1,use after a period of time,found that the machine end face sealing leak,is caused by the machine sealing end surface wear,should adjust the ring,two screw loosening of the stainless steel screw,will ring forward appropriately,without Yin is preferred.wholesalemotor.blogspot.com 2,boot 8 to 16 hours a day for the best use of pump shall be equipped with spare parts with 24 hours of continuous use change regular maintenance,replacement period is generally two to three months,should be due for maintenance,does not affect production or continuous operation use may at any time for maintenance.3,pump maintenance methods: A. clean the pump casing and pump cover,impeller,both inside three phase asynchronous motor and outside www.facebook.com/guohong.trading dirt impurities,carefully check after washed clean,no damage may continue to use.B. removal and washing machine sealing combination of inside and outside dirt and impurities,check the motor lamination abrasion of the seals,wear or scratch the smaller usable fine metallographic sandpaper grinding on the tablet to level off after non-trace can continue to use,it can't take scar elimination must be replaced to grind.