Auxiliary Machinery. Test 31
Auxiliary Machinery. Test 31
The discharge pressure of a freon compressor gradually falls below the desired value. What action would you take to increase the pressure again
On the air compressor's crankcase there is a small valve that lets off overpressure. What do we have to do if this valve is letting off pressure and oil moisture ?
What is the state of the refrigerant immediately after the evaporator?
What refrigerant temperature would you expect to find at the compressor discharge of an air conditioning system?
What would be the effect if air was to enter a freon refrigeration system?
What refrigerant temperature would you expect to find at the compressor suction of an air conditioning system?
If water contamination occurs in the crankcase oil of an auxiliary engine the oil viscosity will:
At which of the pressures shown should the low oil pressure trip operate on a freon compressor?
What is the state of the refrigerant immediately before the expansion valve of a freon system?
What pressure is present in the crankcase of a freon compressor?
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