Sullair Air-Cooled Compressor 10B 40HP-251325-003 AC

Check the fluid level in the sump. Should the level be low, simply add the necessary amount

Observe the gauges and indicators to be sure they monitor the correct readings for that particular phase of operation

Check on the overall compressor and gauges to assure that the compressor is running properly after it has warmed up

Clean the return line strainer after the initial 50 hours of operation

Clean the return line orifice after the initial 50 hours of operation

Warning: This procedure requires trained personnel with PPE!

Control System adjusted to desired operating range of 115 to 125 PSIG (792 to 862kPa)?

Cover to pressure switch removed?

Range adjusting screw turned to the high pressure setting?

Differential adjusting screw turned to the lower (reset) setting?

Pressure switch adjustment complete?

Pressure regulator adjusted for the pressure at which modulation of air delivery should begin?

Clean exterior of air filter housing

Remove the air filter cover by loosening the wingnut securing the cover

Remove element and clean interior of housing using a damp cloth. DO NOT blow dirt out with compressed air

Reset the filter maintenance indicator

Sign off on the air filter element replacement

WARNING: Before performing maintenance on the valve, be sure that all pressure has been relieved in the compressor sump, and all downstream pressure has been vented to the atmosphere. Also be sure that the components of the compressor are cool to the touch

Unscrew the minimum pressure/check valve (P/N 241581) from the receiver cover

Remove the hexagonal retaining cap from the main body

Remove the flat washer and heavy spring from the main body

Tap the piston assembly (with a screwdriver) from the bottom of the main body and remove. The o-ring will now be seen easily

Remove the seal ring and discard

Clean piston assembly and valve thoroughly

Replace seal ring and coat the piston and seal with Parker Super “O” Ring Seal or an equivalent quality grease

WARNING: Extreme caution should be used when removing the cap from the body because there is spring tension on the cap

Replace the fluid filter element

Replace your fluid filter element and the gasket under any of the following conditions, whichever occur first

Conditions for replacing fluid filter element

To replace fluid filter element:

Using a strap wrench, remove the old element and gasket

Apply a light film of fluid to the new gasket

Hand tighten new element until new gasket is seated in the gasket groove