Test Machine Common Problem

【Universal machine】Fault phenomenon: the screen does not light up

Reasons for failure: (1) The power supply is not powered on; (2) The fuse on the digital display is damaged;

Remedy: (1) Ask a professional electrician to check the power supply; (2) Check whether there is a short circuit in the circuit. If there is no short circuit, replace the fuse;

[Universal machine] Failure phenomenon: oil pump does not start

Causes of failure: (1) The power supply lacks phase and the voltage is abnormal; (2) The oil pump motor is short-circuited and damaged; 3) The digital display has no output voltage;

Remedy: (1) Ask a professional electrician to check the power supply; (2) Replace the oil pump motor; (3) Replace the digital display;

【Universal machine】Fault phenomenon: weak display

Reasons for failure: (1) The pressure sensor connector is off; (2) The digital display is damaged; (3) The pressure sensor is damaged;

Remedy: (1) Reconnect the pressure sensor; (2) Replace the digital meter; (3) Replace the pressure sensor;

【Universal machine】Fault phenomenon: no displacement display

Reasons for failure: (1) The wire on the displacement sensor falls off; (2) The digital display is damaged; (3) The displacement sensor is damaged;

Remedy: (1) Reinstall the wire drop; (2) Replace the digital meter; (3) Replace the displacement sensor;

【Universal machine】Fault phenomenon: unable to reach full scale

The cause of the failure: (1) The hydraulic oil is not filled up; (2) The pipeline interface is leaking; (3) The return valve is leaking; (4) The delivery valve is stuck;

Remedy: (1) Fill up the hydraulic oil; (2) Tighten the pipeline interface; (3) Replace the oil return valve; (4) Replace the oil delivery valve;

[Universal machine] Failure phenomenon: oil leakage at the piston

The cause of the failure: (1) The machine is not placed smoothly, and the piston side is low; (2) The sealing ring is damaged;

Remedy: (1) Adjust the level of the equipment as required; (2) Replace the sealing ring;

 

【Universal machine】Fault phenomenon: the middle beam cannot be raised and lowered
The cause of the failure: (1) The digital display has no voltage output of the beam reducer; (2) The beam reducer motor is damaged; (3) The two screws are unbalanced;

Remedy: (1) Replace the digital display; (2) Replace the beam reducer; (3) Please contact the manufacturer for repair;

【Universal machine】Fault phenomenon: abnormal noise during tensile test
The cause of the failure: (1) There are impurities in the contact surface of the card board and the upper or middle beam of the machine; (2) There are scratches on the plane behind the card board;

Remedy: (1) Remove the card board and clean up impurities; (2) Use fine sandpaper to polish the rear surface of the card board;

【Universal machine】Fault phenomenon: low yield value

The cause of the failure: the slip of the jaw and the test piece caused a misjudgment;

Remedy: replace the jaws;

【Universal machine】Fault phenomenon: The digital display shows the force overload or the sensor is not installed

Failure reason: poor contact of sensor connector;

Remedy: reconnect the sensor connector;

[Universal machine] Trouble phenomenon: the oil pump has noise

The cause of the failure: the connection screw between the oil pump and the motor is loose;

Remedy: tighten the screws;

[Press machine] Failure phenomenon: the screen does not light up

Reasons for failure: (1) The power supply is not powered on; (2) The fuse on the digital display is damaged;

Remedy: (1) Ask a professional electrician to check the power supply; (2) Check whether there is a short circuit in the circuit. If there is no short circuit, replace the fuse;

【Press】Fault phenomenon: Unable to connect to the controller

The cause of the fault: (1) The controller is powered on abnormally; (2) The serial port connection is poor; (3) The computer serial port is damaged; (4) The controller serial port is damaged;

Remedy: (1) Restart the controller; (2) Reconnect the serial port connection; (3) Repair the computer host serial port; (4) Replace the controller;

【Press】Fault phenomenon: oil pump does not start

Reasons for failure: (1) The power supply lacks phase and the voltage is abnormal; (2) The oil pump motor is short-circuited and damaged; (3) The digital display has no output voltage;

Remedy: (1) Ask a professional electrician to check the power supply; (2) Replace the oil pump motor; (3) Replace the digital display;

【Press】Fault phenomenon: weak display

Reasons for failure: (1) The pressure sensor connector is off; (2) The digital display is damaged; (3) The pressure sensor is damaged;

Remedy: (1) Reconnect the pressure sensor; (2) Replace the digital meter; (3) Replace the pressure sensor;

【Press】Fault phenomenon: No change in pressure value

Reasons for failure: (1) The controller crashes; (2) The sensor wire is in poor contact; (3) There is a problem with the controller A/D sampling;

Remedy: (1) Restart the controller; (2) Reconnect the sensor cable; (3) Please contact the manufacturer for repair;

【Press】Fault phenomenon: unable to reach full scale

The cause of the failure: (1) The hydraulic oil is not filled up; (2) The pipeline interface is leaking; (3) The return valve is leaking; (4) The delivery valve is stuck;

Remedy: (1) Fill up the hydraulic oil; (2) Tighten the pipeline interface; (3) Replace the oil return valve; (4) Replace the oil delivery valve;

[Press] Failure phenomenon: oil leakage at the piston

The cause of the failure: (1) The machine is not placed smoothly, and the piston side is low; (2) The sealing ring is damaged;

Remedy: (1) Adjust the level of the equipment as required; (2) Replace the sealing ring;

[Press] Trouble phenomenon: the oil pump has noise

The cause of the failure: the connection screw between the oil pump and the motor is loose;

Remedy: tighten the screws;

[Press] Failure phenomenon: the piston does not rise

Reasons for failure: (1) The initial opening of the valve port is too small; (2) The digital valve is stuck; (3) The pressure reducing valve is stuck;

Remedy: (1) Adjust the initial opening of the valve port; (2) Replace the digital valve; (3) Replace the pressure reducing valve;

[Press] Failure phenomenon: the piston rises too fast

Reasons for failure: (1) The initial opening of the valve port is too large; (2) The digital valve is stuck;

Remedy: (1) Reduce the initial opening of the digital valve; (2) Replace the digital valve;