When starting a water-cooled compressor after winter shutdown, the following procedure is suggested: 1. Install a pressure gauge on the condenser, and check for pressure.…
Author: sam
The reinstallation of a compressor is roughly a reversal of the process of removing it. First, place the mounting pads and washers in position. Place…
To remove a compressor from the unit, proceed as follows: 1. Attach a compound gage to the suction-line valve. Close the suction-line shutoff valve and…
The reason for a compressor being stuck-up is usually the result of moisture in the system, or a lack of lubrication. When this occurs, the…
A knock in the compressor may be caused by a loose connecting rod, eccentric strip and rod, eccentric disk, piston pin, crankshaft, or too much…
To determine whether a compressor is leaking at the seal, proceed as follows. Close the shutoff valves by turning the stem clockwise as far as…
In most air-conditioning and refrigeration systems, it is possible to control the refrigerant feed so that liquid refrigerant does not return to the compressor during…
Centrifugal compressors are essentially high-speed machines and best suited for steam-turbine drives. Because they are designed for the same high speed as the turbine, they…
Since they are hermetically sealed, resulting in an improved drive method (the motor and compressor being located in a common enclosure), rotary compressors are presently…
To control the rate of flow of the liquefied refrigerant between the high- and low-side pressures of the system, some form of expansion device must…