Chapter 122

Question 0

To avoid liquid slugging in a direct expansion evaporator after shutting down a reciprocating or rotary compressor refrigerating system, which of the following measures needs to be taken?
A) pump down the evaporator
B) fill the compressor with liquid refrigerant
C) fill the evaporator with refrigerant vapour
D) open all the suction valves on the connecting condenser line
E) discharge all the condenser refrigerant into the evaporator

Answer 0

A) pump down the evaporator

Question 1

Checking the condition of electrical starters and contactors is categorized under which of the following maintenance schedules?
A) daily
B) weekly
C) monthly
D) semi-annually
E) annual

Answer 1

E) annual

Question 2

Checking the operation of the compressor lube oil pump, as well as the cooling coil, heater and oil reservoir level is:
A) weekly maintenance
B) monthly maintenance 
C) semi-annual maintenance 
D) annual maintenance

Answer 2

A) weekly maintenance