In order to leak test a low pressure chiller, the chiller ...

[laurencescou]

In order to leak test a low pressure chiller, the chiller pressure
 
  A) chiller pressure must be increased to a positive pressure less than 10 psig
  B) should be increased by adding nitrogen
  C) chiller refrigerant must be recovered and replaced with nitrogen
  D) chiller pressure must be reduced to a safe level, under 150 psig

Question 2

The phases of a planned maintenance service call are:
 
  A) Operational checks and troubleshooting.
  B) Routine maintenance, troubleshooting, and replacing parts that cause problems on many systems.
  C) Routine maintenance, pre-start inspection, operational checks, and troubleshooting.
  D) Routine maintenance and operational checks.

[6ana001]

Answer to Question 1

A

Answer to Question 2

C