Technology

Dyna air compressor

Máy nén khí trục vít Dyna

How to deal with some problem of desicant air dryer (heatless type)

How to deal with some problem of desicant air dryer (heatless type)
Kaeser DSD 202 air compressor  repair and maintenance

Kaeser DSD 202 air compressor repair and maintenance

Kaeser DSD 202 air compressor repair and maintenance

Instruction for operation of Handsome II air compressor

Instruction for operation of Handsome II air compressor

Some attentions of desicant air dryer (heatless type) maintenence

Compressed air system in factory plays an important role. In order to ensure the stable operation during the manufacturing process, the regulary maintenance is nescessary . However, in fact there are many different problems  such as: Air compressors, dusty air dryers, high engine room temperatures, unsecured wind convection ... lead to reduce using  time of compressor accessories (air filter, oil filter, oil separator ...). On the other hand, the recommended  maintenance   in some factories is not seriously followed and there are deviations. To extend the life of the machine as well as compressor components and ensure operate safely Air compressors are very important to maintain regularly and technically correct.Air compressors, dusty air dryers, high engine room temperatures, unsecured wind convection ... lead to reduced use time of compressor accessories (air filter, loc oil, oil separator ...). On the other hand, the maintenance (maintenance) recommended by the manufacturer in some factories is not guaranteed and there are deviated. To lengthen  longevity  of mạchine as well as compress

6 tips to repair the 1 phase asynchronous electric motor

Wednesday - 02/01/2019 03:26

                          6 tips to repair the 1 phase asynchronous electric motor

dong co dien 1 pha

6 tips to repair  the 1 phase asynchronous electric motor : 1 phase asynchronous electric motor is widely  applied in daily life such as : washing machine, bumping, grinding mạchine, fans drilling...
Low capacity  air compressor uses 1 phase asynchronous electric motor such as; air compressor used  to pump bicycles, dry motobike after washing...So the repair and maintenace needs is popular. In this article, some symptoms, causes, and remedies of 1 phase asynchronous electric motor which is booted by capacitor are introduced to you. 

1. phase motor is slowly running, has  groaning sound and high current.

- Cause  : 
+ Tighten shaft
+ Inner short-circuited in some windings
- Remedies : 
+ Twist the cap, recalibrate rotor, check bearing or replace bearing. 
+ Check windings by gronha, if it is internally short- circuited , wrap it. 

 2. Only use motor crank can start the engine .

- Causes :
+ Leakage of  capacitor makes parameters changed  
unbalanced calibration
- Remedies : 
+ Replace capacitor 
+ recalibrate

 3. Abnormal noise after power connection.

- Cause :
+
the bearings are pitted
+Bearing is worn out causing mechanical collision. 
- Rememedies :
+ Replace bearing

 4. The  capacitor is frequently broken when rewinding the stator 

- Cause:
+ Wrong the number of windings( decreasing the number of rings) causes voltage on the capacitor is bigger than that rated voltage.

+ Replace capacitors with smaller capacitance so the voltage on the capacitor is larger than the rated voltage of the capacitor
- Remedies :
+ wrap it
+ Replace capacitor 
5. Metal collision
- Cause 
+ If insulation between winding and  steel core is broken, wrap another new winding. 
+ Check and repair connector which  tough to the cover.
- Remedies 
+ If the inssulation is broken, changing new winding is nescessary
+ Check and repair connector which  tough to the cover.

6. Motor can not start after power connection, rotor is deflect, excessive vibration.  

- Cause :
+ Bearing  is worn out Do vòng bi hoặc bạc quá dơ
+ Te cap is deflected, rotor is inconcentric.
- Remedies:
+ Replace bearing
+ Twist the cap and recalibrate rotor 
Some notes:
- In order to ensure the motor  safety and durity, you should peridically maintain, leave motor in dry airy place. 
- Wraping moto, some notes should be paid attention to : wiring quality, number of rings,
conductor cross-section ...to avoid loss motor productivity. 
- when detect some symptoms , disconnect the power supply, then using ammeter checks wirings if it tough the cover or not? Depending on the actual situation and specific conditions, you can use other measures (electric tester ...) to check but make sure that it's safe 

Other artical: How to detect failures of air compressor? some special cases of 3 phase asynchronous , see more 


Minh Phu provides maintenance and repair services for air compressors, in addition Minh Phu also provides spare parts for air compressors with high quality at reasonable prices. For further information, please contact (+84)919 23 28 26. Sincerely thank you for your interest and your trust of our service. Six tips to repair a single-phase asynchronous electric motor, fix a 1-phase asynchronous motor, repair a 1-phase asynchronous moto,

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