How to install and debug refrigeration equipment in cold storage installation?

Cold storage installation includes multiple steps such as overall framework construction, panel installation, and condenser group installation Install the air cooler Pipeline laying, etc. Every step must be correct to ensure the normal operation of the cold storage after installation.
One Assembly and installation of refrigeration unit
1. Half sealed or fully enclosed compressors should be equipped with an oil separator and an appropriate amount of oil should be added to the oil. When the evaporation temperature is below -15 degrees, a gas-liquid separator and an appropriate amount of refrigeration oil should be installed.
2. The compressor base should be equipped with a shock-absorbing rubber seat.
3. The installation of the unit should leave maintenance space for easy observation of instrument and valve adjustments.
4. The high-pressure gauge should be installed at the three-way valve of the storage tank.
5. The overall layout of the unit is reasonable, with consistent colors and installation structures for each model of unit.
II Install cold storage and air coolers
When choosing the location of the lifting point, the first consideration should be the location with good air circulation, followed by the direction of the warehouse structure.
The gap between the air cooler and the storage plate should be greater than the thickness of the air cooler.
3. All suspension bolts of the air cooler should be tightened, and the bolts and suspension bolts should be sealed with sealant to prevent cold bridges and air leakage.
When the ceiling fan is too heavy, a 4-angle or 5-angle iron should be used as a beam, which should pass through another top plate and wall panel to reduce the load.
III Refrigeration pipeline installation technology
The selection of copper pipe diameter should strictly follow the selection of compressor suction and exhaust valve interface. When the separation between the condenser and the compressor exceeds 3 meters, the pipe diameter should be increased.
2. Keep the suction surface of the condenser at a distance of 4000mm and the air outlet at least 3 meters away from obstacles.
3. The inlet and outlet diameters of the storage tank shall be based on the exhaust pipe diameter indicated on the unit sample.
4. The suction pipe of the compressor and the return pipe of the air cooler shall not be smaller than the size specified in the sample to reduce the internal resistance of the evaporation pipe.
5. The exhaust pipe and return pipe should have a certain slope. When the condenser is positioned higher than the compressor, the exhaust pipe should be inclined towards the condenser and a liquid ring should be installed at the compressor exhaust port to prevent gas cooling and liquefaction from flowing back to the high-pressure exhaust port after shutdown, which may cause liquid compression when restarted.
6. A U-shaped elbow should be installed at the outlet of the air cooler return pipe, and the return pipe should be inclined towards the compressor to ensure smooth oil return.
7. Expansion valves should be installed near the air cooler as much as possible, solenoid valves should be installed horizontally, valve bodies should be vertical, and attention should be paid to the direction of liquid outlet.
If necessary, install a filter on the compressor return pipeline to prevent dirt from entering the compressor and remove moisture from the system.
Before tightening all sodium and locking nuts in the refrigeration system, apply refrigeration oil for lubrication, strengthen the seal, wipe clean after tightening, and lock the packing of each door.
10. The expansion valve temperature package is fixed with a metal clamp at the outlet of the evaporator, with a thickness of 100mm to 200mm, and wrapped with double-layer insulation.
11. After the entire system is welded, an air tightness test should be conducted. The high-pressure end should be filled with 1.8MP of nitrogen, and the low-pressure end should be filled with 1.2MP of nitrogen. During pressurization, soap water should be used for leak detection, and the leak should be carefully checked.