Sullair Water-Cooled Compressor 10B 25HP-251326-004 WC

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

Warning: This maintenance check requires trained personnel with PPE!

Remove the appropriate piping from the thermal valve housing

Remove the four (4) capscrews holding the housing together and separate the upper housing from the lower housing

Remove and replace the element seal in the upper housing

Remove and replace the o-ring between the upper and lower housings

Sign off on the compressor thermal valve maintenance

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 maintenance procedure

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

Place a bright light inside the element to inspect for damage or leak holes. Concentrated light will shine through the element and disclose any holes

Inspect all gaskets and gasket contact surfaces of the housing. Should faulty gaskets be evident, correct the condition immediately

If the clean element is to be stored for later use, it must be stored in a clean container

After the element has been installed, inspect and tighten all air inlet connections prior to resuming operation

Sign off on the air filter element inspection