Exam 49: Operation, Maintenance, and Troubleshooting of Chilled-Water Air Conditioning Systems

If an absorption chiller makes an "ice-crackling" sound, it is an indication that no condenser water is flowing.

The ____________________ creates much less pressure drop through the valve than the globe valve and is a much better application where excess pressure drop is a concern.

What is meant by the term "blowdown"?

Ball valves for refrigerant piping are used for larger applications and come in sizes up to about   ____________________ .

Water-cooled chillers must have water treatment to ____.

There should be a ____ test point at the inlet and outlet of any water heat exchanger, chiller, or condenser.

How are reciprocating, scroll and rotary compressors lubricated?

There are three lines of defense against refrigerant leaks in a service valve: the back seat, the packing gland, and the ____________________.