Does the air drier in compressor need to change?

by kamjoo.soodeh
(kerman,Iran)

I have a 7.5 HP , 750 lit , 2900 r/min air compressor . what's the period that I must change it's air drier ?
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Bill says...

Hello again, kamjoo.soodeh.

The answer is, when the air exiting the drier is no longer as dry as your application demands.

I don't know what type of drier you have, so I don't know the exact refill-change-protocol for your unit.

The purpose of the drier to reduce compressed air-borne vapor and free water to an acceptable level. If yours isn't doing that now, and it did before, then it's time to replace whatever element is drying the air.

Cheers,

Bill