Inspecting the condenser unit

Air Conditioning and Heat Pumps · The Basics · printed page 212 (PDF page 213)

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Book index entries

Air Conditioning – Units – Inspecting Condenser – Air Conditioning – Inspecting Air Conditioning – Basics

Text in the illustration

condensation here is OK, but frost or ice indicates a problem
refrigerant gas
refrigerant liquid
check to see that the suction line (larger tube) is cool
it should also be insulated and the insulation should be in good repair
the liquid line should be warm
the air blowing out of the condenser should be warm
100°F
Outside air

Generated explanation

The illustration shows an outdoor air-conditioning condenser unit with a top-mounted fan and a side air intake. Arrows indicate outside air entering through the side and warm air discharging upward, with the discharge arrow marked 100°F. An enlarged detail shows refrigerant gas entering through the larger, insulated suction line and refrigerant liquid leaving through the smaller liquid line. The inspection annotations state that the suction line should be cool, its insulation should be in good repair, and the liquid line should be warm. Condensation at the suction connection is identified as acceptable, while frost or ice indicates a problem.

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