External rotor air conditioning fanMaintenance work system
1. The external rotor air conditioning fan must be used and maintained by special personnel.
2. External rotor air conditioning fan is not allowed to run with disease.
3. Regularly remove dust inside the external rotor air conditioning fan, especially the dust, dirt and other impurities on the impeller, in order to prevent corrosion and imbalance.
4. External rotor air conditioning fan maintenance must emphasize the first power shutdown.
5. Regularly check the sensitivity of thermometer and oil mark.
6. Except that the lubricating oil should be replaced after each disassembly and repair, the lubricating oil should be replaced once from march to June under normal circumstances.
External rotor air conditioning fanThe main faults and causes of
1. Violent vibration of bearing box
① The outer rotor air conditioning fan shaft is different from the motor shaft, and the coupling is tilted
(2) & have spent The casing or air inlet rubs against the impeller
(3) & have spent The rigidity of the foundation is not strong
The impeller rivet is loose or the impeller is deformed
The leaf wheel shaft plate and shaft loose, or the coupling bolt loose
The air inlet and outlet pipes of the external rotor air conditioning fan are poorly installed
The rotor is not balanced, the rotor air conditioning fan blade wear
2. Bearing temperature rise is too high
① Violent vibration of bearing box
(2) Lubrication grease quality is not bright, metamorphic, contains too much dust, sand, dirt and other impurities
③ The tightening force of the connecting bolts of the bearing box cover and seat is too large or too small
(4) The shaft and rolling bearing are installed askew, and the front and rear bearings are different
The rolling bearing is damaged
3. Electrode current is too high or temperature rise is too high
(1) The intake pipe gate or throttle valve is not closed when starting
② The flow exceeds the specified value
③ The density of air transported by the external rotor air conditioning fan is too large or has viscous substances
The motor input voltage is too low or the power supply is single-phase
The coupling connection is not correct, the leather ring is too tight or the gap is not uniform
⑥ Affected by the violent vibration of the bearing box
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