Name the three terminals on a single-phase compressor. 2. Name two types of rela

Question

Name the three terminals on a single-phase compressor. 2. Name two types of relays used to sun a single 3.Why does a hermetic comperssor not use a cen trifugal switch like an open motor? 4. behind which terminal in a bermetic comperssor the internal thermal overload located? What must be done to repir a comperssor with a defetive internal overdload? 6. Which winding has the most resistance, the run or the start? 7. What cools the motor in a hermetic compressor? phase compressor motor. 8. Does oil ever touch the windings of a hermetic comperessor 9. Is there any difference between the materials in a the hermetic compressor motor and an open motor 10. What is the approximate loaded speed of a 5. W hat must be done to repair a compressor with a 3600 rpm compressor?

Explanation / Answer

1.The three terminals on a single phase compressor are CSR, C= Common; S= Start ; R= Run

2.The two types of relays used to start a single phase compressor are Potential relay and current relay

3.Hermetic compressor not use a centrifugal switch like an open motor because generally open motors are operated in atmosphere and a spark is produced but in Hermetic the spark is deteriorate the refrigrant.

6. The staring winding will have more resistance then the running winding.

10.Since the load puts additional strain on the motor so it reduces its rotational speed. so therefore the approximate loaded speed of a 3600 RPM compressor is between 2500 and 3000 RPM.

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