EPRs: What They Do & How They Impact the Entire Parallel Rack

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EPRs: What They Do & How They Impact the Entire Parallel Rack

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1. What is the circled component in the image below?

Evaporator pressure regulating valve (EPR) Oil reservoir Oil regulator Oil separator

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2. True or False: Market refrigeration systems have a dedicated oil pump that moves liquid oil through the system.

True False

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3. Which of the following is a method we can use to cool compressors?

Fan mounted to the head Liquid injection Vapor injection All of the above

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4. True or False: There will always be one case for each circuit.

True False

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5. What is the purpose of an EPR?

To take an undesired saturated suction temperature (SST) and change it to an ideal level To let you set a custom cutout temperature that shuts the entire rack down To stop the evaporator from getting flooded To hold back evaporator pressure at a specified saturated suction temperature (SST)

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6. What does SPORT valve stand for?

SORIT Placed On Regulator Tube Solenoid Parker Open on Rise Tap Solenoid Placed On Rise Tap SORIT Parker On Regulation Tool

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7. How does a CPS valve modulate itself?

Electronic steppers Sensing bulbs with a stable fluid enclosed Pressure transducers It doesn't modulate

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8. What does it mean if a refrigerant has high glide?

It's a blend that will have its properties compromised in a leak It's a blend with the dew point and bubble point far apart It's a pure refrigerant with extremely high pressures It's a pure refrigerant with multiple saturation temperatures at atmospheric pressure

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9. What does Matthew Taylor recommend using to set the EPR if you have a refrigerant with high glide?

Dew point Midpoint Bubble point Any of the above

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10. Where is the highest pressure in the entire system?

By the oil separator By the oil regulator By the oil reservoir Right before the EPR

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