Satellite Slide Tank User Manual

Page 29

service. This is important because the
cleaning procedure will rid the pump of
both dirt and the necessary oil for
lubrication.

Check vane wear at the interval
recommended in your OEM pump manual.
It is important to stay on top of vane wear
because most pump manufacturers do not
warrantee damage caused by vane
breakage.

Table 4.4 High Vane Wear Operating Conditions

The conditions below will reduce vane life and

necessitate more frequent vane wear checking

Fine grit in intake air (e.g. sand, rust, or soil dust
particles)

Many long intervals in operation*

Many intervals of high Hg. operation* (e.g. as when
required to lift product a great distance).

Consistent use of pressure dumping

Running the pump dry on oil

Using the wrong oil in pump (use only manufacturer
recommended oil in your pump)

Any situation in which the pump overheats

Lack of periodic pump flushing maintenance

Lack of pump flushing maintenance after water has
entered the pump

Attempting to engage a pump that is frozen with
ice(before thawing the pump out)

You may need to change your vanes more
often than the manufacturer’s
recommendation if your pump is subjected
to very heavy use. See table 4.4 for
examples of heavy use factors that can
shorten vane life.

When vane wear exceeds ¼” (for most
pumps), the vanes must be replaced. New
vanes, when bottomed in the rotor slots,
will be flush with the outside diameter of
the rotor. As such, vane wear is
determined by measuring how deep the
edge of the worn vane sits below the
outside of the rotor.

In addition, if the pump volume declines
significantly (i.e. it takes longer and longer
to fill the tank), then the vanes probably
need to be changed.

*Note: Pumps rated for continuous or heavy duty
operation (such as liquid cooled pumps) can handle
these conditions more readily.

Checking the vanes the Conde vacuum
pump supplied with your slide-in unit
involves disassembling one of the end

Rotor Shaft

O-Ring

End Plate

Seal

Bearing

Seal

Gasket

Bearing Plate

Drive Shaft

Rotor Vanes

Figure 4.4 Slide-in Vacuum Pump – Front End

Checking Rotor Vane Wear