Fault phenomenon: the pump can not discharge 1, the cause of the malfunction: a, the opposite direction of rotation; b, suction or discharge valve is closed; c, the inlet without material or pressure is too low; d, viscosity is too high, Troubleshooting: a, confirm the direction of rotation; b, confirm whether the valve is closed; c, check the valve and pressure gauge; d, check the liquid viscosity, low speed operation by the speed ratio of the flow rate is there, if the flow, the inflow is insufficient. Symptom two: the pump flow less than 1, the cause of the malfunction: a, suction or discharge valve is closed; b, the inlet pressure is low; c, the outlet pipe plugging; d, packing box leakage; e, low speed. 2, troubleshooting: a, to confirm the valve is closed; b, check the valve is open; c, to confirm the discharge is normal; d, tighten; a large number of leaks affect production, should stop running, disassembly inspection; Axis actual speed; Symptom 3: Abnormal sound 1, Malfunction reasons: a, the coupling eccentric or poor lubrication b, motor failure; c, reducer abnormalities; d, shaft seal installed poor; e, shaft deformation or wear . 2, troubleshooting: a or find filling grease; b, check the motor; c, check the bearings and gears; d, check the shaft seal; e, parking disintegration inspection. Symptom 4: the current is too large 1, the cause of the malfunction: a, the outlet pressure is too high; b, the melt viscosity is too large; c, shaft seal assembly bad; d, shaft or bearing wear; e, motor failure. The valve inlet pump industrial washing machine 2, troubleshooting: a, check the downstream equipment and pipelines; b, test the viscosity; c, check the shaft seal, appropriate adjustments; d, after parking check, hand crank car is overweight; . Fault phenomenon five: the pump suddenly stopped 1, the cause of the malfunction: a, power failure; b, motor overload protection; c, coupling damage; d, the outlet pressure is too high, interlocking reaction; e, Shaft and bearing stuck stuck. 2, troubleshooting: a, check the power; b, check the motor; c, open the safety cover, disk car inspection; d, check the instrument interlock system; e, after parking, reversing confirmation; More gear pump knowledge, please see: Fluid Encyclopedia?
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