Chapter 25 compression Refrigeration System, Pre-Startup Procedures Book 2

Question 1

Wed, litmus, paper, detect leaks, and ammonia refrigeration systems, by changing the color of the lit paper to

Answer 1

Reddish Hugh

Question 2

Higher than normal, head pressure is undesirable because of all of the following, except

Answer 2

Create low, evaporator pressure (pretty much creates problems only in the compressor)

Question 3

In a process called copper plating, the acids remove copper from heat exchanger, and re-deposit it at points of

Answer 3

High temperature

Question 4

Just before charging an empty refrigeration system, the entire system should be

Answer 4

Placed under a very high vacuum