Technology

Maintenance compressed air system

Maintenance compressed air system

The maintenance compressed air systems are often specified in the system documentation, provided by the manufacturer. In this artical we would like to introduce some rules and maintenance regimes according to general regulation.
Hanshin piping filter

Hanshin piping filter

Hanshin piping filter
Troubles, cause and troubleshooting of air blower

Troubles, cause and troubleshooting of air blower

After using period, some troubles or phenomenons can be caused which are need to be timely detected and dealt with. In order to operators easily use and detect , it’s our pleasure to introduce some common troubles and solutions.

Swan TS-V air compressor

Swan TS-V airr compressor series is a series of machines using inverter to reduce power consumption and have outstanding features of the Swan TS series. Based on operating phenomena to optimize operation, ensure maximum air volume and minimum power consumption, average electricity savings at: 15% - 30%. Protection and advanced control system improved reliability of safe and enhanced operating performance; Air compressor starts at zero speed, extending the machine's durability.
Valvoline air compressor oil

Valvoline air compressor oil

Valvoline is belonged to Ashland Inc. USA was founded 1866 by Dr. John Ellis to be the first people creating the valve lubricating for system steam engine.

Air end repairs

Friday - 21/12/2018 22:14

After air end diagnostics, our engineers estimate the necessary repairs and provide calculation of the repairs and necessary spare parts. Depanding on the air end size, the repairscan be release from some days to some months

thay bi may nen khi micos 37
Our company repairs the air end of the following manufacturers: ABAC, Dyna, Kobelco, Fusheng, Hitachi, Hanshin, Micos, Swan, Ingersoll Rand, Boge, Atlas Copco, Sullair, Kaeser, Kyungwon, Compair, Puma, Buma, Ceccato, Airman, Quincy, SCR, Mitsui Seiki, Swan, … 

Possible cases of air end repairs:

 1.Run-out of the shaft seal and sealing rings, and as result, oil leaks. Insufficient quantity of the oil will not cool the air and bearings lubricant enough, and will be the case of equipment break, and as result will not lubrucate of the rotors effective and air overflows from the screw coils, that reduce the performances of the screw compressor.   
 2. Bearing run-out is a reason of changing screw alignment, changing the gaps (increasement and decreasement).
At best, the efficiency will be decrease (in case of the end gap increase), at worst, air end blocks because of welding the rotors to the housing of the screw unit (in case of end gap decrease) and block because of changing the rotors alignment.
3. Burrs on screws.
At first it increase the load on bearings (bearing run-out increasing, power loss), then the open space for the contact is appear occurs the air end block. The similar result can be reached after certain time of noise inside the air end without any reaction from the personnel side.
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Air end repairs include:

1. Diagnostics: disassembly, revision and assembly the air end.
2. Bearings replacement (we use bearings the best world bearings manufacturers).
3. Rotor surface recovery (if necessary).
4. Housing geometry recovery (if necessary).
5. Air end shaft seal kit replacement.
6. The optimal gap adjustment and rotor alignment, gaps regulation:
Gap and rotor alignment adjustment is released with using special tool, due to the highest efficiency of the air end and long lifetime of the  unit is providing.  The gaps adjustment are in certain ranges, which provides high efficiency.If during compressor operation the gaps (for example, end gaps) will be adjust less than minimum value of the range, rotors heat, metal expands and it is a reason the rotor and housing contact. As rotation speed is high, shortly metal weld.
Then the screw unit can be just utilize. If the gaps are highter than maxumum value of the range, efficiency decreases because of air-oil mixture leaks,  as well as parameters of the cooling element and rotor lubricant are changed, that prevent  to decrease the air end lifetime.
We provide warranty terms for repaired air end.
                                                                                          
  Mr : Phu Nguyen

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 or our e-mail address:  info.mipuco@gmail.com. Sincerely thank you for your interest and your trust of our service.

Air end repairs, thay bi đầu nén máy nén khí, thay bi may nen khi,

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