Effect of Moisture/Air

If air enters into the system, it will cause

• high oil pressure

• low condensing pressure

• low evaporating pressure

• high condensing pressure

Identify the following refrigeration accessory which can be used to check the presence of moisture in the system.

• muffler

• Oil separator

• Moisture indicator

• Strainer

If high discharge pressure occurred in the refrigeration system, it will cause

• A loss in cooling capacity

• A drop in power consumption

• A decrease in running ampere

• An increase in refrigerant flowrate

In the presence of high compressor temperature, refrigerant breaks down and form harmful acids because of

• oil

• leakage

• moisture

• non-condensable gases

Moisture presence in the refrigeration system will

• Damage the compressor valves

• Cause high condensing temperature

• Cause low condensing pressure

• Lead to motor burnt out

If air enter the refrigeration system, it will create high pressure and this will cause

• fan motor to run faster

• system not very cold

• refrigerant to flow faster

• the hermetic motor to burnt out

If air enters into a refrigeration system, it will cause

• High oil pressure

• Low condensing pressure

• Low evaporating pressure

• Discharge pressure to increase

Rusting, corrosion, or oil sludging, which could result in a motor burnout in hermetic system is the result of

• non-condensable gases

• oil and refrigerant mixtures

• acids in the system

• insufficient refrigerant in the system

Which one of the following faults is not cause by moisture in the refrigeration system

• High oil pressure

• Blockage at the capillary tube

• Corrosion of metal

• Oil breakdown

Refrigerant breaks down and formation of harmful acids was caused by

• oil

• leakage

• moisture

• Non-condensable gases