Ingersoll Rand Mobile Compressor 9/270

WARNING: Do not remove the filter(s) without first making sure that the machine is stopped and the system has been completely relieved of all air pressure.

• Clean the exterior of the filter housing and remove the spin–on element by turning it in a counter–clockwise direction.

CAUTION: If there is any indication of the formation of varnishes, shellacs or lacquers on the filter element, it is a warning that the compressor lubricating and cooling oil has deteriorated and that it should be changed immediately. Refer to LUBRICATION later in this section.

• Clean the filter gasket contact area and install the new element by screwing in a clockwise direction until the gasket makes contact with the filter housing. Tighten a further 1/2 to 3/4 of a revolution.

CAUTION: Start the machine and check for leakage before the machine is put back into service.;

Verify, during full–load (maximum compressed air delivery) that the IQ System filter restriction indicators do not show excessive restriction.

Restriction indicators for the filters are mounted inside the control panel.

Restriction indicators will shut down the compressor if restriction exceeds recommended values.

* Every 1500 Hours Injection Nozzle Check

• Check Wheels (Bearings, Seals, etc.)

• Test Shutdown Switch Settings

• Check Scavenger Orifice & Related Parts

• Replace Oil Separator Element

Remove Y–strainer screens at the bottom of the moisture separator and both filters and clean out any residue

Verify that the orifices below the Y–strainers are not clogged

Verify that the piping from the orifice purge points to the exhaust system is not clogged

Sign off on the system maintenance

Normally, regulation requires no adjusting, but if correct adjustment is lost, proceed as follows:

• Adjust the service valve on the outside of the machine to maintain normal operating discharge pressure and full speed position.

• If the tachometer moves away from the full speed position before normal operating discharge pressure is attained, then turn the adjusting screw ‘A’ clockwise to increase the pressure.

• Optimum adjustment is achieved when the throttle just moves from its full speed position and the pressure increases slightly.

• Close the service valve. The engine will slow to idle speed.

CAUTION: Never allow the idle pressure to exceed maximum allowable pressure.;