Recommended Lubricant - NVE 866 Challenger Series Owner's Manual

Recommended Lubricant ______________________________________

• We recommend that turbine oil be used in our pumps. Turbine
oil is much more resistant to breakdown due to heat than normal
motor oil, thereby avoiding the problems associated with motor
oil such as lacquering and excessive wear.
Acceptable oils include:
1. * NVE ISO 68 Oil
2. Penzoil Penzabell 68 T.O.
3. Shell Turbo 68
4. Mobil D.T.E. Heavy - Medium
5. Texaco Regal R & O 68
* NVE ISO 68 Oil is our recommended pump oil for the
Challenger series vacuum pumps. Challenger Vacuum Pump Oil
is sold by the case, six-1 gallon containers of oil per case.
Ballast Cooling __________________________________________________
• Ballast cooling of a vacuum pump is accomplished by
introducing atmospheric air into the exhaust side of the pump
housing. The ballast inlet is located at a point where the
affected pump cell is no longer in contact with the intake port.
• The result is cooling of the housing and rotor with no
appreciable drop in vacuum level.
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