Compair Hollman compressor wont build pressure

by John
(Tamworth, Australia)

We recently purchased a drill rig with a Compair Hollman 600/250 compressor. It only operates on 100psi when hammering and drops to about 30psi when the drill bit is lifted. It will build up to 250psi when the air flow is cut off.


I emailed the Garner Denver agent but they have no manuals to assist.

Can you advise if this is the best we will get out of the machine?

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Sep 03, 2014
pressure
by: Doug in s.d.ca

It sounds as if something isn't right. But having a hard time figuring out exactly what it is, and how it's used.

Have you asked raglan drilling? They may have a clue.

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