DieHard 28.71221 Operator'S Manual Download Page 11

 9 

PROBLEM

POSSIBLE CAUSE

REASON/SOLUTION

The charger is making an 

audible clicking sound.

Circuit breaker is cycling.

Battery is defective.

Shorted battery cables or 

clips.

Severely discharged battery, 

but otherwise it is a good 

battery.

Reverse connections at 

battery.

The settings may be wrong. 

Check the charger settings.

Have the battery checked.

Circuit breaker cycles when 

current draw is too high. 

Check for shorted cables or 

clips and replace if necessary.

The battery may not want to 

accept a charge due to a run-

down state. Allow charging to 

continue until battery has a 

chance to recover sufficiently 

to take a charge. If more than 

20 minutes, stop charging and 

have the battery checked.

Shut the charger off and 

correct the lead connections.

Charger makes a noticable 

buzz or hum.

Transformer laminations 

vibrate (buzz).

No problem, this is a normal 

condition.

BEFORE RETURNINg FOR REPAIRS

16. 

When a charging problem arises, make certain that the battery is capable of accepting 

16.1 

a normal charge. Double check all connections, the AC outlet for a full 120 volts, the 

charger clips for correct polarity and the quality of the connections from the cables to the 

clips and from the clips to the battery system. The clips must be clean.
When a battery is very cold, partially charged or sulfated, it will not draw the full rated 

16.2 

amperes from the charger. It is both dangerous and damaging to a battery to force 

higher amperage into it than it can effectively use in recharging.
When an UNKNOWN OPERATING PROBLEM arises, please read this complete 

16.3 

manual and call the customer service number for information that will usually eliminate 

the need for return.

If the above solutions do not eliminate the problem, or for information about troubleshootingor 

replacement parts, call toll-free from anywhere in the U.S.A. 

1-800-732-7764 

7:00 am to 5:00 pm Central Time Monday through Friday

Summary of Contents for 28.71221

Page 1: ...1221 00 99 001008 01 12V Manual Battery Charger Read and follow all Safety Rules and Operating Instructions before Every Use of this Product Save these instructions Sears Brands Management Corporation...

Page 2: ...tes IL 60179 For customer assistance or replacement parts call toll free from 7 am to 5 pm CT Monday through Friday 1 800 732 7764 Table of Contents Section Page IMPORTANT SAFETY INSTRUCTIONS 1 PERSON...

Page 3: ...ces state the hazard Numbered sentences state how to avoid the hazard The icon gives a graphical description of the potential hazard Pursuant to California Proposition 65 this product contains chemica...

Page 4: ...f the battery Review the cautionary markings on these products and on the engine This charger employs parts such as switches and circuit breakers that tend to produce 1 12 arcs and sparks If used in a...

Page 5: ...ose or mouth Add distilled water to each cell until the battery acid reaches the level specified by the 3 4 battery manufacturer Do not overfill For a battery without removable cell caps such as valve...

Page 6: ...cted to the chassis vehicle 6 4 frame If the negative post is grounded to the chassis as in most vehicles see step 6 5 If the positive post is grounded to the chassis see step 6 6 For a negative groun...

Page 7: ...cting 7 7 procedure and break the first connection while as far away from the battery as practical A marine boat battery must be removed and charged on shore To charge it onboard 7 8 requires equipmen...

Page 8: ...activity on the meter although the meter does not have the resolution to display this low rate For the 2 amp charge rate a triangle has been provided Its accuracy has been calibrated for use with sma...

Page 9: ...anking Amps RC Reserve Capacity AH Amp Hour NR means that the charger setting is NOT RECOMMENDED Find your battery s rating on the chart below and note the charge time given for each charger setting T...

Page 10: ...ery is defective will not accept a charge 2 amp charge rate is being used Plug the charger into an AC outlet Check for open fuse or circuit breaker supplying AC outlet Check power cord and extension c...

Page 11: ...normal condition BEFORE RETURNING FOR REPAIRS 16 When a charging problem arises make certain that the battery is capable of accepting 16 1 a normal charge Double check all connections the AC outlet f...

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