Five common failures and maintenance methods for high and low temperature test chambers
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1. The temperature is not reduced or the temperature cannot be reduced. 1 The compressor is damaged or not opened. Replace the compressor and check whether the compressor circuit and the control components are damaged. 2 The refrigerant leaks. Use nitrogen leak detection method to find the leak point, welding, pumping Vacuum, add refrigerant, re-commission 3 solenoid valve operation is abnormal, replace the solenoid valve, check the solenoid valve control line 4 capillary blocked, replace the capillary, replace the dry filter, purge the condensate system impurities with nitrogen, add the refrigerant debugging 5 condenser Freeze, heat up and dry the inside of the box, reduce the temperature 2, do not heat up or heat up to less than 1 heating pipe damage (replacement can be)
2 Solid state relay damaged, replace it 3, humidity does not rise or humidity 1 humidified tube is damaged, replace 2 to control the level of humidification float float is not floated 3 wet solid state relay is damaged 4, humidity shows 100% RH
1 Abnormal gauze, replace the gauze 2 Refrigeration system failure, check the cooling system 3 water system water supply anomalies, check the water system 5, high and low temperature alternating damp heat test box main power switch trip 1 device total power exceeds the power switch total current, replace the appropriate power supply Switch 2 equipment leakage, check equipment, compressors, motors, heating tubes, humidifiers, condensers, fans, transformers, switching power supplies, pumps and other components insulation resistance and leakage current