Term
| Automatic Expansion Valves |
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Definition
| Evaporator pressure closes valve, spring pressure opens valve. |
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Term
| A faulty check valve on a pump will cause the most damage |
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Definition
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Term
| If the TEV sensing bulb falls off the suction line, you will |
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Definition
| flood the evaporator and raise the suction pressure |
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Term
| A clogged condenser pump strainer can cause a loss of pressure causing |
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Definition
| high condenser head pressure. |
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Term
| A solenoid valve is part of the pump down cycle. |
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Definition
| Thermostat solenoid valve and then the low pressure control. |
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Term
| What is the proper start-up procedure? |
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Definition
| Start chilled water pump and condenser water pump, check tower fans, compressor oil and position of refrigeration valves, start machine. |
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Term
| A reciprocating machine cycles multistage compressors on and off with |
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Definition
| the low pressure control. |
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Term
| The refrigerant that has the best cooling effect is |
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Definition
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Term
| In an induced draft cooling tower that is operating efficiently, the leaving water temperature is |
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Definition
| between the prevailing dry and wet bulb temperatures. |
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Term
| A sudden reduction in the supply of condenser water could result in |
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Definition
| increase in head pressure. |
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Term
| Reciprocating compressor unloaders work by |
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Definition
| keeping compressor suction valves open. |
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Term
| In a well design system, the percent of lubricant circulated should not exceed |
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Definition
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Term
| Oil foaming in the compressor is a result of |
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Definition
| liquid refrigerant in the crankcase. |
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Term
| The main reason for installing an oil separator on the discharge line is to |
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Definition
| return oil to the compressor crankcase. |
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Term
| In a reciprocating compressor using the splash system for lubrication, the foaming of oil is caused by |
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Definition
| a sudden decrease in pressure. |
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Term
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Definition
| suction side of the compressor.(low side) |
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Term
| Oil in a refrigeration system reduces |
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Definition
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Term
| A filter dryer is used to remove |
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Definition
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Term
| Oil separator is located on the discharge line |
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Definition
| as far from the compressor as possible |
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Term
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Definition
| does not vary the flow of refrigerant. |
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Term
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Definition
| modulates and controls the flow of refrigerant into the evaporator. |
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Term
| A motor has 4 belts, if one is worn |
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Definition
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Term
| If you use an automatic expansion valve with a variable load, you will |
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Definition
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Term
| Non-condensable gases can cause |
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Definition
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Term
| Horse power will increase |
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Definition
| as head pressure increases |
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