Sullair Air-Cooled Compressor 10B 30 AC

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

Repair pressure regulator valve 250017-280, use repair kit 250019-453

Loosen the locknut and turn the adjusting screw counterclockwise until the inner spring tension is relieved. The adjusting screw should turn freely when the spring tension is relieved

Remove the spring chamber from the body to allow access to internal parts

Remove the spring button and the spring. The dampener will stay inside the spring as it is removed. Leave the dampener inside the spring as there is no need to remove it

After removing the spring, remove the gasket stop and brass gasket

Remove the pressure plate nut and disassemble the pressure plate, diaphragm, diaphragm gasket (rubberized asbestos), seat disc and seat gasket

Remove and discard the seat ring

Reassemble the regulator using the new parts provided in the repair kit

Reassemble the diaphragm, pressure plate, gasket, seat disc, and seat disc gasket and tighten the nut. All of these parts with the exception of the pressure plate are provided in the repair kit

Pressure relieved from the sump tank and all compressor lines?

All piping connected to the sump cover disconnected?

Hex head capscrews from the cover plate loosened and removed?

Cover plate lifted from the sump?

Old gasket material scraped from the cover and flange on the sump?

Separator element reinserted into the sump without denting it?

WARNING: Turn off all power, relieve line pressure, and disconnect coil lead wires to the valve before making repairs

It is not necessary to remove the valve from the pipe line for repairs

Clean solenoid valve (P/N 250017-993)

Remove the retaining cap and slip the entire solenoid off the solenoid base subassembly

Unscrew the solenoid base assembly. Remove the core assembly, core spring and body gasket

Remove the end cap, body gasket, disc spring, and disc holder assembly

Replace worn or damaged parts with repair kit number 250018-970

Reassemble in reverse order of disassembly

Sign off on the compressor solenoid valve maintenance

Warning: This maintenance check requires trained personnel with PPE!

Enter the part number of the coil

Yoke containing the coil and sleeves slipped off the solenoid base sub-assembly

Reassembled in reverse order of disassembly

Sign off on the compressor coil maintenance