Sullair has high sump pressure

by Joey
(New Brandeis, tx)

Sullair compressor is reading around 140 psi sump pressure while unloaded and blow down valve is releasing. Why isn't sump pressure not dropping?

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Apr 19, 2018
Sullair high sump pressure
by: Doug in s.d.ca.

What model of Sullair is this one?

Nominal operating pressure?

Is pressure normal when loaded?

Is the intake closing when unloading?

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