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CPX-900 EU
8 – Maintenance & Troubleshooting
Tester Cables
The test cables that come with your analyzer are consumable items. Cables are like tires in that
the more you use them and the harder you drive them, the shorter their useful life. Here are a few
things you can do to protect your test cables from damage and premature wear:
Cleaning Clamps
The grease, dirt, and sulfation that build up on battery terminals are highly corrosive and can
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damage the clamps over time. Before connecting the clamps, ensure accurate test readings
and protect the clamps by cleaning the battery case and terminals using a wire brush and a
mixture of water and baking soda.
Periodically clean the clamps using a mixture of baking soda and water, or a mild hand-soap,
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and a small bristle brush.
To protect the clamps from oil and dirt, clip them to the back of the analyzer as shown.
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Handling Test Cables
Always connect and disconnect the clamps to the battery by opening and closing the clamps.
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Never pull on the test cables to remove the battery clamps. Pulling can damage the Y-junc-
tion, the cables, and the clamps to the extent that the analyzer may produce lower-than-
expected conductance readings or fail completely.
Never carry the analyzer by the cables. Carrying the analyzer or swinging it by the cables puts
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unnecessary strain on the cables and can result in premature failure. Handle the analyzer with
care to get the maximum use from the product.
Storing Test Cables
Never wrap the cables around the analyzer; this puts unnecessary strain on the test cables.
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Because the test cables are the "tires" of the analyzer, they have a certain life expectancy and will
wear out eventually. However, the abuse examples cited above are not covered under warranty. To
ensure the best performance and longest life of the test cables, attach and remove them with care,
and carry the analyzer and cables together.
If an inspection or a change in test results indicate that the test cables need to be replaced, call
Midtronics Customer Service at 1-800-776-1995.
Testing The Cable Set
If the analyzer frequently displays CHECK CLAMP CONNECTION! there may be an intermittent
open circuit along one or both of the battery test cables. You can check the circuit with a simple
test. The test requires an ohmmeter and a wire or paper clip if the ohmmeter probes are too large
to insert into the pin holes. You will also need to a pencil or plastic marker to keep the clamp jaws
apart.
Test Procedure
You are testing the continuity of the following end points:
The positive (RED clamp jaw without teeth and its corresponding pin hole.
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The positive (RED) clamp jaw with teeth and its corresponding pin hole.
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The negative (black) clamp jaw without teeth and its corresponding pin hole.
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The negative (black) clamp jaw with teeth and its corresponding pin hole.
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1.
Grip a pencil with the clamp as shown in the figure Contacts for Clamp Jaws. Do not grip the
metal part of the eraser or any area that may conduct current.
2.
Insert a probe tip into the hole designated "NO TEETH" for the color (BLACK or RED) of the
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8 – Maintenance & Troubleshooting
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