The operating conditions and parameters of the industrial chiller cooling system have great influence on the chiller. The purpose of adjusting the main parameters of the cooling system is to control the parameters and make it run in the most economical and reasonable condition. In particular, compared with the power of the screw type water chiller, debugging work is not done, it will directly affect the late cooling effect.
(1) refrigerant charge. At present, refrigeration units in the factory generally in accordance with the regulations is filled with refrigerant, site after installation, check the appearance of if there is no accidental injury, can directly open the valve (should first read the instructions of the manufacturer, in transit, valve unit in the general closed) commissioning. If it is found that the refrigerant has been leaking or lack of should first find out the leak and eliminate the leakage phenomenon, then according to the cold water machine instructions, adds the specified grades of refrigerant. The refrigerant filling quantity shall meet the technical requirements.
(2) some screw type chiller needs to be filled with refrigerant at the user's site, the filling amount of the refrigerant and the grade of the refrigerant must be in accordance with the regulations. Insufficient refrigerant charge capacity will lead to insufficient cooling capacity. Refrigerant charge too much, not only will increase the cost, but also on the industrial chiller operation energy consumption may bring adverse effects.
(3) prior to filling the refrigerant in the industrial cold water machine, there should be enough refrigerant in advance. Filling, can be directly from the dedicated filling valve. Because the system is in a vacuum state, cylinder refrigerant and system pressure, when the valve is opened (should first with refrigerant blowing air connection tube, in order to avoid the air into the unit, unit performance), refrigerant rapidly from the cylinder flow system, after filling, the liquid filling valve is closed, to remove connecting tube.
(4) refrigeration system debugging. After the refrigerant charge is finished, the load can be debugged. Because in recent years, screw chillers in performance and electrical control have great progress, many screw chillers before the official start can be simulated action examines the side of main electric control system, that unit is not energized, the control system is energized, and then through the machine group set, the electrical control system of the unit were detected, components are working properly. If there is any problem in the electric control system, it can be solved in time. Finally through the host power supply, debugging.