My Air Compressor releases cold and low pressure, how do I fix this? I have a two stage IR STATIONARY AIR COMPRESSOR 13HP. When...

I have a two stage IR STATIONARY AIR COMPRESSOR 13HP. When its cold at dark the air compressor pressure go very slow even when i release adjectives the air and hose down in the condensation cistern. The pressure that comes out of the air lines to move the heavens tool is so slow that the air tool does not move. How do i solve this problem when I am working contained by the cold weather.
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Answers:    Check to see if your regulator is frozen or damaged. You can do this by taking it stale, and connecting the hose with out it.