[universal machine] fault phenomenon: the screen does not light up

Fault causes: (1) the power supply is not powered on; (2) The safety tube on the digital display meter is damaged;

Troubleshooting: (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 tube;

[universal machine] fault phenomenon: the oil pump does not start

Fault causes: (1) the power supply lacks phase and the voltage is abnormal; (2) Oil pump motor is damaged due to short circuit; 3) The digital display meter has no output voltage;

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

[universal machine] fault phenomenon: powerless value display

Fault causes: (1) pressure sensor connector falls off; (2) The digital display meter is damaged; (3) The pressure sensor is damaged;

Troubleshooting: (1) reconnect the pressure sensor; (2) Replace the digital display meter; (3) Replace the pressure sensor;

[universal machine] fault phenomenon: no displacement display

Fault causes: (1) the wire drop on the displacement sensor falls off; (2) The digital display meter is damaged; (3) The displacement sensor is damaged;

Troubleshooting: (1) reinstall the wire drop; (2) Replace the digital display meter; (3) Replace the displacement sensor;

[universal machine] fault phenomenon: unable to reach full scale

Fault causes: (1) hydraulic oil is not filled up; (2) Oil leakage at pipeline interface; (3) Oil leakage of oil return valve; (4) The oil delivery valve is stuck;

Troubleshooting: (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] fault phenomenon: oil leakage at the piston

Fault causes: (1) the machine is not placed stably and the piston side is low; (2) The sealing ring is damaged;

Troubleshooting: (1) level the equipment as required; (2) Replace the sealing ring;

[universal machine] fault phenomenon: the center beam cannot be lifted

Fault cause: (1) the digital display meter has no voltage output of beam reducer; (2) The beam reducer motor is damaged; (3) Two lead screws are unbalanced;

Troubleshooting: (1) replace the digital display meter; (2) Replace the beam reducer; (3) Please contact the manufacturer for maintenance;

[universal machine] fault phenomenon: abnormal noise during tensile test

(1) there is a fault in the contact between impurities on the upper beam or the middle beam of the machine; (2) There are scratches on the back plane of the card board;

Troubleshooting methods: (1) remove the clamping plate and clean up impurities; (2) Polish the back plane of the chuck with fine sandpaper;

[universal machine] fault phenomenon: low yield stress

Fault cause: misjudgment caused by slipping between jaw and test piece;

Troubleshooting: replace the jaw;

[universal machine] fault phenomenon: the digital display meter shows that the force is overloaded or the sensor is not installed

Fault cause: poor contact of sensor connector;

Troubleshooting: reconnect the sensor connector;

[universal machine] fault phenomenon: the oil pump has noise

Fault cause: the connecting screw between oil pump and motor is loose;

Troubleshooting: tighten the screws;

[press] fault phenomenon: the screen does not light up

Fault causes: (1) the power supply is not powered on; (2) The safety tube on the digital display meter is damaged;

Troubleshooting: (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 tube;

[press] fault phenomenon: unable to connect the controller

Fault causes: (1) abnormal power on of controller; (2) Poor connection of serial port connection; (3) The computer serial port is damaged; (4) The serial port of the controller is damaged;

Troubleshooting: (1) restart the controller; (2) Reconnect the serial port connection; (3) Maintain the serial port of computer host; (4) Replace the controller;

[press] fault phenomenon: the oil pump does not start

Fault causes: (1) the power supply lacks phase and the voltage is abnormal; (2) Oil pump motor is damaged due to short circuit; (3) The digital display meter has no output voltage;

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

[press] fault phenomenon: weak value display

Fault causes: (1) pressure sensor connector falls off; (2) The digital display meter is damaged; (3) The pressure sensor is damaged;

Troubleshooting: (1) reconnect the pressure sensor; (2) Replace the digital display meter; (3) Replace the pressure sensor;

[press] fault phenomenon: no change in pressure value

Fault causes: (1) controller crashes; (2) Poor contact of sensor wire; (3) Controller a / D sampling is faulty;

Troubleshooting: (1) restart the controller; (2) Reconnect the sensor cable; (3) Please contact the manufacturer for maintenance;

[press] fault phenomenon: unable to reach full scale

Fault causes: (1) hydraulic oil is not filled up; (2) Oil leakage at pipeline interface; (3) Oil leakage of oil return valve; (4) The oil delivery valve is stuck;

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

[press] fault phenomenon: oil leakage at the piston

Fault causes: (1) the machine is not placed stably and the piston side is low; (2) The sealing ring is damaged;

Troubleshooting: (1) level the equipment as required; (2) Replace the sealing ring;

[press] fault phenomenon: the oil pump has noise

Fault cause: the connecting screw between oil pump and motor is loose;

Troubleshooting: tighten the screws;

[press] fault phenomenon: piston does not rise

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

Troubleshooting methods: (1) adjust the initial opening of the valve port; (2) Replace the digital valve; (3) Replace the pressure reducing valve;

[press] fault phenomenon: the rising speed of piston is too fast

Fault causes: (1) the initial opening of valve port is too large; (2) The digital valve is stuck;

Troubleshooting methods: (1) reduce the initial opening of digital valve; (2) Replace the digital valve;