Technology

 Schedule Operation  of GRH3  air compressor

 Schedule Operation of GRH3 air compressor

 Schedule Operation of GRH3 air compressor
Dyna air compressor

Dyna air compressor

 DYNA air compressors are originated from ROTORCOMP- A leading global cooperation of screw manufacturing techniques which is famous for German pressure technology. Currently DYNA compressors are manufactured with German technology and assembled in Taiwan.
Air end repairs

Air end repairs

After air end diagnostics, our engineers estimate the necessary repairs and provide calculation of the repairs and necessary spare parts
Sung Shin - VSD air compressor

Sung Shin - VSD air compressor

Variable Frequency Driver (VFD) -reducing energy consumpsion system is produced with the required amount of air and compressor shutdown under no-load conditions. In order to minimize unnecessary energy loss through the inverter to adjust the number spin of compressor Energy consumption saving arises starting by reducing the starting current as the inverter is operated.

Swan air compresssor TS series

Swan air compressors TS series are designed to be compact and dedicated, highly durable, imported air end from Europe, fully-sealed motors, modularized air inlet system,user-friendly equipment panel easy to use.

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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