Troubleshooting methods for common faults of Hydraulic Press:
1. The motor suddenly stops during operation. Possible causes:
- (1) Overheating, protector tripping;
- (2) Three phase voltage imbalance;
- (3) Parts are damaged.
Treatment method:
- (1) Manually press the blue key of the thermal protector to reset it, and check whether the motor operates under overload;
- (2) Check the three-phase voltage;
- (3) Replace accessories.
2. Unstable pressure, possible causes:
- (1) The machine has been used for too long, and the valve core of the oil pump pressure regulating valve is not sensitive;
- (2) Oil channeling of oil cylinder or solenoid valve, poor cooling of hydraulic oil;
- (3) Damaged accessories;
- (4) The hydraulic oil has been used for too long.
Treatment method:
- (1) Repair or replace the pressure regulating valve;
- (2) Repair or replace the solenoid valve and use the cooling water device to cool the hydraulic oil;
- (3) Replace the oil cylinder sealing ring;
- (4) Replace the same hydraulic oil.
3. Start the double button machine without action. Possible reasons:
- (1) The photoelectric eye safety guard has no induction;
- (2) Some limit switch input signals are not inductive;
- (3) The pressing time is too short;
- (4) Parts are damaged.
Treatment method:
- (1) Adjust the photoelectric eye safety guard to the ray so that the sensing green light is on;
- (2) Adjust cylinder and cylinder limit switch;
- (3) Adjust the holding down time;
- (4) Replace accessories.
4. Abnormal sound; Possible causes:
- (1) The machine has been used for too long, and some fasteners are loose;
- (2) The motor bearing makes a noise;
- (3) The oil pump makes a noise;
- (4) The suction oil filter is blocked and the oil level of the oil tank is too low.
Treatment method:
- (1) Tighten the fasteners with a wrench and other tools;
- (2) Repair or replace motor bearings and other accessories;
- (3) Repair or replace oil pump accessories;
- (4) Clean the oil filter and add oil to the upper limit of the oil standard.
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