Contaminant Controls – System Clean Up with Filter-Driers

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Contaminant Controls – System Clean Up with Filter-Driers

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1. True or False: Catch-All filter driers should be installed on the discharge line.

True False

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2. Which of the following substances does NOT lead to system failure?

Moisture Varnish Acid All of the above substances may lead to system failure

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3. When may contamination be introduced into the system?

It may form during the off cycle only When the system is manufactured or installed It may enter through leaks only None of the above answers

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4. True or False: Activated carbon is the best type of desiccant at removing moisture from refrigerant passing through it.

True False

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5. Beaded desiccants may wear down over time, causing:

Wax to close the gaps between the beads Oil breakdown Particles to be released into the system The beads to merge, becoming a solid core

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6. If you were to use Sporlan's Test-All oil sampling kit and receive a purple test result, what can you assume about the system?

It has a satisfactorily low acid level It's slightly contaminated with acid It has a high and unacceptable level of acid The test is faulty, and you will need to perform it again

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7. True or False: The Sporlan See-All moisture indicator will be green when a system is dry.

True False

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8. True or False: Particles as small as 5 microns are too small to pose a threat to the hardware of compressor bearings.

True False

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9. True or False: Drying the refrigerant should dry the oil.

True False

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10. When should you install a liquid line filter drier?

At the initial system install When the moisture indicator shows that the system is wet After cleaning up a burnout All of the above

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