KSB pumps were installed and will be realigned , the pumps are Multitec Horizontal Booster pumps , at the O&M manual it was indicated that : "The radial and axial deviation between th two coupling halves must not to exceed 0.1mm".From your experience of pumps alignment can you tell me what are the best tools that you recommend for aligning the pumps and what is the accuracy needed for the tools ??Does it need to be lazer alignment tools ??any inputs about the KSB pumps alignment are highly appreciated ..Laser alignment would be best if you have availability to the tools. The only problem with dial indicators is the skilled mechanic is not always readily available. Ultimately, laser alignment and if possible dial indicator verification to follow.
 

pumpking (Chemical) 19 Feb 08 16:34 
Painfull at the time to arrange perhaps if you dont have the equipment or technicians, but laser alignment is the best method and is proved to give long term extension to bearing life reducing long term maintenance costs and time.There are laser alingment companies and/or pump repairers specialising in laser alignment of rotating equipment, and would suggest you try some of these local to you. 
 
The use of dial indicator and a straight edge have been in use since not longer after the Ark was built and really take some beating as far accuracy are concerned. Sure you need a skilled operator to use it correctly but this also applies to Magnetic pumps laser alignment which is only another piece of equipment and useless in the wrong hands.Besides the initial alignment you also need to check once all pipe loads are in place, after the pump comes up to operating temperature as well as a week or two after start-up. It is worth the effort to put time into correct alignment as it will ensure long life of bearings, seals,coupling life and less vibration of the pump and pipework.

2011-09-02

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