Leybold Rotary Vane Pump SV200 955 27

Preparation and Safety Precautions

Ensure the pump is switched off but still at working temperature

Ensure the use of an oil filter key (710 73 532)

Observe safety regulations to avoid burns and exposure to dangerous substances

Unscrew the oil-drain plug (6/5) and let the used oil drain into a suitable container

Screw the oil-drain plug back in when the flow of oil slows down

Briefly switch on the pump (max. 10s) and switch it off

Remove the oil-drain plug again and drain the remaining oil

Degas the oil if gases or liquids are present

Drain the required amount of oil for inspection

Observe safety regulations during the procedure

5.2 Maintenance Intervals / 5.4-G Checking the Anti-Suckback Valve

Ensure all necessary tools are available

Keep the anti-suckback valve clean to ensure proper operation of the pump

Is a dust filter installed upstream if the pump is exposed to large amounts of dust or dirt?

Remove the fastening screws at the top of the pump-cylinder cover (7/51a-52a)

Loosen the pump foot (7/94a) at the bottom of the cover and take off the cover

Remove four screws and take off the intake flange (7/57) and gasket (7/55)

Remove the spring and anti-suckback valve, and replace them if required

Clean the oil cooler with compressed air

5.2 Maintenance Intervals / 5.4-D Replacing the Exhaust Filters and Checking the Pressure Relief Valve

Check conditions for replacement

Remove the exhaust flange (6/2) with gasket (6/3)

Unscrew the lock nut (6/31) and remove spring between its both washers

Take out the exhaust filter element(s) (6/29)

Check pressure relief valves for free movement and proper sealing

Reassemble in the reverse sequence

Ensure exhaust filter elements are properly centered and positioned

Install spring between its both washers, and tighten stop nut (6/31) fully home with the 10 mm box wrench