Pump installation and precautions for use

Pump installation requirements: 1, the installation height should be less than the suction allowed to vacuum height minus the loss of water in the pipeline. Under normal conditions, the installation height of 10.3- (NPSH) r-0.5-hw, in order to have suction pipe hydraulic loss 2, the pump outlet flange should be installed on the pressure gauge, in order to observe and control the pump operating conditions, Pipe weight should not be borne by the pump 3, the pump should be installed in a ventilated place, outdoor installation should be added protective cover to avoid sun exposure and rain pump installation: 1, before installation, should check whether it is in the process of deformation or Damage, fasteners are loose or off; 2, the installation configuration inlet and outlet pipes: pipe installation should be as much as possible to reduce the pipeline fluid resistance principle. After the inlet pipe should be added filter to prevent hard impurities or hard solids into the pump cavity damage seal or water leaves, leading to water leakage or abnormal: inlet pipe should be added check valve to facilitate Water; 3, wiring: the nameplate must be correct wiring, wiring, the terminal must be solid, not allowed to loose, otherwise, will result in poor contact led to lack phase burning machine. The wiring must be used overload protection device, and according to the motor nameplate current requirements to adjust the size of the protection device settings; 4, press the turn method: vertical pump; 5, suction water level higher than the pump: single pump And double pump in series or in parallel; 6, the suction level is lower than the pump: such as pool pumping water; 7, lying pump directly take over the installation. Pump start to start: 1, the pump should be opened before starting the inlet valve and pump exhaust valve plug, close the outlet gate valve. Pump cavity filled with water, so that the pump can start normally: 2, jog motor, from the motor side, check the steering direction is consistent with the arrow. Pump operation: 1, the pump started gradually open the outlet gate valve, adjusted to the desired conditions point; 2, the pump in the running process, the operating conditions of traffic flow is not more than the performance of the parameters given in the table flow point flow Is appropriate, while the motor running current shall not exceed the rated current; 3, shutdown sequence: close the outlet pipe valve - motor - pressure gauge. Pump maintenance: 1, should always check the pump is running smoothly. The mechanical seal wear and leakage, timely replacement of seals to prevent pressure water into the motor; 2, always check the motor housing temperature changes, the maximum temperature should not exceed 85 degrees Celsius, found that the temperature is too high, should immediately stop checking; 3, the pump for a long time off, should drain net water, remove rust scale, coated with anti-rust grease for the next re-use.