Oil change, maintenance work

Under dirty operating conditions it is possible for dust deposits to form a crusf in the pump chamber. These contaminants will deposit in part in the pumping chamber and in part on the pump s impellers. They may be removed, once the two connection lines have been detached, either by blowing out the system with dry compressed air or by rinsing with a suitable cleaning agent, such as petroleum ether (naphtha). 

The oil in the roots pump will then have to be changed. The rotor may be turned only by hand during cleaning since, due to the high speed when the 

Grime which cannot be eliminated by washing can be removed mechanically using a wire brush, metallic scrubber or scraper. 

The dislodged residues may not remain in the pump chamber. After cleaning is completed check the pump for operability by slowty turning the impellers by hand. There may be no resistance to rotation. It is generally not necessary to dismantle the roots pump. If this should nevertheless be required due to heavy soiling, then it is highly advisable to have this done by the manufacturer. 

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