MSI QI-1000, Техническое руководство, Страница: 23 / 56

4.7 Fluid End Plunger and Packing Lubrication Requirements
It is essential for the effectiveness and life of the plunger packing to provide sufficient lubrication to the fluid
end plungers and stuffing Reducer. Failure to do so may result in short packing life, plunger damage, and
costly downtime. Typical fluid end plunger lubrication systems utilize either an air over oil pneumatic or
positive displacement grease system. Either lubricating method is acceptable as long as the following
guidelines are heeded.
The lubricant should be suitable for the entire operating temperature range of the well service pump, resist
water, inhibit corrosion, and provide wear protection. Oils used for plunger lubrication will typically have a
viscosity index of about 95, and greases will be NLGI grade 0 to 2; depending on the application.
4.8 Oil Change and Oil Types
API Service Classification GL-5 Extreme Pressure (EP) gear oils are required for lubrication of the power end
and gear reducer. These oils contain additives that allow sustained high loads and prevent oxidation, rust, and
foaming. The oil viscosity should be selected based on the anticipated ambient start-up and steady-state
operating temperatures.
4.9 Cleaning Plunger Lubrication Drip Pan
The drip pan is intended to collect plunger lubricant that bypasses the sealing element. To clean the pan
remove the screws and slide the pan out from below the pump. Clean then reinstall it.