Sullair Industrial Air Compressor 7509B AC

After the initial 50 hours of operation, a few maintenance actions are required to clean the system of any foreign materials.

Clean the return line strainer. Refer to Maintenance Every 2000 Hours for location.

Sign off on the initial 50 hours compressor maintenance

Start the compressor and adjust the service valve to maintain service air pressure at approximately 1 psi over its rated pressure.

Turn the inlet valve regulator adjusting screw until air just begins to escape from the control air orifice, located at the bottom of the regulator.

Lock the adjusting screw in place with the locknut.

The regulator is now properly set.

Sign off on the pressure regulator adjustment

Warning: This procedure requires trained personnel with PPE!

Regulator and solenoid valve(s) are protected by a strainer

Hex cap removed from the strainer

If the screen is damaged, the strainer assembly must be replaced (P/N 241772)

Sign off on the strainer cleaning

Warning: This maintenance check requires trained personnel with PPE!

Is the elastomeric element worn or damaged?

If the elastomeric element is not worn or damaged, stop the procedure

Remove the protective grill from the adapter housing

Loosen the retaining screw located on the outer sleeve. Slide the sleeve to one side, exposing the coupling element

Unwrap the coupling element from the coupling jaws

Install the new element by wrapping it around the jaws, engaging the cogs on the element into the jaws

Tighten the two screws to 45 in·lbs (5 Nm)

The fluid return/sight glass subassembly is located on the side of the separator tank.

Fluid return/sight glass maintenance should be performed along with that of the fluid filter.

Fluid return/sight glass issues usually result from the condition of the filter assembly.

Order filter assembly No. 02250117-782, and use the following instructions as a guide:

Disconnect the tube at the bottom of the sight glass.

Unscrew the sight glass assembly where the elbow fitting joins the strainer/filter.

Remove the used filter assembly and replace it with the new assembly.

Inspect and clean the orifice inside the sight glass blocks. Remove the orifice with an Allen wrench.

Coat/lubricate the O-rings with silicone grease.