Podcast
Questions and Answers
What method is used to control the compressor output by shutting down the compressor when little or no air is required by the system?
What method is used to control the compressor output by shutting down the compressor when little or no air is required by the system?
- Dual control
- Start and stop control (correct)
- Variable speed control
- Load/unload control
Which type of compressor units can utilize the start and stop control method as described in the text?
Which type of compressor units can utilize the start and stop control method as described in the text?
- Electric motor driven units (correct)
- Gasoline motor driven units
- Diesel motor driven units
- Steam turbine driven units
What should be done to prevent the compressor from continuously starting and stopping according to the text?
What should be done to prevent the compressor from continuously starting and stopping according to the text?
- Increase the pressure setting on the pressure switch
- Use a smaller receiver to reduce costs
- Use a variable speed control
- Install a sufficiently large receiver (correct)
How does the unloader protect the motor from overloading during the startup period?
How does the unloader protect the motor from overloading during the startup period?
What happens to the unloader valve when the compressor reaches operating speed?
What happens to the unloader valve when the compressor reaches operating speed?
What is the main function of the centrifugal type loader shown in Figure 12?
What is the main function of the centrifugal type loader shown in Figure 12?
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 a load/unload control system, what does the pilot type unloader do?
In a load/unload control system, what does the pilot type unloader do?
How does the inlet valve unloader operate in a load/unload control system?
How does the inlet valve unloader operate in a load/unload control system?
What method is used to adjust the compressor speed according to system demand?
What method is used to adjust the compressor speed according to system demand?
When does the pressure-actuated control slow down the driving engine or turbine in a variable speed control system?
When does the pressure-actuated control slow down the driving engine or turbine in a variable speed control system?
What happens in dual capacity control when a compressor runs a set time without loading?
What happens in dual capacity control when a compressor runs a set time without loading?
What is one function of protective controls in a compressor system?
What is one function of protective controls in a compressor system?
How does an inlet valve unloader operate in a reciprocating compressor system?
How does an inlet valve unloader operate in a reciprocating compressor system?
In what situation does dual control shut down a compressor in a reciprocating system?
In what situation does dual control shut down a compressor in a reciprocating system?
What does an inlet valve unloader do when operating due to decreased air pressure in a reciprocating compressor system?
What does an inlet valve unloader do when operating due to decreased air pressure in a reciprocating compressor system?
