Cummins Diesel Generators C500D6

Warning: Ensure the outside surface of the pipe is smooth and free from indentations, projections, and roll marks

Is the pipe surface clean from oil, grease, loose paint, and dirt?

Apply a thin coat of Victaulic lubricant or silicone lubricant to the gasket sealing lips and exterior

Is the gasket positioned correctly over the pipe end?

Are the two pipe ends aligned and brought together?

Is the gasket centered between the groove in each pipe end?

Are the housings installed over the gasket correctly?

Ensure the housings’ keys engage the grooves completely on both pipe ends

Are the bolts installed and a nut finger-tight onto each bolt?

The entire piping system filled with water

Pressure at the top of the system (should be at least 4 psig [28 kPa])

Pressure at all points in the system high enough to prevent flashing in the piping or cavitation in the pump

The best location to install the fill connection is close to the expansion tank. An air vent should be installed close by to help eliminate air that enters during the fill procedure.

Temporary bypass piping and cleaning/flushing equipment removed

Blow-down valve opened to flush the strainer

Normally, a closed system needs to be filled only once. The actual filling process is generally a fairly simple procedure. All air should be purged or vented from the system. Thorough venting at the high points and circulation at room temperature for several hours is recommended.

Ensure the unit is in the proper location and secured to the supporting structure.

Is the unit level to within 1/8 in. (.32 mm) per foot for proper oil return to compressor?

Are units with single compressors held down with 4 bolts through rubber grommets?

Are units with tandem compressors held down with 6 bolts per pair through grommets?

Verify mounting bolt torque 7 to 10 ft-lb (9.5 to 13.6 N•m)

For 30RAP100-150 units, remove RED bolts from compressor mounting rail and RED shipping braces.

Connect Cooler Fluid and Drain Piping

Warning: This maintenance check requires trained personnel with PPE!

Does the compression tank provide net positive suction head required (NPSHR) for the pump to operate satisfactorily?

Does the compression tank accommodate expansion/contraction of water due to temperature changes?

Does the compression tank act as a pressure reference for the pump?

Sign off on the compression tank maintenance

Warning: This procedure requires trained personnel with PPE!

Free air in the system causing noise or reducing terminal output?

If free air is causing issues, report to the maintenance team and stop the procedure

Choose the location of air separator installation

Enter the water temperature at the point of air separator installation

Enter the water pressure at the point of air separator installation

Air separator installed at the point of highest water temperature and lowest pressure?