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Use and operation of fans

Wuxi JN Fan Co.,Ltd | Updated: Jun 25, 2018

1. Preparation of fan before starting

1) closing the regulating valve and closing the inlet and outlet valve of the fan;

2) manual turning, check the gap of each part of the fan, turn the impeller and the shell to see if there is any friction.

3) Coupling, belt pulley protection passport installed in place;

4) whether the oil level of the bearing box is satisfied with the lubricating oil level at the time of operation;

5) for the fan with water-cooled bearing, check whether the water supply of cooling water pipe is good or not;

6) electric power determines the steering of the fan, and at the same time, it should check whether there is any leakage, oil leakage, vibration, abnormal sound, peculiar smell and so on.

2. Start of fan

1 ) Start the fan ( note whether the operation is stable ) ;

2) after the fan is started, the large wind valve will be opened gradually until the actual air volume required in production, and attention should be paid to the running current of the motor when opening the large wind valve, so as to prevent the fan overload caused by the large opening of the wind valve;

3) the bearing temperature of the fan should be detected after startup, the temperature rise of the bearing should not exceed 40 degrees of the ambient temperature in the field;

3. Check the fan during operation

1) listening to the smooth operation of the fan, there is no difference in sound or friction;

2) check whether the anchor bolts are loose or not;

3 ) detecting the temperature and the lubrication condition of the bearing ;

4) the bearing lubricating oil cooling water is unblocked, the inlet and outlet pipes have temperature difference;

5) whether there is any leakage of lubricating oil in the bearing box;

6) whether the bearing box and bearing have abnormal noise or not, and whether the rotation is stable or not;

7) checking whether the current is stable;


4. emergency parking

1) it is found that the fan has a loud noise;

2) friction between impeller and housing;

3) sudden aggravation of shell vibration;

4) the bearing temperature increases continuously and exceeds the allowable temperature rise range;

5) the sudden increase in current does not recover within 2 minutes.

6) serious oil leakage in the bearing box;

7) cooling water is interrupted for more than half an hour.

5. Fan shutdown

1) lighten the load and then stop the fan;

2) closing the inlet and outlet valve of cooling water;

3) If the hot air is transferred, the fan should be stopped after the heater is stopped and the outlet temperature of the fan is reduced to 40 degrees

4) When the fan stops, open the drain valve at the bottom of the casing and close the inlet and outlet of the fan. http://www.jnblower.com/

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