Injection molding machine hydraulic pumps for common failures and maintenance –
Fault Reason Fault rule A. No oil discharge 1. Turn the wrong direction (positive, anti-clockwise) Stop, correct direction of motor rotation. 2. Pump not rotating Motor Power supply Whether the power to confirm or bond couplings are damaged. 3. Shaft fracture, the rotor does not rotate Repair of pumps, motors back to confirm whether the high speed, the axis is aligned center 4. Suction pipe blocked Check suction line 5. Inhaled blocked oil filtering network Clean Inhalation of oil filtering network 6. Insufficient fuel tank filter through traffic Replacement of a larger network of suction filter oil, at least the pump flow rate 2.2 times per minute 7. Oil? Through high Replace the old oil viscosity (based on sample) 8. Rotational speed is not enough Back by a minimum speed of the pump motor back speed selected (based on samples) 9. Suction tube gas-tight enough Check suction piping 10. Fuel tank above the filter surface in the oil Oil to the oil above the benchmark level meter 11. Canal in the rotor blade can slide out from the Pump repair B. noise level 1. Suction pipe is too small Inhale Vacuum Of at least 200 mmHg less 2. Inhalation oil filtering network congestion Clean Inhalation of oil filtering network 3. Inadequate flow through the fuel tank filter Inhalation filter oil change more network traffic per minute pump at least 2.2 times more 4. Oil? Through high Replace the old oil viscosity (based on samples) 5. Using double pump suction pipe error Correct piping 6. Suction line of air suction Locking pump inlet flange, and check Other Suction pipe is locked 7. Breathe air shaft seals Department Check whether the concentric axis 8. Tanks oil bubbles Back to the piping configuration and length is normal 9. Fuel tank on top of the filter surface in the oil Fuel to oil level above the reference point account 10. Canal in the rotor blade can slide out from the Pump repair 11. Couplings noise Replacement of couplings and check whether the concentric axis 12. Fuel tank air filter blockage or size too small Clean Air filter air filter or replace the appropriate specifications 13. Back to high speed Pump speed according to the maximum return back to select the motor speed (based on samples) 14. Settings Pressure High Inspection Pressure Table whether Pressure Normal set 15. Pump Bearing Damage More pump and check whether the concentric axis 16. Cam ring wear Department of abnormal wear dirty oil cleanliness. 17. Pump cover tightly bad Torque wrench to assemble the pump again 18. Pumps serious wear and tear (cam ring, rotor, manifold, leaves) Oil Cleanliness dirty, replace the oil pump and hydraulic C. inadequate flow 1. No oil discharge A reference approach 2. Inhalation Vacuum Through large, caused by inhaling air cavitation Check inhalation of oil network, make use of hoses or straight pipe 3. Rotors, shunt board wear Pump repair 4. Pump tight cover bad Torque wrench to re-assemble the pump 5. Oil? Too low in Replacement of oil cooler installed D Seal Ring leakage Seal Circle Office, oil spill Replace Seal Ring
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