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

In normal operating conditions, the belt has a lifetime of 30000 hours. Wear characterizes by slip, abnormal wear or cracks. In case of wear, the correct alignment of the pulleys has to be checked. Tolerance ±1.3 mm

A dismounted belt has to be replaced with a new one

Stretch the V-belts with the V-belt tension meter;

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

Remove the intake filter element from the housing

Clean the intake filter element in one of the following ways

▪ Hand washing: Soak and agitate element in a warm water and mild detergent solution. Allow adequate time for the element to air dry (24 hours minimum). Do not install a damp element. This will cause higher initial pressure loss and rapid dirt loading

▪ Compressed air cleaning: Using approximately 7 bar(e) (100 psi(g) or 5.25 Torr(e)), direct air flow at inside of element towards pleats. Blow off the outside of the element directing the air flow down to avoid embedding dirt in the media. Blow off the inside again to remove any dirt that might be on the clean side of the element

▪ Vacuum cleaning: Point the vacuum cleaner to the dirty side (outside of element) only, using a vacuum of approximately 100 mbar(a) (75 Torr(a)). A crevice tool is recommended

▪ Hand cleaning: Hold element down with one hand and move other hand across the fins in a strumming motion. This action will dislodge most of the dirt

The element is ready to be reused;

Warning: This procedure requires trained personnel with PPE!

Check recommendations on the motor supplier’s website

Motor condensate drain plug removed?

Sign off on the motor bearing replacement

Set the O-ring to 10 mm (0.39 inch) position

Place the tool on the centre of the longest V‐belt and mark the belt

Push the tool downward until you reach a 10 mm (0.39 inch) bending. The result of the measurement should be between 35 N and 58 N

Check the result of your measurement. Tighten the belt tightener to reach the table given value;