Here are the two things you need to check weekly on your air compressor:

 

Inspect Filters. If filters are clogged with dirt, your compressor won’t run efficiently. Clean or replace filters as needed for optimal performance.

Inspect Belts. Look over belts for signs of wear like cracking or stretching. Replace as necessary

Edited November 24, 20178 yr by Ron Dudelston
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I would add that if you have a "wet" compressor (it has a built-in oil bath), that you should check the sight glass before you use it...it's easy enough to do every time.   Most of them will leak some (that I've seen).
 

Belts are really important, i check the ones at work regularly....

On 12/28/2016 at 9:40 AM, p_toad said:

I would add that if you have a "wet" compressor (it has a built-in oil bath), that you should check the sight glass before you use it...it's easy enough to do every time.   Most of them will leak some (that I've seen).
 

 

Thanks for the update p_toad. Its really a valuable point.

On 12/31/2016 at 11:16 AM, Miataguy said:

Belts are really important, i check the ones at work regularly....

You also need to check the Filters Miataguy. It is also equally important as of the belts.