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Root cause and diagnosis of vibration of precision air conditioning fan in machine room

There should be a qualified mechanical technician (or, hire a contract mechanical technician) on the data center staff. Should be responsible for the successful operation of the data center, this must consider the need to pay attention to the issues. For example, the fan of the refrigeration unit in the computer room is a machine and equipment that is very prone to problems.
Simply put, if the computer room air conditioning does not blow out the gas, obviously, is wrong. However, in the protection of the computer room air conditioning unit, should also pay attention to the subtle sound changes.
A refrigerant or liquid precision air conditioner includes many components, including the cooler electromagnetic coil, refrigeration compressor, air humidifier and fan. We're going to put our weight on the fan.
The fan is a mounted rotating cutter head that may or may not have a closed case. A fan may be a fan or an exhaust system device. A fan is a fan that blows gas into a hose, working pressure room, room, or other indoor space. An exhaust fan is a fan that pulls gas out of a room. We're going to put the weight on the blower.
Do you hear or feel abnormal vibration and noise coming from the central air-conditioning unit in your computer room? The following are details of fan vibration and noise problems and how to correct them in time. Once again, only a very small number of qualified mechanical technicians can do the final diagnosis and maintenance.
Vibration of fan is a common fault commonly used in operation. Vibration of fan can also cause rolling bearing and leaf destruction, screw loosening, shell and duct destruction, etc., which seriously endangers the safe operation of fan. There are many reasons for fan rolling bearing vibration exceeding the standard. If appropriate treatment methods can be adopted according to different phenomenon analysis, unexpected effects can usually be achieved.

(1) Centrifugal impeller, rolling bearing, coupling, or V-belt wheel has not been corrected. Repair note: Release pressure, line up the above parts or tighten the machine equipment.
(2) Unstable basic or wood flooring often means a poor quality design scheme. Repair note: You may need to re-gradually provide a firm, level mounted surface.
(3) Check the raw materials outside the unbalanced fan. Many repairmen will find something sticking to the fan sound card frame. Repair Note: Remove the object and see if it is damaged.
(4) Rolling bearing damage is difficult to diagnose, but noise or rotation problems are significant indicators of problems. Repair indicates: replace the rolling bearing and shaft rod.
(5) Centrifugal impeller or motor damage. Repair attention: Regular inspection and repair by qualified professionals.
(6) Old or scattered anchor bolts or screws. Repair note: tighten replacement new.
(7) shaft deformation or rotation shaft damage. The big question is why this happened. Repair note: Replace.
(8) The centrifugal impeller or rotating shaft is not balanced. Repair note: Balance.
(9) The fan transmission reaches the rated current. Fix: Reduce the fan speed ratio.
(10) The fan speed is high or the fan direction is incorrect. Repair indicates: Reduce fan speed or correct fan direction.
(11) Check the vibration sent to the fan from somewhere other than the fan. Repair attention: vibration protection or maintenance.
(12) Damage is a common situation in the fan. The vibration of the fan is slow and high in the operation process. It is generally caused by leaf damage and balanced destruction. At this time to solve the problem of fan vibration is generally done in the boiler after blowing pipe dynamic balance.
Every data center's equipment should be in good condition. Daily, weekly, monthly, quarterly, and yearly checks should be designed with select plates to ensure the scalability of the data center. Every person who goes to the data center should bear the normal use time, and report the abnormal problem in time. Fully ensure the efficient and secure operation of data centers.