Fan mechanical failure analysis and elimination method
In the previous article, we briefly talked about fan performance failure analysis and elimination methods
Then let's talk about the analysis of the mechanical failure of the fan and its elimination method. In daily use, due to various reasons, the fan has various failures. We can perform simple self-maintenance of the fan according to the following circumstances. Then contact the manufacturer to perform necessary repairs on the fan.
1. The fan impeller is damaged or deformed
Failure analysis: corrosion or wear on the blade surface or nail head
Elimination method: If it is damaged individually, individual parts should be replaced. If the damage is more than half, the impeller should be replaced.
Failure analysis: loose rivets and blades
Elimination method: hold tight with a small punch, if it is still invalid, you need to replace the rivet
Failure analysis: The impeller is skewed too much after being deformed, causing the impeller to jump radially or the end face to jump too much
Elimination method: After removing the impeller, straighten it with a hammer, or lay the impeller flat and use a side edge of the pressure disc
2. The fan case is overheated
Failure analysis: when the valve is closed, the fan runs too long
Elimination method: shutdown, restart after cooling
3. The sealing ring is worn or damaged
Failure analysis: The seal ring and the shaft sleeve are different from the shaft and are worn out during normal operation
Failure analysis: the casing is deformed, causing one side of the seal ring to wear
Failure analysis: the rotor vibration is too large, and the half of its radial amplitude is greater than the seal radial clearance
Failure analysis: Hard debris enters the sealing teeth, such as metal, welding slag, etc.
Failure analysis: the thrust bushing melts, causing the contact surface of the seal ring and the seal teeth to wear
Elimination method: first remove external influencing factors, then replace the seal ring, readjust and correct the position of the seal ring
4. The belt slips or the belt jumps
Failure analysis: the positions of the two pulleys are not aligned, and they are not on the same center line
Elimination method: rediscover the positive pulley
Failure analysis: the distance between the two pulleys is close or the belt is too long
Elimination method: adjust the tightness of the belt, its method, or adjust the distance between the two pulleys, or replace the appropriate belt
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Company Name Guangzhou Xinfeng Fan Co., Ltd. Contact Miss Wu Telephone 400-088-0118 Mobile 13928867400 Website Address No. 1 Lianxing Road, Shilou Town, Panyu District
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