During commissioning, special attention shall be paid t […]
During commissioning, special attention shall be paid to the following points:
1) Check whether all valves in the refrigeration system are in normal open state, especially the exhaust stop valve, do not close.
2) Open the cooling water valve of condenser and cold water valve of evaporator, and the flow of cold water and cooling water shall meet the requirements of the manufacturer.
3) Before starting, observe whether the power supply voltage of the unit is normal.
4) Start the unit according to the start-up manual provided by the manufacturer.
5) When the unit is started, check whether all parameters of the unit are normal according to the start-up manual provided by the manufacturer.
6) According to the operation data record form of screw chiller provided by the manufacturer, all data of screw chiller can be recorded, especially some main parameters must be recorded clearly.
7) During the operation of screw chiller, attention should be paid to whether the up and down loading mechanism of compressor works normally.
8) The safety protection devices installed in the refrigeration system shall be used correctly, such as high and low pressure protection devices, cold water and cooling water cut-off flow switches, safety valves and other equipment, and they shall be replaced in time in case of damage.
9) In case of any abnormal condition of screw chiller, it shall be stopped immediately for inspection.
Before the commissioning of refrigeration system, it is necessary to clean and dry the inside of air conditioning system. If the preliminary work is not carried out carefully, a lot of work will be added during the commissioning period, and many hidden dangers will be brought to the future operation of the refrigeration unit.