Installation and Commissioning

RepairsGeneral Description11. Normally the bearings should not be completely filled with grease. However, ifthere is space on both sides of the bearing, it can be filled completely with greasewhen it is fitted, as surplus grease will be released from the bearing on start up.12. 70-80% of the available volume of the bearing must be filled with grease duringoperation.13. Make sure that the grease is handled and stored correctly, to avoid contamination.1.3.2 Seals1. The most common cause of leakage is incorrect mounting.Rotating seals2. The seal surfaces must be protected during transportation and assembly.3. The seals must either be kept in their original packages or be protected well.4. The seal surfaces must be inspected before mounting. If the seal is scratched ordamaged in such a way that it may cause leakage in the future, it must be replaced.5. The seal must also be checked before it is fitted to ensure that:• the seal edge is not damaged (feel the edge with your finger nail),• the correct type of seal is used (has a cut-off edge),• there is no other damage.6. Grease the seal just before it is fitted – not too early as otherwise dirt and foreignparticles may stick to the seal. The space between the dust tongue and sealing lipshould 2/3-filled with grease of type 3HAB 3537-1. The rubber coatedexternal diameter must also be greased.7. Seals and gears must be fitted on clean workbenches.8. Fit the seal correctly. If it is fitted incorrectly, it may start to leak when pumping.starts.9. Always use an assembling tool to fit the seal. Never hammer directly on theseal because this will cause it to leak.10. Use a protective sleeve on the sealing edge during assembly, when sliding overthreads, key-ways, etc.Flange seals and static seals11. Check the flange surfaces. The surface must be even and have no pores. Theevenness can be easily checked using a gauge on the fitted joint (without sealingcompound).Product Manual IRB 1400 7