Empowering you to work smarter
N.AV.AC
8. ROUTINE USE AND MAINTENANCE
Vacuum pump
1. Vacuum pump oil has three major functions: pump lubricant, pump cooling, and pump sealant.
During the evacuation process, the pump oil will absorb moisture being evacuated from the system,
causing it to be less effective as a lubricant and pump vane seal, extending evacuation time and
possibly causing the pump overheat.
2. Only special purpose vacuum pump oil is to be used as required.
Note:
In order to properly check the oil level in the vacuum pump, run the vacuum pump for one minute and
check oil level in the vacuum pump sight glass.
Adding Vacuum Pump Oil
When the oil level is lower than the
MIN
position in oil level window, vacuum pump oil must be added.
Use the following procedure:
1. Disconnect the power plug to the charging machine.
2. Remove the oil fill cap and add vacuum pump oil to the inlet under the fill cap. Add oil a little at a time
until the oil level reaches the middle position between MAX and MIN marks on the oil level window.
Place back the oil fill cap and tighten.
Note:
When the pump runs, oil level must be between the upper and lower lines of MAX and MIN. Too low oil
level will degrade performance of the pump, while too high oil level will cause a large quantity of oil
mist to discharge from the oil fill port.
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Empowering you to work smarter
N.AV.AC
Replace vacuum pump oil
We recommend that the oil be changed just before evacuating each NC-R system to insure the pump
oil is in a clean condition as this is the key factor in determining if the pump can achieve the required
vacuum levels. In order to maintain the optimum operation of the pump, we recommend that you use
NAVAC vacuum pump oil. This oil is made using a unique process and can maintain proper viscosity
during normal operation and temperatures, and it's also helpful for cold startup. Should the NAVAC oil
not be available, reputable brands of special purpose vacuum pump oil may be used.
Note:
Should the pump oil become opaque, dirty, or full of moisture, promptly change oil.
1. Run vacuum pump for 1 minute to warm oil.
2. Disconnect power supply to the charging machine.
3. Remove oil fill cap and loosen the oil drain valve. Slant the pump body and remove the oil drain
valve, draining used oil into an appropriate container and dispose of properly.
4.
After draining oil, lighten the oil drain valve. Fill with new vacuum pump oil until the oil level reaches the
line just below MAX. Tighten the oil filler cap. Run briefly (less than one minute) to verify proper oil level
(between MIN and MAX) before use.
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