Vibration, deflection, transmission parts will wear a different mind, as there are stuck at start sealing surface phenomenon, transmission parts will bend or damage, but the heat generated by friction effect is often exacerbated by corrosion. Wear scar outer circumferential surface of the metal sheath may be sealed into the sleeve from the side of the solid particles caused ISG200-200A mechanical seal, it interferes with the ability of the seal follower. It may be skewed because of the different causes of heart. Metal in the process to change the color temperature, stainless steel should be used in the following note the color temperature. Yellowish ---- temperature 700 ~ 800 ℉ (about 370 ~ 432 ℃) temperature Brown ---- 900 ~ 1000 ℉ (about 486 ~ 540 ℃) temperature blue ---- 1100 ℉ (about 590 ℃) temperature black ---- 1200 ℉ (about 648 ℃) when the seal failure does not meet any of the above, the maintenance is more difficult, but several cases of leakage below for reference: must be checked before the pump starts: a All sealing system is connected fittings good mechanical seals, the system is in working condition. Inhalation valve should be open, until the liquid (medium) and then open the motor into the sealed chamber. b. the pump and seal chamber is filled with liquid. c. the sealed chamber Have exhausted air. Especially the double seal ISG200-200IA pipeline pump with sealing liquid, but should pay attention to air drained. d. Turning examination should feel there is resistance ISG200-250 mechanical seal, but should not have a heavy or wiring. 13, when the double mechanical seal work, isolation fluid pressure than the seal chamber pressure medium high 0.05-0.2MPa. 14, the relevant parameters: mechanical seal installation shaft (or sleeve) to be chamfered at the step 3 × 10 °, and the smooth transition, its roughness Ra≤1.6. Axis (or sleeve) surface roughness Ra≤1.6, runout ≤0.04mm, dimensional tolerances h6. Installation of mechanical seals and sealing cover secondary seal contact area of ??the surface roughness of the stationary ring Ra≤1.6, dimensional tolerances for H8, locating the vertical face of the shaft ≤0.04mm. ISG200-200A mechanical seals, mechanical seals, fire pump provided by Anguo Shi Yuan Pumps Limited. Anguo Shi Yuan Pump Co., Ltd. (www.shiyuanbeng.com) strong, credible, in Baoding centrifugal pumps and other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead you hand pumps and stone yuan into the brilliant, for a better future!