Common faults and treatment techniques of Chigo screw air compressors: common faults and treatment of starting/jumping, causes and treatment of failure? Fault phenomenon: The running indicator does not light up when the air compressor is started and the main motor is not started. Cause analysis: 1) The fuse burned; 2) Protection relay action; 3) Starting relay failure; 4) Poor contact of the starting button; 5) The voltage is too low; 6) Motor failure; 7) Body failure; 8) Underphase protection relay action; 9) After the light and heavy fault alarm of the air compressor, it is not reset. Treatment method: 1) replace the new fuse 2) check the proofreading relay; 3) Check the repair start button after checking that the power supply is normal; 4) Check the recovery power; 5) Overhaul and eliminate motor failure; 6) Check the cause of the body failure and eliminate 7) Check the power supply and motor phase sequence; 8) Reset alarm signal.
　　
　　Causes and treatment of tripping shutdown? Fault phenomenon: one or more air compressors trip and stop during normal operation, or the air compressor tripped and stopped within a short period of time after starting. Cause analysis: 1) abnormal motor voltage and power supply voltage; 2) The exhaust pressure of the unit exceeds the rated pressure, and the motor overload causes the motor thermal protection action; 3) The lubricating oil specification is incorrect, the lubrication effect is poor, and the motor overload causes the motor thermal protection action. 4) The oil fine separation group is blocked (high lubricating oil pressure), causing the protection action of the oil fine separator pressure difference, or the motor overload causes the motor thermal protection action; 5) Compressor body failure, such as rotor carbon deposits, friction, entering foreign matter, etc.; 6) Poor wiring, loose wiring, contactor failure; 7) High exhaust temperature failure; 8) Oil shut-off solenoid valve failure; 9) Check whether the pressure setting is reasonable. Learn more about Zhigao screw air compressor, come to our Hunan Ruisheng Electromechanical Equipment Co., Ltd., our official website is www.hnzega.com.
　　
　　Treatment method: 1) Check the motor power supply and voltage; 2) Check the pressure gauge, if the set pressure is exceeded, adjust the pressure switch; 3) Check the oil number and replace the oil product; 4) Replace the oil fine separator; 5) The hand disc rotates, if it cannot be rotated, the host is repaired, and the host failure during the shelf life of the equipment is contacted by the manufacturer to deal with it; 6) Overhaul or replacement; 7) Check the cooling water and clean the cooler; 8) Clean or replace the oil-off solenoid valve; 9) Check whether the upper limit setting of the pressure switch is too low, or the upper limit setting of the pressure switch is lower than the shutdown pressure set by the air compressor joint control cabinet.
　　
　　The reasons and treatment of running empty vehicles for a long time without stopping? Fault phenomenon: The air compressor is empty for a long time, but the motor does not stop. Cause analysis: the most likely cause is the failure of the time relay, the screw compressor is generally set to 15~20min empty after the motor stops, if it has been empty but the motor does not stop, it should be checked first. Treatment: check the control loop, adjust the time relay.
　　
　　Common faults and handling of loading/unloading: Causes and treatment of failure to run at full load? Fault phenomenon: After the air compressor starts, the intake valve servo cylinder cannot be fully opened. Cause analysis: 1) pressure switch failure; 2) Three-way solenoid valve failure; 3) The intake valve is poorly operated; 4) Discharge solenoid valve failure; 5) Poor operation of pressure maintenance valve; 6) Control pipeline leakage. Treatment: 1) Check and replace the pressure switch; 2) Check and replace the three-way solenoid valve; 3) Inspection and treatment after disassembly; 4) Check and replace the discharge solenoid valve; 5) Check whether the valve seat and check valve plate are worn after disassembly; 6) Check the leakage location and post-treatment. What are the reasons why it cannot be loaded during operation and how to deal with it? Fault phenomenon: the intake butterfly valve cannot be opened, the servo cylinder adjustment mechanism does not operate, the cause analysis: 1) The intake butterfly valve mechanism is faulty, such as loose connecting rod bolts; 2) Wear and leakage of servo cylinder diaphragm; 3) The loading solenoid valve is damaged; 4) The failure of the discharge solenoid valve makes the control gas vent; 5) There is leakage in the water filter cup or control gas line; 6) The capacity regulating valve is blocked or faulty; 7) The pressure switch is set incorrectly or drifts after setting. Treatment: 1) Eliminate the failure of the butterfly valve mechanism or replace the butterfly valve; 2) Replace the servo diaphragm; 3) Eliminate the failure of the loading solenoid valve or replace the loading solenoid valve; 4) Eliminate the fault of the discharge solenoid valve or replace the discharge solenoid valve; 5) Replace the water filter cup or eliminate leakage; 6) Replace or clean the capacity regulating valve; 7) Replace or reset the pressure switch.
　　
　　Why can't I uninstall during operation and what should I do? Fault phenomenon: The working pressure exceeding the quota during operation continues to operate, or continues to rise to the safety valve operation. Cause analysis: 1) The pressure switch is set improperly or drifts after setting; 2) The intake valve is poorly operated; 3) If the discharge solenoid valve fails when the system stops using gas, the pressure will rise slowly; 4) Control loop failure. Treatment method: 1) Overhaul the pressure switch and replace it if necessary; 2) Add lubricating grease after disassembly; 3) Overhaul and replace the discharge solenoid valve; 4) Repair or replace.
　　
　　Causes and treatment of frequent addition/unloading? Cause analysis: 1) There is a leakage in the gas pipeline or equipment; 2) The upper and lower limit pressure difference setting of the pressure switch is too small; 3) Unstable air consumption; 4) The pressure maintenance valve spool is not tightly sealed and the spring is fatigued; 5) The upper limit of air compressor pressure is set low. Treatment methods: 1) Check the leakage location and eliminate it; 2) Reset (generally the upper and lower limit pressure difference is more than 0.1MPa); 3) Increase the capacity of the gas tank; 4) Overhaul or replace the valve core, replace the spring; 5) Reset the pressure switch.
　　
　　Overcurrent/overload common faults and treatment: the reasons and treatment of the operating current of the air compressor lower than normal? Cause analysis: 1) The air consumption is too large, and the air compressor operates in the low-pressure range; 2) The air filter is blocked; 3) The intake valve is poorly operated; 4) Improper adjustment of capacity regulating valve. Treatment methods: 1) Check the consumption and increase the compressor if necessary; 2) Inspection or replacement; 3) Disassemble and clean and fill with lubricating grease; 4) Reset the adjustment.