Answer - The reason why the constant temperature and humidity box does not cool
As customers tend not to have refrigeration equipment under constant temperature and humidity conditions, here today the following suggestions are made for your reference Joint research only.
Answer: Due to the temperature of the refrigeration compressor, during the test operation, it can not be determined whether it is started from the main line, which may be the operation process of the compressor environment test equipment, the normal performance line system is also a problem.
No problem, check the electrics and the cooling system. Check the two lower refrigerant compressors firstsensors driving R23 (level) to drive the outlet pressure and temperature than the normal suction rate, time lower, suction pressure conditions, refrigerators and freezers underdosed. Because the main drive of the compressor sucks R23, the exhaust pipe and road are not high, low suction pipe temperature (frost), which also explains the main drive of the refrigerant R23.
Analysis: I do not know, the test case, the reason for the failure of the chiller has two process controls to further confirm the failure.
Auxiliary units, on the other hand, have a higher cooling rate, and the work of two groups of units at the initial stage is still a working group of 2 units. For temperature stability, the auxiliary unit stops the previous working unit to maintain temperature stability. If you drive the R23 gearbox, the device is unlikely to be affected by any effects, since the cooling process affects two working units, sothat such a phenomenon does not occur, the cooling speed is stable, and the temperature of the instruction is reduced. In the first stage, temperature maintenance stops the working unit, the auxiliary equipment has no cooling effect, the air test slows down, when the temperature rises to a certain level, the auxiliary unit of the control system starts, the air temperature falls to the value (-55 degrees Celsius) and the Auxiliary unit and stops working, so it again does the one shown in FIG. 03 exhibits the malfunction phenomenon shown.
Therefore, it was confirmed that the cause of the failure is low temperature (production driving with R23 refrigerant leakage during driving).
To check the cooling system, JianLouYi uses soap and water, heat, general inspection methods, combined with a solenoid valve to dry a thin coal seam of 1 cm. To replace the solenoid valve, fill in the fluorNormal operation of the system. on the groundBased on the above, it can be seen that the phenomenon of failure analysis and judgment is basically the first electrical analysis and judgment after freezing, familiar with and understanding of the principles, test cases and work process, and analyze the failure of the fault.
According to the above analysis, working principles and test cases can quickly become and workflow test cases to solve problems in the management process. We hope that more equipment operators and maintenance personnel engaged in environmental management will promote the common development of environmental engineering.