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P6

6

Westward Operating Instructions and Parts Manual

Westward

®

Battery Chargers

Operation (Continued)

OFF

- Shuts off power to charging

portion of charger; does not remove
power from the entire unit.

6V High

- Provides up to 60 amps for 6

volt batteries, 40 amps on 1JYT9A.

12V Low

- Provides a charge of 2 amps

for 12 volt batteries. Good for small
batteries on motorcycles, lawn
equipment, etc. Also used for restoring
sulfated batteries by charging for
extended periods at low rate.

12V Medium

- Provides a maximum

charge of 40 amps (N/A for 1JYT9A) for
charging calcium-style batteries or
others that cannot withstand higher
rates of charge.

12V High

- Provides up to 60 amps, 40

amps on 1JYT9A for 12 volt batteries.

6V & 12V Engine start

- This setting is

used for starting 6V & 12V vehicles.

MODEL 1JYU3A

Refer To Figure 7

6V High & Start

- Provides up to 60

amps for charging and starting 6 volt
batteries.

12V Medium

- Provides a maximum

charge of 40 amps for charging calcium-
style batteries or others that cannot
withstand higher rates of charge.

12V High & Start

- Provides up to 60

amps charging and starting power for
12 volt batteries.

24V High

- Provides up to 30 amps

charging and starting power for 24 volt
batteries.

MODEL 1JYU2A

Your model 1JYU2A battery charger is a
manual to fully automatic charger with
a 2 hour timer (for use in manual
mode), and an infinite amperage
control that allows a selection of any
charge rate up to 60 amps. It has a test
feature that allows you to test for
percent of charge, alternator
performance, and problem conditions
such as sulfated or shorted batteries.
TIMER/MODE SELECTOR
The 1JYU2A TIMER/MODE SELECTOR sets
the charger to manual mode and allows
the selection of any charging time up to
120 minutes. In manual mode (no time
set in), charging is controlled by the
RATE SELECTOR. When the time is up,
the charger will switch to a 15 amp
automatic on/off mode that will start
and stop the charger, as the battery
requires, until the battery is fully
charged. The charger will shut off when
the battery is at full charge. If left
connected, the charger will continue to
monitor the battery and will
automatically begin charging again if
the battery drops below full charge. To
charge a battery in automatic mode,
return the timer to automatic (no time
set into the timer). THE RATE SELECTOR
will no longer be in control of charging.
The automatic charge rate is 15 amps.
Do not charge motorcycle and garden
tractor, etc. batteries in automatic
mode. Charge in manual mode only, 
2 amps maximum.
VOLT SELECTOR
Allows the selection of 6 Volt or 12 Volt
charging. This switch also has a center
OFF position to turn the charger OFF.

GENERAL CHARGING INFO FOR ALL
MODELS

As the battery becomes more fully
charged, the rate of charge tapers
down. Depending on the battery
percent of charge, the amperage that
the charger delivers when starting to
charge will vary. It will usually be less
than the amperage selected unless the
battery is almost fully discharged.
Always make sure that the selection you
make matches the voltage of the
battery being charged.
When charging small 12 volt batteries,
like those used in garden tractors,
snowmobiles, motorcycles, and ATV's,
always select the 12 volt /2 amp setting.
Small batteries like these can be
damaged by higher rates of charge.

ENGINE START FUNCTION

For starting engines, connect the
charger as you normally would, charge
the battery for 5-10 minutes, set
selector to start and then crank the
engine.
When the starter engages, the charger
will deliver starting power to
supplement the battery to start the
vehicle. Do not crank for more than 5
seconds as overheating of the vehicle
starter, cables, and battery charger can
occur. After allowing to cool for 3-4
minutes, cranking can be repeated. The
charger is protected from overheating
by a thermal protector. This is for the
protection of both the charger and the
vehicle. If the thermal protector trips,
wait until the charger resets
automatically (about 3-4 minutes) and
resume cranking.

1JYT9A, 1JYU1A, 1JYU2A and 1JYU3A

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Summary of Contents for 1JYT9A

Page 1: ...k of fire electric shock or injury to persons 4 To reduce risk of damage to electric plug and cord pull by plug rather than cord when disconnecting charger 5 An extension cord should not be used unless absolutely necessary Form 5S4079 Printed in Taiwan 05 10 JL06 Figure 1 Operating Instructions and Parts Manual 1JYT9A 1JYU1A 1JYU2A and 1JYU3A E N G L I S H Primary AC input rated 12 V output Power ...

Page 2: ...ave plenty of fresh water and soap nearby in case battery acid contacts skin clothing or eyes 3 Wear complete eye protection and clothing protection Avoid touching eyes while working near battery 4 If battery acid contacts skin or clothing wash immediately with soap and water If acid enters eye immediately flush eye with running cold water for at least 10 minutes and get medical attention immediat...

Page 3: ...hes with an OFF position to OFF and removing AC cord from electric outlet Never allow clips to touch each other BATTERY CHARGER CONNECTION PRECAUTIONS 1 When hooking up charger attach one clip to battery and the other to a point away from battery see Charging a Battery Installed in Vehicle and Charging a Battery Outside the Vehicle Do not hook up charger until reading the entire manual To reduce e...

Page 4: ...o lighter than the wire gauge of the charger s output cables battery cables and booster cables work well See Figure 4 3 Connect POSITIVE red charger clip to POSITIVE POS P post of battery 4 Position yourself and the free end of the cable installed in Step 2 as FAR away from the battery as possible FACING AWAY FROM THE BATTERY connect the NEGATIVE black charger clip to the free end of the cable 5 W...

Page 5: ...ge rate settings 12V Low 2 Amps 12V Medium 40 Amps 6 or 12V High 60 Amps Percent of charge needed 25 or 25 6 Plug charger supply cord into 120V 60 Hz outlet set charging rate selector for ammeter reading closest to chart column used timer will shut charger OFF when charging cycle is complete CHARGER CONTROLS MODELS 1JYT9A 1JYU1A Refer To Figure 7 The switch on the front of your charger is used to ...

Page 6: ...er as the battery requires until the battery is fully charged The charger will shut off when the battery is at full charge If left connected the charger will continue to monitor the battery and will automatically begin charging again if the battery drops below full charge To charge a battery in automatic mode return the timer to automatic no time set into the timer THE RATE SELECTOR will no longer...

Page 7: ... after 5 10 minutes the needle has not moved unplug the charger and discontinue charging NOTE If the needle drops to zero the internal circuit breaker has tripped and will reset automatically after 3 4 minutes Use a voltmeter and read the voltage of the battery If the voltage is under 11 5 volts the battery is probably defective and should be serviced or replaced If the voltage reads over 11 5 vol...

Page 8: ...tate of charge before attempting this test 3 The three zones of the meter indicate the following OK Charging system is performing properly LOW Loose fan belt or voltage regulator and or alternator faulty HIGH Faulty voltage regulator or wiring harness NOTE This type of repair work is rather specialized It may require additional tests on additional instruments for complete diagnosis IMPORTANT The c...

Page 9: ...N G L I S H Wiring Diagrams Figure 11 Model 1JYT9A Yellow Black Orange Red Blue Ammeter Black Timer Rate Selector Black Fan Rectifier Circuit Breaker Positive Negative Cable Assembly Black Cable Assembly Red Power Cord White Green Black Center Tap Thermal Breaker Transformer Black Black Switch ...

Page 10: ...agrams Continued Figure 12 Model 1JYU1A Yellow Black Orange Red Blue Ammeter Timer Black Test Switch Voltmeter w circuit board Black White Blue Rate Selector Black Fan Rectifier Circuit Breaker Positive Negative Cable Assembly Black Cable Assembly Red Power Cord White Green Black Center Tap Thermal Breaker Transformer Black Black Switch ...

Page 11: ...A Yellow Black Black Red P C B Blue Blue Ammeter Timer Red Brown Violet White Green Test Switch Voltmeter White White Selector Switch Black White Orange Fan Secondary Secondary Lead Lead Rectifier Circuit Breaker Positive Negative Cable Assembly Black Cable Assembly Red Power Cord White Black Green Ground Center Tap Thermal Breaker Transformer Black Black ...

Page 12: ...S H Yellow Black Red Blue Ammeter Timer Black Black Black Voltmeter w circuit board White Rate Selector Fan Rectifier Circuit Breaker Positive Negative Cable Assembly Black Cable Assembly Red Power Cord White Green Black Center Tap Thermal Breaker Transformer Black Switch Wiring Diagrams Continued Figure 14 Model 1JYU3A ...

Page 13: ...tive selector switch Defective timer switch Defective timer switch 1 Plug power cord into outlet 2 Inspect prongs of plug and straighten if necessary Replace outlet receptacle if defective 3 Check supply fuses or circuit breaker If necessary replace or reset 4 Check electrical continuity of cord and plug Replace if defective 5 Inspect all internal electrical connections Reconnect or tighten any th...

Page 14: ...nd Parts Manual Please provide following information Address parts correspondence to Grainger Parts Operations P O Box 3074 1657 Shermer Road Northbrock IL 60065 3074 U S A Model number Serial number if any Part description and number as shown in parts list 1JYT9A 1JYU1A 1JYU2A and 1JYU3A 12 13 10 11 14 19 18 17 15 16 21 20 23 22 1 7 6 5 4 3 2 9 8 E N G L I S H ...

Page 15: ... o n K l o r t n o C 6 1 1 G 6 6 6 2 610 4 2 T T Control Knob Rate Selector 6 1 17 Rotary Switch for 1JYT9A 1JYU1A 1JYU3A TT246408666G 1 1 G 6 6 6 4 0 8 5 6 8 T T y l n O 2A U Y J 1 r o f y l b m e s s A B C P 7 1 1 G 6 6 6 2 7 3 6 4 2 T T y l n O 2A U Y J 1 r o f r e m i T 8 1 1 G 6 6 6 3 7 2 6 4 2 T T 3A U Y J 1 1A U Y J 9A T Y J 1 r o f r e m i T 8 1 1 G 6 6 6 7 3 2 6 4 2 T T 2A U Y J 1 1A U Y ...

Page 16: ... those in neighboring areas While Westward attempts to assure that its products comply with such codes it cannot guarantee compliance and cannot be responsible for how the product is installed or used Before purchase and use of a product review the product applications and all applicable national and local codes and regulations and be sure that the product installation and use will comply with the...

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