Although centrifugal compressors are generally suitable for unprotected outdoor installations, daily temperature fluctuations can affect equipment alignment. Cold temperatures, heavy rains, salt atmosphere, blowing dirt or sand can make maintenance difficult, and maintenance of equipment cleanliness impossible.
Most equipment specification packages include detailed requirements for weather protection of controls and instrumentation. However, conditions vary between locations. Therefore, get specific input from site personnel. Also, make sure the specifications accurately reflect what the field has found to be most trouble-free.