When discharge pressure of the compressor becomes excessive which one of the following operates

The low pressure control protects the system against the following

For ice making, the ice can, after freezing are dipped in hot water, this process is known as

Non-ferrous metals are never used with one of the following refrigerants

The butter prepared from the cream removed from the milk is stored at a temperature range of

Pasteurization of milk is carried out to

Dip tanks are used in the

A.H.U. is used in

In all water system the working fluid used is

The function of a filter in the air conditioning system is