A few useful things to remember....

• Do not run single phase off long extensions cables.
• A static 3hp compressor should be wired in with a 20 amp supply and type D breakers.
• No need to drain every day, just crack the drain value daily and blow any condensate out of the drain.
• Keep dust off the compressor.
• Where applicable remove air intake filter and clean element.
• Check oil level weekly.
• Always switch the compressor off at night. As any pressure drop in the system will stop and start it.