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Changing Minimum Pressure/Check Valve Seals
Air/oil pressure will cause severe personal injury or death. Shut down
compressor, relieve system of all pressure, disconnect, lockout and tagout
power supply to the starter before removing valves, caps, plugs, fittings, bolts
and filters.
1. Be sure the unit is completely off and that no air pressure is in the oil reservoir. Close the service
valve.
2. Disconnect, lockout and tagout the power supply to the starter.
3. Tighten the nut down on the minimum pressure/check valve cover.
4. Remove the four (4) bolts holding the cover onto the separator housing.
5. Remove the snap ring in the cover.
6. Remove the internal parts (see Parts List Book) and replace the seals in the minimum
pressure/check valve.
7. Re-assemble valve, including the snap ring.
8. Tighten the cover down to the separator housing.
9. Loosen the nut on top of the minimum pressure/check valve .05 to .08 inches.
10. Run the unit and check for leaks.
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