Schumacher DY-1420 User Manual

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A. GENERAL BATTERY SAFETY
1. Before you use your battery charger, be sure to read all
instructions and cautions printed on:
 •BatteryCharger
 •Battery
 •Vehicleorunitusingbattery
2. Use battery charger on LEADACID type rechargeable
batteries only, such as used in autos, trucks, tractors,
airplanes, vans, RV's, trolling motors,etc. Charger isnot
intendedtosupplypowertolow-voltageelectricalsystem
otherthaninanautomotiveapplication.
WARNING: Do not use battery charger for charging dry-cell
batteriesthatarecommonlyusedwithhomeappliances.
Thesebatteriesmayburstandcauseinjurytopersonsand
damagetoproperty.
3. Useonlyattachmentsrecommendedorsoldbymanufacturer.
Useofnon-recommendedattachmentsmayresultinre,
electricshock,orinjury.
4. When disconnecting the battery charger, pull by the plug
notbythecord.Pullingonthecordmaycausedamageto
cord or plug.
5. Locate battery power cord so it cannot be stepped on, tripped
over,orsubjectedtodamageorstress.
6. Donotoperatechargerwithdamagedcordorplug.Have
cordreplacedimmediately.
7. Do not operate charger if it has received a sharp blow, been
dropped, orotherwisedamaged inanyway.Takeittoa
qualiedprofessionalforinspectionandrepair.
8. Donotdisassemblecharger.Takeittoaqualiedprofessional
whenserviceorrepairisrequired.Incorrectreassemblymay
resultinelectricshockorre.
9. Toreduceriskofelectricshock,unplugchargerfromoutlet
beforeattemptinganymaintenanceorcleaning.
10. Do not use an extension cord unless absolutely necessary.
Use of an improper extension cord could result in re or
electricshock.Ifanextensioncordmustbeused,makesure
that:
 •Pinsonplugofextensioncordarethesamenumber,size,
and shape as those of the plug on the charger.
 •Extension cord is properly wired and in good electrical
condition.
 •WiresizeislargeenoughforACampereratingofcharger,
asspeciedbelow:
Length of cord (feet): 25 50 100 150
AWG size of cord: 16 12 10 8
(American Wire Gauge)
11. Always charge battery in a well ventilated area.
NEVER operate in a closed-in or restricted area without
adequate ventilation because of risk of explosive gases.
WARNING: Risk of explosive gas.
12. Locate charger as far away from battery as DC charger
cablespermit.
13. Do not expose charger to rain or snow.
14. NEVERchargeafrozenbattery.Ifbatteryuid(electrolyte)
isfrozen,bringintoawarmareatothawbeforecharging.
15. NEVER allow battery acid to drip on charger when reading
specicgravityorllingbattery.
16. NEVER set a battery on top of charger.
17. NEVER place charger directly above battery being charged.
Gasesfrombatterywillcorrodeanddamagecharger.
18. NEVER touch the battery clips together when the charger is
energized.
00-99-000757/0607
Owner's Manual
–Save–
Important Safety Instructions
WARNING:Handlingthecordonthisproductorcordsassociatedwithaccessoriesoldwiththisproduct,mayexposedyoutolead,a
chemicalknowntotheStateofCaliforniatocausecancerandbirthdefectsorotherreproductiveharm.Wash hands after handling.
Read Rules for Safe Operation and Instructions Carefully
Working in the vicinity of a lead-acid battery is dangerous. Batteries generate explosive gases during
normalbatteryoperation.Forthisreason,itisofutmostimportancethateachtimebeforeusingyour
charger,youreadthismanualandfollowtheinstructionsexactly.
Battery
Charger
Model:
DY-1420

Schumacher DY-1420 Specifications

General

Type	Automatic Battery Charger
Battery Voltage	12V
Input Voltage	120V AC
Output Voltage	12V DC
Battery Type	Standard, AGM, Gel
Charging Rate	2A slow charge, 10A fast charge
Cable Length	6 ft

Summary

A. GENERAL BATTERY SAFETY

General Battery Safety Precautions

Covers precautions for using battery chargers with lead-acid batteries, including warnings and safe practices.

B. PERSONAL PRECAUTIONS AND SAFETY

Personal Safety Measures

Details essential personal safety measures and protective gear when working with lead-acid batteries and chargers.

Smoking and Sparks

Prohibition of smoking and sparks near batteries due to explosive gases.

F. OPERATING INSTRUCTIONS: CHARGING BATTERY IN VEHICLE

Connecting Clips and Polarity

Details how to correctly identify and connect charger clips to battery posts and vehicle chassis.

Charging Process and Disconnection

G. OPERATING INSTRUCTIONS: CHARGING BATTERY OUT OF VEHICLE

Battery Connection Procedure

Step-by-step guide for connecting the charger to a battery removed from the vehicle.

Finalizing Charge and Disconnection

I. ENGINE START

Engine Start Procedure

TROUBLESHOOTING