
Cell).DonotchargeothertypeofbatterieslikeNickelCadmium(NiCad),Nickel-Metal
Hydride(Ni-MH),Dry-Celletc.Othertypesofbatteriesmightburstcausingpersonal
injury.
• Neverchargeafrozenbattery.
• WorkinginthevicinityofLeadAcidbatteriesisdangerous.Batteriesgenerateex-
plosiveHydrogenandOxygengasesduringnormaloperation.Takenecessarysafety
precautions when installing the charger near a battery or in a battery compartment
(Followsafetyinstructionsgivenbythebatterymanufacturer).
• Neverplacethechargerdirectlyaboveorbelowthebatterybeingcharged;gasesor
uidsfromthebatterywillcorrodeanddamagethecharger.Locatethechargerasfar
away from the battery as DC cables permit. Do not install in the same compartment as
batteries.
• Usecautiontoreducetheriskofdroppingametaltoolonthebattery.Itcouldspark
orshortcircuitthebatteryorotherelectricalpartsandcouldcauseanexplosion.

4 | SAMLEX AMERICA INC.
SECTION 1 | Important Safety Precautions
• Removemetalitemslikerings,braceletsandwatcheswhenworkingwithbatteries.
The batteries can produce a short circuit current high enough to weld a ring or the
liketometalandthuscauseasevereburn.
• Ifyouneedtoremoveabattery,alwaysremovethegroundterminalfromthebattery
rst.Makesurethatalltheaccessoriesareoffsothatyoudonotcauseaspark.
CHARGER RELATED
• ThemaximumAhcapacitiesofthebatteriesmustbelimitedasfollows:
- SEC-1250UL: 500Ah
- SEC-2425UL: 300Ah
• Donotoperatethechargerinaclosed-inareaorrestrictventilationinanyway.
Installinawellventilated,cool,dryplace.
• Thechargermustnotbeoperatedinadamporwetenvironment.Whenmounting
inaboat,makesureitisnotsubjectedtobilgewatersplash.
• Donotblocktheventilationopenings/openingsforthecoolingfan.Thereshould
be at least 6 inches clearance all around the unit.
• InstallationandwiringmustcomplywiththelocalandtheNationalElectricalCodes.
It is recommended that installation may be carried out by a certied electrician.
• Wronginstallationonaboatmayleadtocorrosionoftheboat.Itisrecommended
that installation on the boat must be carried out by a boat electrician.
• DisconnecttheACinputpowertothechargerbeforeconnecting/disconnectingthe
batteriesorotherDCloadsorwhenworkingonthecharger.
• DisconnecttheACinputpowerbeforechangingthesettingoftheDipSwitches.
• Thechassisofthechargerisconnectedtotheearthgroundpinofthepowercord
plug.EnsurethattheearthgroundpinofACreceptaclefeedingthechargeris
connected to earth ground.
• Donotuseanadapter.Ifagroundingtypeofreceptacleisnotavailable,donotuse
this charger until proper outlet is installed by a qualied electrician.
• Donotoperatethechargerifthepowercordisdamaged.

4 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 5
SECTION 2 | Description & Features
SEC-1250UL(for12Vbatteries)andSEC-2425UL(for24Vbatteries)arehighcurrent,3
StageChargers(alsocalledIUOU)thatdeliver50Aand25Arespectivelyforalmost75%
to80%ofthechargingcycleensuringaveryfast,safeandcompletechargingofLead
Acidbatteries.Thenomenclature“IUOU”isaDINnomenclatureandsigniesthe3
chargingstages–“I”forBulkChargeStage,“UO”Absorption/Over-chargeStageand
“U”forFloat/MaintenanceStage(underDINspecication,voltageisdesignated“U”
andcurrentisdesignated“I”.Thesubscript“O”in“UO”signiesover-charge).
FEATURES
• State-of-the-artSwitchModeTechnologyforhighefciency,light-weightandquiet
operation.
• UsercongurableACinputvoltage–120VACor230VAC,50/60Hz
• AutomaticoperationforalltypesofLeadAcidBatteries-Flooded,AGMorGelCell
• Userselectable2or3-StageautomaticchargingalgorithmwithtimedAbsorption
Stageandtemperaturecompensationensuresrapid,safeandfullreturnofcapacity
for stand-alone and loaded batteries.
• Abilitytoreducemaximumchargingcurrenttoapproximately1/2oftheratedcapac-
ityduring“HalfPowerMode”.Thisallowssafechargingoflowercapacitybatteries.
• IncludesaBatteryTemperatureSensorallowingtemperaturecompensatedcharging,
if required.
• 2banksofbatteriescanbechargedsimultaneouslywithouttheuseofanexternal
batteryisolator.Thechargingcurrentwillbesharedbetweenthetwobanksdepend-
ing upon the depth of discharge of the connected batteries.
• VoltmeterandAmmeterformonitoring
• Fancooled-fanON/OFF based on output current.
• Protectionsagainstshortcircuit,overcurrent,reversebatteryconnectionand
over-temperature.
• CanbeusedasapowersupplyorasaDCUPS(UninterruptiblePowerSupply)
when used in conjunction with a battery.
• OptionalRemoteLEDPanelModel900-RCwith10Metersofwireforremote
ON/OFFcontrolandindicationofchargingstatus.
• SafetycertiedandlistedtoULStandardUL-1564
• EMIcomplianttoFCCPart15(B),ClassB
MAXIMUM AH CAPACITY OF BATTERY TO BE CHARGED
Ifthechargersareusedtochargeveryhighcapacitybatteries,theywillbeforcedto
supplytheirmaximumratedchargingcurrentforlongertimethanthedesignedlimit
andhence,thecomponentswillbeoverstressedandarelikelytofailprematurely.To
preventprematurefailure,themaximumAhcapacitiesofthebatteriesmustbelimited
as follows:
- SEC-1250UL:500Ah
- SEC-2425UL:300Ah