General Description Repairs
8 Product Manual IRB 640
Flange Seals and Static Seals
11. Check the flange surfaces. They must be even and free from pores. It is easy to
check flatness using a gauge on the fastened joint (without sealing compound).
12. Differences in surface level or the presence of burrs due to incorrect machining
are not permissible. If flange surfaces are defective, the parts must not to be used,
because leakage could result.
13. The surfaces must be properly cleaned in accordance with ABB ROBOTICS
PRODUCTS recommendations.
14. Distribute the sealing compound evenly over the surface, preferably with a brush.
15. Tighten the screws evenly when fastening the flange joint.
O-rings
16. Check the O-ring grooves. The grooves must be geometrically correct and free
from pores and contamination.
17. Check the O-ring with regard to surface defects, burrs, shape accuracy, etc.
18. Ensure that the correct O-ring size is used.
19. Tighten the screws evenly when assembling.
20. Defective O-rings and O-ring grooves must not be used.
21. Fitting defective parts will result in leakage. Grease the O-ring with lubricant
before mounting.
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