Technology

Kobelco air compressor maintenance

21/12/2018

Minh Phu Machine and Technical Services Co., Ltd specializes in providing consulting, repair and maintenance services of Kobelco Japanese air compressors.Moreover, Minh Phu also provides Kobelco parts: compressor oil, oil separator, oil filter, air filter, bearings, solenoid ...

How to find the causes and repair water chiller

27/12/2018

In the process of operation and use of air conditioners in general and chillers in particular, there are many incidents that make users face with many difficulties. In this article we provide readers with the most basic knowledge to determine the causes, phenomena and remedies when air conditioning (chiller) is in trouble.To help you deal with problems during the machine operation and use, we would like to introduce some of the following common problems:

Common causes and troubles of vacuum pump

19/08/2019

During operation as well as operation of operators '"Malfunction is unavoidable'" Some basic incidents such as: Do not reach vacuum level, pump overload ... With many years of experience, We have successfully repaired many vacuum pumps. The following are some of the reasons why the vacuum pump failures, and some common vulnerabilities with the hope that the operator can identify and take prevention.

Dyna air compressor

12/01/2019

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.

New Hiscrew Oil Next-Hiatchi air compressor

24/12/2018

Hitachi compressor oil is produced by Hitachi - one of the Japanese industrial machine brand. Hitachi is a specialized compressor oil for Hitachi air compressor.

Control of condensate

Tuesday - 01/01/2019 23:12

During process of repairing and maintaining the air compressor system for our customers, some questions related to the issue of condensation and discharge usually asked, such as: If the discharge is not stopped and the condensate is not discharged properly How many ways to discharge condensate? How long does it take to discharge the condensed water How many minutes to stop discharging per time, when to stop condensing? How to discharge condensate before starting HISCREW ? .. etc. So,e this article is written with hope to answer some of your questions.

máy nén khí hitachi, Hitachi air compressor — Hitachi air compressor

1. If you do not discharge the condensate or discharge is not correct, what will happen?

- Running the compressor for long time without draining may cause not only troubles to the Rotor and Bearing in its air end, but other major troubleslike rusting inside equipment .
- If draining condensate is not taken, it will stop in trap, air end, oil case, pipes and even follow compressed air to factorides,compressed air mixed water can damage the good quality, rusting inside the manufacturing equipments, and damage the products of company.
For example: Companies producing electronic components, food manufacturing companies ... highly require dried air. For textile companies, if compressed air has water to dampen the fibers, it is too difficult to clean ...

2. How many ways to condensate discharge?

- There are two ways + Automatic water discharge (set time for automatic discharge machine) + Discharge water by hand (Operator of discharge machine) 3.How long have you need to discharge? Frequency of condensate discharge?
- Depend on machine capacity, type, and using condition ( moisture of environment..), The method will be different.
- In normal condition, About 20 minutes discharge 1 time. Each time is about 15-30 seconds. However, depend on using time, users can change the suitable time r

- If the compressor is long unused time, operators have to discharge completely water in the trap.
4. Control of condensate
- The oil temperature control valve controls the oil temperature and thus prevents the condensate from being produced in the oil case under the normal conditions.
- Dưới các điều kiện hoạt động dưới đây, có thể vẫn xảy ra ngưng trong bình dầu:
-The ambient tempeature and relative humidity is as high as :
   + 30 and more than  80%
   + 40 and more than 50%
-HISCREW stops and restart repeatedly
-The oil cooler cools the oil excessively
If this case. open the oil draining valve and checkiff the condensate comes out. Drain the condensate as required.

5.Draining the condensate before starting the HISCREW

Make sure that the HISCREW is not operating and the discharge pressure gauge reads 0 MPa
Close and then unplug the oil draining valve on the pipe extended from the oil case.
Place the oil pan under the oil draining valve
Open oil draining valve
The oil comes out and the condesate follows .
When the oil starts to comes out again,close and plug the oil draining valve.

Notes :
If the condensate discriminable from the lubricant,check its viscosity by your finger tips while draining. Be sure the condensate is well cooled before touching it. If the condensate sticks to your fingers, the lubricant is coming out.

- If the compressor is long unused time, operators have to discharge completely water in the oil pan.