CHILLER SYSTEM - Quiz

1) What is the cause of bubbles in liquid line sight glass after gas charging the system?

Excess refrigerant Shortage of refrigerant Oil bubbles in sight glass Nitrogen trapped in system

2) What is the effect if the refrigeration system is started before chilled water pump?

No cooling Water warms in chillier Water freezes in chillier Excess of heat transfer

3) Which control trips if the expansion valve inlet strainer is blocked in chiller AC plant?

Thermostat control Low pressure cut out Oil pressure cut out High pressure cut out

4) What is the effect of improper alignment of machines while installing a central AC plant?

Silent operation Excess of wear and tear Less noise and vibration Less power consumption

5) What is the remedy for no lubrication even if the sight glass shows proper oil level?

Replace oil pump Add oil to crankcase Replace oil pressure gauge Replace oil pressure cut out