We strongly advise that with long coupled pumps they should be checked for alignment regularly. At a minimum once a year dependent on usage. Pumps out of the required tolerances will cause a disproportional load on the coupling, bearing, pump and motor. If not treated and managed this will cause fatigue and early failure of the component parts. Regular pump maintenance is recommended, and will prove considerably cheaper in the long run than paying for repairs, should the equipment eventually fail.