Sullair Industrial Air Compressor SN55V

Warning: This maintenance check requires trained personnel with PPE!

Disconnect the tube at bottom of sight glass

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

Remove used filter assembly, and replace with new assembly

Inspect and clean the orifice inside the sight glass blocks. The orifice must be removed with an allen wrench

Coat/lubricate the O-rings with silicone grease

Reattach the connectors to the sight glass/orifice blocks

Sign off on the oil return/sight glass maintenance

Replace your fluid filter element under any of the following conditions, whichever occurs first:

• As indicated by the STS Controller.

1) Fluid filter element replacement

1. Using a wrench, remove the filter canister.

2. Remove and dispose of filter element. Observe all laws and regulations for filter disposal.

3. Clean gasket seating surface.

4. Apply a light film of fluid to the element seal.

5. Install the element into the filter canister.

Before starting the compressor, check the following:

Fluid level in the separator/sump tank

If the fluid level is low, add the necessary amount. If the addition of fluid becomes too frequent, refer to the troubleshooting guide.

After starting the compressor, observe the following:

Controller display monitors the correct readings for their particular phase of operation

After the compressor has warmed up, perform a general check on the overall compressor.

Perform a detailed visual inspection to avoid unnecessary additional damage to the compressor. Check the following:

Is the maintenance gauge showing red with the compressor running full load?

Has it been a year since the last air filter maintenance?

If either of the above checks is true, proceed with the following steps.

Clean the air filter’s exterior housing.

Release the hold-down clips and remove the end cover.

Remove the air filter element by pulling it out of the housing.

Clean the housing interior with a damp cloth. Do not blow dirt out with compressed air.

Reassemble in the reverse order.

Warning: High-pressure hazard. Relieve all pressure from the separator/sump tank and all compressor lines.

Pressure relieved from the separator/sump tank and all compressor lines?

All piping connected to the separator cover plate disconnected?

Twelve (12) hex head capscrews(5⁄8 in × 21⁄2 in) and lock washers from the cover plate removed?

Cover plate lifted from the separator/sump tank?

Old gasket material scraped from the underside of the cover plate and the separator/sump tank flange?

Separator/sump tank inspected for rust, dirt, etc.?

New separator element inserted into the separator/sump tank without denting the element against the tank opening?