A solenoid valve is an electromechanical device, which operates by creating and eliminating a magnetic field. It is primarily composed of a coil of wire…

If the warmer evaporator is too cold, the drop in temperature may be due to a bad valve adjustment (too closely adjusted at too low…

In some of the larger commercial units, the suction line is connected to a multiple evaporator system requiring different temperatures, such as one evaporator in…

This type of control is used in heavy commercial and industrial refrigeration. They have two lines with flare nut connections: one is connected to the…

Connect the high-pressure gauge to the high-side service valve. Open the valve. Disconnect the condenser fan or block the airflow, or if it is a…

It is primarily a safety device which differs from the low-pressure control. Its sensing bulb is connected to a service valve on the discharge line…

First, shut off the unit and remove the control cover to expose the switch. Then connect a test light with alligator clips to the two…

The temperature in a commercial refrigeration unit is regulated by the low-pressure control. The low-pressure control intersects the wire going into either the run or…

In residential refrigeration units, a thermostat controls the temperature by connecting and disconnecting the power to the compressor. This type of cold control reacts to…

When two evaporators with two different temperatures are used in a system, a two-temperature valve is installed at the outlet of the warmer evaporator to…