Excluded from analysis to analysis and electric pump motor to overheat and exclusion for the use of a motor-driven pump to pump in terms of common faults, the most common fault is the motor overheating. The main cause of the motor overheating due to high or low voltage, transmission poor ventilation system malfunction or failure caused by overheating of the motor unit. Cause motor overheating severe burn insulation, broken rotor bars from happening. Therefore, when found in the use of pneumatic motor overheating other power means, the downtime. Voltage causes the motor to overheat the motor supply system to deal with checks solved by restoring the stability of power supply boiler feed pump motor overheating fault. In addition to poor transmission will cause the motor to overheat 1.5GC-5X5 boiler feed pumps, due to the drive motor and the pump room caused by poor motor load is too large, the phenomenon appears small horse-drawn carts, motor overload is the temperature. Such cases must be timely maintenance, resulting in unit failure. The traditional system to the pump motor and conduct a thorough investigation, the common tradition is mainly due to poor transmission rotating bearing oil, bearing damage caused by. Find out where the point of failure can be replaced or lubricated. Since one of the most common fault with subsystem failures caused by motor overheating, which is mainly due to the fan is damaged, ventilation channels blocked, bearing wear and other reasons that the ventilation system should not complete the work undertaken, resulting in motor overheating and serious will burn coil. Such cases must be itemized investigation to identify the cause, unobstructed ventilation channels, fan repair, replacement of bearing failure can be solved. The main structure of the pump inlet, outlet are vertically upward, the rotor axial force to balance the balance disc. Packing seal for boiler feed pumps, but also for the mechanical seal. Rotor bearing only DG85-80, DG85-67, DG155-67 sliding bearings, lubrication, other pumps are used rolling bearings. 1, the pump casing parts: pump housing part by bearing body, front, middle, rear section, the guide leaves, bolted into the whole front line was horizontal suction mouth, posterior segment vertical and horizontal outlet. 2, the rotor part: some of the major axis of the rotor and impeller mounted, bushings, balance disc and other parts of the shaft components. Parts shaft sleeve nut flat keys and make it with the shaft into one. Entire rotor from both ends of the bearing in the pump housing, number of impeller rotor section is based on the number of stages depending on the pump. 3, bearing parts: The pump bearings have two sliding bearings and rolling bearings, according to different models depending 1.5GC-5X6 boiler feed pumps, are not subjected to axial force. Pump in operation should be allowed in the pump housing rotor section axial swimming 1.5GC-5X3 boiler feed pumps, can not be used radial ball bearings 4, pump seal: Pump front, middle, sealing surface between the rear section are molybdenum disulfide grease seal between the rotor and the fixed portion by portion of the seal ring, the guide vane sets, packing and other sealing, when should the seal ring and vane wear sleeve has affected the work and performance of the pump to be replaced. This type of pump is used, the position of the packing rings placed to the right, the distribution of fillers and packing ring pumps is shown in Table 2, the tightness of the packing must be adequate to bleed the liquid can preferably drop by drop. 5, curve explanation: the graph is single stage performance, the nominal diameter of the impeller D2 = 134㎜, speed n = 2950r / min. When the series progression increases in proportion to increase lift, constant flow. For example: three lift lines in the graph line lift Richard multiply by 4 3,4 level, the rest on 1.5GC-5X3 boiler feed pumps, boiler feed pumps, boiler water circulation pump is 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!