Atlas Copco Oil-Sealed Rotary Vane Vacuum Pump GVS 630A

If the pump is cold, run the pump with closed suction intake for 10 minutes to warm up the oil

Stop the pump and disconnect it from the mains

Open the oil drain valve and drain the oil completely into a container large enough to hold all the oil and tilt the pump slightly (if possible)

Close the oil drain valve and fill with new oil through the filler plug up to the middle of the oil sight glass. The oil level must not exceed the allowed maximum level

Wipe off eventual oil spills from the pump and/or the floor

Connect to mains again and verify correct rotation direction of the pump

Tools required: tubular box wrench 16 mm (0.62 inch)

When the exhaust filter elements are clogged, the integrated by-pass opens and the filters are bypassed

Oil mist at the exhaust, and/or high oil consumption are signs that the exhaust filters are clogged

The exhaust filters must be replaced more often if subjected to increased oil cracking products at high operating temperatures and/or aggressive media

Remove the cover with gasket. Remove the exhaust deflector by unscrewing the bolt. Remove both demister support units by unscrewing the nuts

The exhaust filters can be removed individually. Check also the float valve

Plug new exhaust filters into the oil casing. Insert carefully the demister support units over the new exhaust filters threaded bars (M6) and compress slightly the demister springs

Tighten the demister support units and the exhaust deflector. If necessary mount a new seal and mount the cover;

Apply a thin film of oil on the gasket of the new oil filter

Clean carefully the contact surface of the gasket on the tank

Sign off on the oil filter change

If the pump is cold, run the pump with closed suction intake for 10 minutes to warm up the oil

Stop the pump and disconnect it from the mains

Open the oil drain valve and drain the oil completely into a container large enough to hold all the oil and tilt the pump slightly (if possible)

Close the oil drain valve and fill with new oil through the filler plug up to the middle of the oil sight glass. The oil level must not exceed the allowed maximum level

Wipe off eventual oil spills from the pump and/or the floor

Connect to mains again and verify correct rotation direction of the pump

Let the pump run with closed intake for a few minutes, stop the pump and check the oil level. Top up if necessary;

Tools required: tubular box wrench 16 mm (0.62 inch)

Exhaust filter elements clogged?

If oil mist at the exhaust, and/or high oil consumption are signs that the exhaust filters are clogged

The exhaust filters must be replaced more often if subjected to increased oil cracking products at high operating temperatures and/or aggressive media

Exhaust deflector removed by unscrewing the bolt?

Both demister support units removed by unscrewing the nuts?

Exhaust filters removed individually?