As a type of testing equipment, the high-pressure and low-pressure test chamber may encounter various problems during use. Here are some common problems and their solutions:

　　1. The device cannot start normally

　　Problem descriptionThere is no response after opening.solutionFirstly, check if the power supply voltage is within the specified range, and confirm that the voltage requirement is 380 volts. If it does not meet the requirements, it is necessary to use a regulator or have a professional handle it. At the same time, check if the low-temperature compensation switch is turned on. If the switch is abnormal, the heating wire of the low-temperature compensation cannot be connected.

　　2. Uneven temperature

　　Problem descriptionThe temperature in the test chamber is uneven.solutionIt may be caused by heating tube malfunction or poor heat dissipation of the condenser. It is necessary to check whether the heating tube and condenser are working properly, and clean the radiator in a timely manner.

　　3. Poor cooling effect

　　Problem descriptionThe refrigeration effect of the test chamber is poor.solutionIt may be caused by insufficient refrigerant or compressor failure. It is necessary to check whether the refrigerant pressure is normal and whether there are any abnormal sounds or heating conditions in the compressor.

　　4. Decreased sealing performance

　　Problem descriptionThe sealing performance of the test chamber has decreased.solutionIt may be caused by damage to the sealing strip or aging of the sealing ring. It is necessary to replace the sealing strip or ring and check the sealing performance of the equipment.

　　5. Difficulty opening the door

　　Problem descriptionIt is difficult to open the test chamber during the rainy season or summer.solutionDue to the condensation of moisture on the contact surface between the door and the door frame, it is difficult to open the door. The solution is to regularly clean the door cover with soapy water to maintain its smoothness and elasticity, while also applying a small amount of lubricating oil.

　　6. Vacuum control issues

　　Problem descriptionUnable to achieve high-precision vacuum control.solutionAdopting two independent high-precision PID program control loops for upstream and downstream control, based on high-precision capacitance vacuum gauges of different ranges, the intake electric needle valve and exhaust electric ball valve are adjusted separately to achieve high-precision vacuum pressure control.

　　7. Circuit malfunction

　　Problem descriptionThe high, low temperature, and low pressure test chamber cannot function properly.solutionCheck the circuit, fuses, switches and other components of the equipment, identify the fault point and carry out repairs.

　　8. Component damage

　　Problem descriptionSome components of the high, low temperature, and low pressure test chamber are damaged.solutionReplace damaged components such as heaters, temperature controllers, condensers, etc. to ensure proper operation of the equipment.

　　9. Parameter setting error

　　Problem descriptionDue to incorrect parameter settings, the device is unable to function properly.solutionAdjust the equipment parameters according to the equipment manual or hire professional maintenance personnel.

　　10. Professional maintenance is required

　　Problem descriptionThe above methods cannot solve the problem.solutionPlease have maintenance workers with relevant maintenance experience and skills to carry out repairs.

The above are some common problems and solutions for high-pressure and low-pressure test chambers, hoping to provide assistance for the use and maintenance of high-pressure and low-pressure test chambers.