Oil carryover persists even shortly after a separator element change.
1
Element gasket seated incorrectly or housing not torqued to spec
Rotary screw
CheckRe-inspect installation: correct orientation, clean sealing surface, proper torque sequence per OEM.
FixReinstall correctly per OEM procedure; replace gasket if damaged.
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2
Wrong (non-OEM or incorrect micron rating) element installed
Rotary screw
CheckVerify part number against OEM specification.
FixReplace with correct OEM or OEM-equivalent element.
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3
Excessive pressure differential rupturing the element media
highRotary screw
CheckCheck maintenance log for ΔP at time of last change; elements should be changed before reaching OEM max ΔP (often 10–12 psid, verify nameplate/manual).
FixReplace element; establish routine ΔP monitoring/change schedule.
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4
Housing weld or gasket surface damaged
Rotary screw
CheckVisual inspection of housing sealing surface and shell.
FixRepair or replace separator vessel.
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Safety
Lockout/tagout before opening enclosures. Verify zero energy. Bleed system pressure before opening any pneumatic connection.