Posted On March 01, 2026
Screw Compressor Overhauling Service in Bangladesh
Screw Compressor Overhauling Service in Bangladesh: A Complete Step-by-Step Guide for Industrial Maintenance
In any modern industrial setup, a screw compressor is considered one of the primary sources of energy. From a textile factory to a pharmaceutical plant, a food processing unit to a manufacturing factory, compressed air is required for the efficient operation of any machine. This is where the importance of Screw Compressor Overhauling Service comes into play. If overhauling is not done in time, it directly affects the efficiency of the compressor. In this article, we shall discuss what overhauling is, why it is required, and what the process involves when a professional service is hired for the purpose.
Step 1: What Is Screw Compressor Overhauling?
Screw compressor overhauling is a complete process of inspection, maintenance, and restoration of all the internal as well as external components of a compressor. In this process, all the worn-out parts of the compressor are replaced, the internal systems are cleaned, and any damaged component is repaired as well as replaced.
In a rotary screw compressor, there are a number of components involved. These include:
Airend/Rotor Unit
Bearings
Oil Separator
Oil Filter
Air Filter
Cooling System
Electric Motor
Control Panel
During the process of overhauling, all the above-mentioned parts are thoroughly inspected.
Step 2: Why is Screw Compressor Overhauling Necessary?
It is not possible to achieve the desired performance by simply performing maintenance work on the compressor. There are various reasons why the compressor requires overhauling, such as:
If the compressor makes unusual sounds.
If the compressor is vibrating excessively.
If the amount of oil being consumed increases.
If the air pressure is unstable.
If the electricity bills increase unexpectedly.
If the compressor is shut down too frequently.
If the compressor is not performing as desired.
By performing the overhauling of the compressor, the following benefits can be achieved:
Improved efficiency of the compressor
Reduced energy consumption
Increased life of the compressor
Reduced costs of maintenance
Reduced downtime during the production process
Step 3: Complete Inspection and Diagnosis
The process of overhauling the compressor is initiated by performing the inspection of the compressor, as follows:
During the inspection, the operating pressure is checked.
The temperature is also checked.
The quality of the oil is analyzed.
The vibration is also checked.
The electrical systems of the compressor are also inspected.
The inspection is performed by the prominent compressor manufacturing companies, such as Atlas Copco, Ingersoll Rand, and Kaeser Kompressoren, using sophisticated machines for the diagnosis of the problem with the compressor.
Step 4: Airend Disassembly and Bearing Replacement
The airend is the core part of the screw compressor. When the bearings in the airend deteriorate, this can lead to:
More noise
Less efficiency
Rotor misalignment
Severe internal damage
When the compressor is being overhauled:
The airend is disassembled
Worn-out bearings are replaced
New bearings are fitted
Rotor clearance and alignment are determined
This is the most critical part of the whole process.
Step 5: Oil System Cleaning and Replacement
In the case of the oil-injected screw compressor, the lubrication system plays an important role in the smooth running and efficient cooling of the compressor.
When the compressor is being overhauled:
The old compressor oil is removed
New oil filters are fitted
The oil separator is replaced
The internal oil pipes are cleaned
New compressor oil is added
This ensures the smooth running and efficient cooling of the compressor.
Step 6: Cooling System Overhaul
Overheating is the leading cause of compressor failure. Therefore, the cooling system should always be in good working condition.
When the compressor is being overhauled:
The air or oil cooler is cleaned
The radiator is flushed
The fan and motor are checked
The thermostatic valve is inspected
This ensures efficient and smooth running of the compressor.
Step 7: Electrical and Control Panel Testing
In new screw compressor designs, PLC and smart control systems are used for automatic control of the compressor. Electrical testing is an important part of screw compressor overhaul.
In screw compressor overhaul, the following are carried out:
Control panel wiring test
Sensor calibration
Pressure switch test
Motor insulation test
Overload relay test
If electrical testing is not carried out properly, it will not be possible to obtain satisfactory results from screw compressor overhaul and repair work alone.
Step 8: Reassembly and Performance Testing
Once all repairs and replacement of damaged parts are complete, reassembly of the screw compressor begins.
No-load test
Full-load test
Stability test
Pressure test
Air leakage test
All these tests are carried out to ensure that the screw compressor performs optimally and within the required standards.
Step 9: Benefits of Professional Screw Compressor Overhauling Service
If professional screw compressor overhaul services are availed of, several benefits are obtained in the long term:
Maximum Efficiency
The compressor will regain its original efficiency.
Energy Saving
Energy consumption can be reduced by 10% to 20%.
Long Service Life
The compressor’s working life will increase by several years.
Less Chances of Breakdown
Unexpected breakdowns will be significantly reduced.
Cost-Effective Solution
Overhauling will be more economical than purchasing a new compressor.
Step 10: When Should You Perform Overhauling?
Overhauling is suggested in the following scenarios:
After 20,000 to 30,000 running hours
When excessive vibration or noise is detected
When signs of wear on the airend are evident
When excessive trips or pressure instability occur
In the case of heavy industrial applications, it may be suggested that the overhauling be carried out even earlier.
Why Choose Professional Overhauling Service in Bangladesh?
Bangladesh has a rapidly expanding industrial sector, especially in textiles, garments, pharmaceuticals, and manufacturing industries. Compressed air systems play a vital role in the smooth operation of such industries.
What does a professional service provider offer?
Authentic spares used in the process
Expert and experienced engineers at work
On-site support available at all times
Warranty guarantee offered
Emergency services available in case of a breakdown
Working with experienced professionals will ensure that your compressor is running efficiently, safely, and reliably.
Final Thoughts
Screw Compressor Overhauling Service should be viewed as an investment and not as a cost.