Self-priming centrifugal pump mechanical seal installation instructions

Should be inspected carefully before they are installed self-priming centrifugal pump mechanical seal parts quantity is enough, there is no damage to the sealing element, especially the dynamic and static ring bruised, defects such as cracks and deformation.If there is a problem, need to repair or replace the new spare parts.Check the shaft sleeve or gland chamfer whether appropriate, if do not conform to the requirements must be.
Mechanical seals assembly interface of each component and its related before installation must clean with acetone or anhydrous alcohol clean.The installation process should be kept clean, especially the dynamic and static ring should be without impurities, dirt and auxiliary seal components.Dynamic and static ring surface coated with a layer of clean oil or turbine oil.
Centrifugal pump to tighten gland should be performed after the coupling is find.Bolt tightening up should be uniform, prevent gland section deflection, with a feeler gauge or special tools to check each point, the error is not more than 0.05 mm.Check fit clearance of gland with shaft or sleeve diameter (and concentricity), uniform must ensure that all round, with a feeler check each point tolerance is not more than 0.10 mm.
Spring compression quantity according to provisions, there is no too big or too small, requirement of error of plus or minus 2.00 mm, will increase the section pressure, acceleration of wear and tear.Starts to cause low pressure than not sealing effect, after the spring loaded inside the spring seat flexible to move.When using a single spring to pay attention to the helical spring, spring XuanXiangYing and axis of rotation in the opposite direction.Ring is installed must stay flexible mobile, will ring after pressure to the spring should be able to bounce back automatically.