The fan is usually installed on the top of the air-cooled screw chiller, and some users choose to install it on the side as required. For a screw chiller that uses a fan to dissipate heat, we call it an air-cooled screw chiller. The installation environment must be kept empty and the air can be easily circulated so as not to affect the cooling effect of the air-cooled screw chiller.

However, in the case of mechanical and electrical equipment, there will be some faults during installation or use. So, what are the common faults of the fan of the air-cooled screw chiller? How should companies rule out?

1. The aircraft noise of the air-cooled screw chiller is too large:

1. Bearing component wear/gap is too large: if it is worn, it should be replaced in time. If the clearance is too large, it can be directly adjusted to the appropriate position;

2, the speed is too high: can be improved by reducing the speed, if not solved, the fan should be replaced;

Second, the temperature rise of the motor of the air-cooled screw chiller fan is too high:

1. The flow rate exceeds the rated value: the small valve can be closed at this time;

2. There is a problem with the motor or power supply: the reason for finding the motor and power supply;

Third, the temperature rise of the bearing of the air-cooled screw chiller fan is too high:

1. Lubricating oil (fat) is not enough or poor quality: If the lubricating oil is not enough, the enterprise should fill up the required parts; if the quality is bad, the bearing should be cleaned and replaced with qualified lubricating oil (fat);

2. The fan shaft and the motor shaft are different: the concentricity should be adjusted;

3, bearing damage: At this time should replace the new bearing, or directly contact the chiller manufacturer to replace;

Fourth, the airflow of the air-cooled screw chiller fan is small:

1. Check if the direction of rotation of the impeller is reversed. This can be solved by changing the position of any two wires of the motor;

2. The opening of the valve is not enough, and the belt is too loose and the rotation speed is not enough: the bearing can be detected by adjusting the valve to open to the appropriate opening degree, tightening or replacing the belt, and checking the voltage;

3, air inlet or outlet, pipe blockage: check the intake / outlet, and remove the blockage;

4. It may be that the connection between the impeller and the shaft is loose and can be eliminated by direct fastening; if the gap between the impeller and the air inlet is too large, it should be adjusted to a suitable gap.

The fan of the air-cooled screw chiller is equivalent to the cooling tower cooling system of the water-cooled chiller. If the heat dissipation effect is not good, the cooling capacity of the air-cooled screw chiller is absolutely insufficient, which directly affects the demand for chilled water. Therefore, it is necessary to carry out regular inspection, maintenance and maintenance of the air-cooled screw chiller, which not only reduces the failure rate of the air-cooled screw chiller, but also prolongs the service life of the air-cooled screw chiller.

Jiangsu Jincheng Air Conditioning Engineering Co., Ltd. focuses on:

Industrial air conditioners, chemical fiber industrial air conditioners, chemical fiber industry refrigeration, textile industry air conditioners, clean room refrigeration, ventilation ducts, cooling towers, refrigeration machines and other air conditioning units and accessories.