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Rotor pump common fault and troubleshooting
Rotor pump in normal use, the failure rate is very low. However, if due to improper operation or prolonged operation, there will be some loss or accidental failure. We have summarized some common faults and troubleshooting methods of rotor pump for user's reference. Fault phenomenon Cause of the malfunction Remedy Rotor pump does not run Motor power is not switched on Check the electrical control box reset device, fuse, circuit breaker, power supply Damage to the motor Replace the motor Decelerator repair or replacement Deceleration Bearing damage Replace the bearing rotor stuck Repair the rotor or rotor chamber and the chamber cover do not discharge, but the motor is running Motor Steering Contrary to steering mark, change the motor direction or use the inverter Adjust the motor Steering Gearbox Damage Repair or replace the gearbox Coupling damage Replace the coupling Inlet and Outlet Pipeline Valve Closed Open Inlet and Outlet Pipeline Valve Inlet and Outlet Pipeline Clogged Unblocking Inlet and Outlet No Feed Additive Material Safety valve is not in place or is continuously opened by foreign material Adjust or clean Large amount of air or pipe connections in safety valve pipe A gas leak phenomenon, plugging Rotor pump is functioning properly, but the flow is very small Speed ​​is too low Increase the speed of the return valve is opened Adjust the degree of opening of the return valve Safety valve is not adjusted in place, or caused by foreign bodies continue to open Adjust the safety valve open Pressure or cleaning safety valve inlet and outlet pipe valve opening degree Completely open the inlet and outlet pipe valves Pipe joints Leakage or damage Plugging or repairing Pipeline Pipeline filter blockage Cleaning to clear the pipeline Filter out of the pipeline pressure is too high Reduce the discharge pipe valve and elbow Increase the discharge pipe Diameter, consistent with the discharge interface of the rotor pump Addition of material Addition of material Discharge material Gasification phenomenon Filter, feed valve, feed pipe clogged Cleaning Dredge through the filter, feed valve, feed pipe Feeding pipe too Fine feed pipe is too long, the elbow, the valve too much Increase the feed pipe diameter, reduce the feed pipe length, reduce the elbow, the valve filter too fine Replace the filter with matching Feed pressure is too low Adopting high feed material Viscosity of material is too high, exceeding the capacity of the rotor pump to reduce the speed or re-select the appropriate rotor pump Rotor pump during operation Excessive noise during the operation Damage to the gear unit Repair or replacement of the gear unit Rotation speed too high Decrease of speed Bearing damage Replace bearing coupling dislocation re-adjust the coupling, so that the shaft to maintain the same axis damage Replace the coupling rotor and the rotor, rotor chamber, cover rub collision Repair rotor, rotor chamber, room Cover the pressure of the discharge pipe is too high Decrease the pressure of the discharge pipe The viscosity of the material is too high Decrease the speed or re-purchase the rotor pump with matching material Temperature of the material is too high Reduce the temperature of the material Mix the gas in the material Expel the gas in the liquid Vibration is too large Suitable for fixed intake and outlet pipe leakage Mechanical seal surface damage Replace the mechanical seal chamber cover and rotor chamber O-ring damage Replace the O-ring frame Oil seal damage Replace the skeleton Seal too much oil into the oil drain to the required amount of lubricant or Run for a period of time, so that the oil is no longer overflow from the synchronous gear box or reducer breathable nut Motor power consumption (overheating, current, trip, stop) material viscosity is too large In the pump rated range, increase the motor power Export pressure is too large Reduce system pressure or increase the material diameter High viscosity of the material temperature is too low Heating material, using insulation pipe or increase the diameter During the shutdown, material condensation in the pipe wall or pump body using insulation pipe, the installation of soft Start the drive, install the recycle system to bypass the system, flush the pipe material with the non-condensing material to the surface of the pump chamber and the rotor A large gap of the rotor and pump chamber