Podcast
Questions and Answers
What is the purpose of the start and stop control method in a compressor system?
What is the purpose of the start and stop control method in a compressor system?
- To protect the motor from overloading
- To maintain a constant pressure in the system
- To shut down the compressor when little or no air is required (correct)
- To control the compressor speed
Why is it important to have a sufficiently large receiver in the start and stop control method?
Why is it important to have a sufficiently large receiver in the start and stop control method?
- To reduce compressor wear and tear
- To avoid continuous starting and stopping of the compressor (correct)
- To increase the efficiency of the motor
- To ensure the compressor operates less than 50 percent of the time
What is the role of the unloader in a compressor system?
What is the role of the unloader in a compressor system?
- To switch on and off the compressor
- To sense the pressure in the receiver
- To load and unload the compressor based on speed (correct)
- To vary the flow of air from the compressor
Which type of control method is specifically mentioned as being used only for electric motor driven units?
Which type of control method is specifically mentioned as being used only for electric motor driven units?
How does the unloader valve operate in a compressor system?
How does the unloader valve operate in a compressor system?
Why should the compressor be automatically unloaded during startup?
Why should the compressor be automatically unloaded during startup?
What is the purpose of the unloader valve in a reciprocating compressor system?
What is the purpose of the unloader valve in a reciprocating compressor system?
In which situation would a pilot type unloader vary the output from the compressor according to air demand?
In which situation would a pilot type unloader vary the output from the compressor according to air demand?
What is the purpose of holding the inlet valves open in a compressor with load/unload control?
What is the purpose of holding the inlet valves open in a compressor with load/unload control?
Which type of control method allows for adjusting compressor speed by varying the motor speed, regulating steam supply, or regulating fuel supply?
Which type of control method allows for adjusting compressor speed by varying the motor speed, regulating steam supply, or regulating fuel supply?
When does a compressor with dual capacity control shut down?
When does a compressor with dual capacity control shut down?
What is the function of protective controls in a compressor system?
What is the function of protective controls in a compressor system?
In load/unload control, what happens to the inlet valve when the compressor is unloaded?
In load/unload control, what happens to the inlet valve when the compressor is unloaded?
How does a variable speed control method respond to an increased demand for air?
How does a variable speed control method respond to an increased demand for air?
What does an inlet valve unloader do when a compressor is loaded?
What does an inlet valve unloader do when a compressor is loaded?
Why is a pilot type unloader used in compressors that are very large?
Why is a pilot type unloader used in compressors that are very large?
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