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Service Practice 1 Oils

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Refrigerant oil that is hygroscopic

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The oils that are used with most HFC-134a refrigerant applications are ________

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The synthetic lubricants presently used with HCFC ternary blends are ______ lubricants

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Ester based oils can be mixed with _______

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An oil sample should be taken when _______

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An oil sample should be taken because _______

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An oil sample should be taken when _______

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When first inspecting a system with a hermetically sealed compressor when the system is know to be leaking, a technician should look for ________.

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Refrigerant will migrate to the crankcase of a compressor because of the difference in _______ between the oil and the refrigerant

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Oil foaming usually occurs in the _____ area of a high-pressure refrigeration system

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When removing oil from a low-pressure system, the compressor oil should be heated to 130*F because_______

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