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Introduction to troubleshooting method of combustion engine
Join time :2019-03-04 Article source :SWT hits:
The troubleshooting method of combustion engine:
 
 
Ignition failure under normal conditions, continuous start three burners, no ignition combustion should be judged as ignition failure, need to carry out the corresponding inspection to troubleshoot the failure. (the fan runs normally during ignition and the program is correct)
 
Ignition failure
 
Under normal conditions, continuously start the burner for three times, no ignition combustion should be judged as ignition failure, need to carry out corresponding inspection to troubleshoot the failure. (the fan runs normally during ignition and the program is correct)
 
1. Check whether the pressure of natural gas is kept at 3-5kpa or not due to the fault of the gas source. Treatment method; Adjust the pressure regulating valve of natural gas and set the pressure.
 
2. Check the size of the damper due to the failure of the damper. If the damper is too large, it is likely to fail to ignite for many times. Turn the damper down properly, but not completely.
 
3 ignition electrode or ignition transformer fault ignition transformer does not spark, or the ignition electrode is too dirty position is not correct, will appear ignition fault. Treatment method; Test whether the ignition transformer is ignited, clean the ignition electrode, and adjust the ignition gap to maintain 2-3mm.
 
4. When the gas valve set fails and fires normally, the valve set will open in time and the sound of opening can be heard. If it cannot be opened, the flame will not be established. Check the opening of valve coil and regulator.
 
Ignition controller malfunction all ignition procedures are sent out by the controller. The controller is damaged and cannot be normally ignited. Treatment method; Replace the controller.
Flameout failure when the burner is burning normally and suddenly extinguishing the fire is considered as flameout failure.
 
1. Fire extinguishing and treatment method after flame fluctuation caused by unstable air source; Adjust the pressure and restart.
 
When the flame detector fails to operate, the flame detection probe is grounded, or the normal flame cannot be detected when it is too dirty, and flameout occurs. Treatment method; Adjust probe position and clean probe surface. Restart.
 
Circuit fault power supply instability or phase loss, resulting in the process of flameout. Treatment method; Contact electrician to check power supply and wiring.
 
Burner does not start failure press the start button for a long time the burner does not start
 
1 the external temperature or pressure control of the external chain fault does not reach the starting limit; Check the temperature or pressure setting.
 
2. When the internal interlock of the burner fails to pass the excessively high or low air pressure, the air pressure switch is usually closed but not closed, and the damper mechanism is not in place, it will appear and be checked step by step.
 
3 program controller failure is not reset, reset again.
 
4, fan motor overheating protection, the thermal relay for reset.
 
5. Check whether the start button of the control cabinet is normal.
 

Circuit fault circuit check whether the test start signal is normal, whether the voltage insurance is normal. 

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Hotline:13264314609

Tel:0510-85100000

Add:No。 51, hutai road, north hutai industrial park, wuxi city, jiangsu province

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