If you are a cold user, if your cold storage has the following reasons, you can find out the reasons and solutions by following the table below to help you solve your needs. . . More detailed cold storage installation problems, please contact the customer service staff, free cold storage installation quotation program. Fault conditions main reason Method of exclusion Temperature does not drop 1, the library door is not strict 2, the cooling fan or the tube is too thick 3, the compressor is inefficient 4, improper adjustment of the expansion valve or ice block 5, the expansion valve is dirty or the filter is dirty 6, the refrigerant reduction in the system 7, oil on the inner wall of the pipe 1, adjust the Kumen gap 2, defrost or defrosting 3, repair or replace 4, re-adjust or replace the moisture absorbent 5, wash and wash 6, adding refrigerant 7, flushed with nitrogen Exhaust pressure is too high 1. The cooling water (wind) of the unit is insufficient. 2, the condenser dirt is too thick to affect the heat dissipation 3, there is air in the system 4, too much refrigerant 1. Identify the cause so that the air volume (water volume) is normal. 2, clean 3, let go of the air 4, release excess refrigerant Exhaust pressure is too low 1. Insufficient refrigerant 2, the discharge valve has a leak 1, supplemental refrigerant 2, repair or replace High suction pressure 1. The expansion valve is too open or the temperature package is not tight. 2, the compressor suction valve leaks 1, re-adjust 2, repair or replace Low inspiratory pressure 1. The expansion valve is too small or blocked 2. Insufficient refrigerant in the system 3, the refrigerant is not purely mixed with too much lubricant 1. Adjust and eliminate the blockage 2 make up 3, replace the refrigerant, check the oil separator oil return The compressor does not start 1, power outage, low voltage, circuit failure 2, the starter is in poor contact 3, the thermostat fails 4, the pressure controller is out of balance or malfunction 1, check the line 2 Inspection or replacement 3, repair or replace 4 Inspection or replacement Suddenly stopped during operation 1. Inspiratory pressure is too low, low voltage relay is powered off 2, the exhaust pressure is too high, the high-voltage relay is powered off 3, the motor is overheated, the thermal relay is powered off 1. Pipe plugging should be dredged, supplementing refrigerant 2, check the amount of cooling water (wind), press the high pressure reset button 3. Is the voltage too low and the cooling load is too large? The compressor does not stop 1. The control system is out of order or the working condition is not good. 2, compressor suction and exhaust valve leakage 1. Overhaul the control system and adjust the pressure and temperature parameters. 2, repair or replace Compressor noise 1, the machine seat is loose 2, liquid stroke 3, compressor parts wear 1, fastening 2, shut small liquid supply valve 3, replacement Pressure gauge pointer beating 1, there is air in the system 2, the needle is loose 3, the valve opening degree is too large 1, put air 2, replacement 3, appropriate to close small Expansion valve ice block High water content in the refrigerant Replace the moisture absorbent Expansion valve is dirty There is garbage in the system System cleaning and cleaning expansion valve screen Expansion valve has a sound 1. Insufficient refrigerant 2, the liquid is not too cold, the liquid pipe resistance is too large 1, Supplement 2, find out the reason for the liquid to have sufficient degree of subcooling Expansion valve has no effect 1, the temperature of the package of working fluid leakage 2, throttle, inlet blockage 1, repair or replace 2, repair or replace Solenoid valve can't hold 1. The small hole in the valve body is blocked. 2, spring failure 1, cleaning 2, replacement Solenoid valve is not sealed 1, there is dirt 2, the seal ring wear 3, the valve pressure is too low 1, cleaning 2, replacement 3, readjust China has become the world's largest producer of Antipyretic And Analgesic drugs. The output of aspirin, paracetamol, analgin and other varieties has exceeded 10,000 tons, and the output of phenacetin, aminopyrine, antipyrine and other varieties has exceeded 1,000. Ton. At present, the output of Antipyretic analgesics in my country is growing rapidly, and it is expected to grow at a rate of about 8% in the future. The production of intermediates for antipyretic and analgesic drugs is large, and there are many manufacturers. With the growth of antipyretic and analgesic drugs, their intermediates have also developed by leaps and bounds. Medicines Intermediates,Brexanolone Vs Ganaxolone,Brexanolone Price,Brexanolone,Minoxidil Sulfate Xi'an Henrikang Biotech Co.,Ltd , https://www.xianhenrikangbio.com
In 2003, the domestic consumption of paracetamol increased rapidly, and the export also showed a rapid growth momentum. The export volume was 28,163 tons, and the annual export volume increased by about double. In the first half of 2004, although its export growth slowed down, it still increased. From January to May 2004, the export volume of paracetamol was 12,501 tons, slightly higher than the same period last year. Para-aminophenol is an important intermediate in the synthesis of paracetamol, which is growing rapidly. The annual output of p-aminophenol in my country is 32,000 tons. It is estimated that by 2005, the domestic production of paracetamol will reach more than 50,000 tons, and the pharmaceutical industry will consume 45,000 tons of p-aminophenol. The total demand for phenol is about 50,000 tons, the market gap is large, and the development and utilization prospects are broad.