Independent screw-compressor service - every major brand, one contract
Modern Tech Group is a brand-independent service provider for industrial screw compressors of all power ratings. That means one maintenance contract covers your Atlas Copco GA, Kaeser BSD, Ingersoll Rand R-Series and CompAir L-Series without routing each machine through a different OEM distributor.
Every visit ends with a signed English report listing measurements taken (differential pressure, discharge temperature, oil condition, vibration on the airend housing), parts consumed and next recommended intervention. The report format is unchanged across brands.
How the service works for multi-brand fleets
- Unified maintenance plan across all compressor brands on the same site
- OEM-equivalent parts, priced in EUR
- Genuine parts on request for equipment still under manufacturer warranty
- Overhaul of screw airends: bearings, seals, rotor regeneration
Ask about a multi-brand service contract
Send us a fleet list (brand, model, rated power, running hours) and we return a fixed annual quote in EUR within two working days.
Email the service desk - biuro@moderntechgroup.plScrew-compressor service across Poland - coverage model
Screw compressors (rotary screw, both oil-injected and oil-free) are the workhorse of Polish industrial compressed-air rooms. We service every major brand - Atlas Copco GA / G / ZR / ZT, Kaeser SK / BSD / CSG, Ingersoll Rand R-Series and Nirvana, CompAir L-Series and DH, Boge S / SL / SF, Almig Combi, Airpol, Renner RS-M - from a single Radom base with mobile teams covering Mazowsze, Świętokrzyskie, Łódzkie, Lubelskie and Małopolskie in day trips.
For clients further afield (Silesia, Wielkopolska, Pomerania) we run a scheduled rotation model: preventive maintenance is grouped by region, dispatched Tuesdays and Thursdays, keeping travel cost per visit low. Emergency calls are taken 24/7, and we confirm the arrival time when you report the fault.
Why a specialist screw-compressor service, not a general mechanical shop
Air-end diagnostics before overhaul commitment
The 'is the air-end really worn out or is it the inlet valve' question is a five-figure decision. We diagnose with vibration analysis, oil particle count, and controlled pressure ramp tests before recommending an air-end swap. In roughly one third of cases the customer avoids an overhaul that a less-specialised shop would have sold them.
Oil-free screw competence (ISO 8573-1 Class 0)
Oil-free two-stage screws (Atlas Copco Z-Series, Kaeser CSG, CompAir DH) require dry-side rebuild skills that most general workshops lack. We rebuild Z-Series air-ends with OEM-spec torque and clearance protocols and verify class-0 output.
Controller and VSD retrofit
Older fixed-speed screws can often be retrofitted with variable-speed drives at 30-40% of the cost of a new compressor, cutting energy bills 20-35% on typical duty cycles. We size, install and commission Danfoss and ABB drives with matched control-system integration.
Multi-brand fluency saves you a second service contract
Compressor rooms accumulated over 20 years typically hold two or three brands. Rather than signing separate contracts with each OEM, one contract with us covers all of them - with a single point of accountability when things go wrong.
Site reports engineered for group CMMS
Post-service PDF reports in English (or German on request) with the exact field structure that SAP PM, IBM Maximo and Infor EAM ingest. Your group maintenance planner does not translate or re-key anything.
FAQ - industrial screw-compressor service
More from our compressed air services
Screw compressor repairs - what is included
Repairing a screw compressor rarely means replacing just one part. A compressor is a system in which the airend, oil circuit, cooling and controls depend on one another: an overheated machine degrades oil faster, degraded oil shortens bearing life, and worn bearings increase current draw and noise. That is why every repair starts with measurements and ends with checking performance under load.
On every visit, we assess the machine's actual operating conditions - room temperature, dust levels, pipework length and cross-section, and the condition of filtration and drying.
When a repair is not enough, we carry out screw compressor overhauls and reconditioning.
If you would first like to understand how the machine is built, read our guide to screw compressors - design and selection.
Diagnostics
We start by reading the controller history and measuring pressures, oil and air temperatures, and current draw during loaded and unloaded operation. We check the housing for leaks, the coolers for blockages and the condition of the oil. Only this combination of data allows us to distinguish a worn airend from a simply clogged separator - a difference of tens of thousands of PLN in the repair estimate.
Screw airend
We check rotor axial and radial clearances, bearing condition and shaft seals. If noise increases, metal particles appear in the oil and output drops, we recondition the airend: replacing the complete set of bearings and seals and adjusting the clearances. Our repairs restore the machine's specified output, rather than merely stopping the alarms.
Oil system and separation
Oil changes using oil matched to the operating temperature and machine type, plus servicing of the oil filter, oil separator, thermostatic valve, minimum pressure valve and lines. We eliminate leaks at seals and connections and check oil carryover in the outlet air. Excessive oil carryover is the most common cause of complaints about air quality in the system.
Cooling and compressor room ventilation
Cleaning the oil cooler and air aftercooler, and checking the fan, thermostat and temperature sensors. We also assess the room itself: supply and exhaust duct cross-sections, intake air temperature and hot air recirculation. Most overheating problems originate in the room, not in the machine.
Control and automation
Servicing controllers, pressure transducers, temperature sensors, contactors and motor protection devices. We interpret and clear fault codes, adjust cut-in and unloading pressure settings, and configure cascade operation of multiple machines so they do not compete to meet the same air demand.
Frequency converters and variable-speed drives
Diagnostics of frequency converters, filters, chokes and cabinet cooling, measurement of the actual load profile and verification of PID controller settings. We check whether the variable-speed machine actually operates within its control range or merely switches between loaded and unloaded operation - in the latter case, the frequency converter alone delivers no energy savings.
Periodic screw compressor servicing
Periodic servicing is the least expensive item in a compressor room budget, yet it has the greatest impact on the energy bill. A clogged air filter, worn separator or dirty cooler increases flow resistance and operating temperature - the machine draws more power to deliver the same amount of air. Regular maintenance eliminates this growing cost and identifies bearing wear before it causes the airend to seize.
We set intervals based on the operating hours recorded by the controller, not the calendar. A machine running for 7000 operating hours a year needs a different schedule from one that builds up pressure for two hours a day. Below is the typical service framework we use as a starting point for planning.
Every 500-1000 operating hours
Checking oil level and condition, air filter cleanliness, operating pressures, condensate drains and housing tightness. A brief set of checks, usually combined with routine maintenance.
Every 2000 operating hours or once a year
Replacing the air and oil filters, checking belts or the coupling, cleaning coolers, checking the inlet valve, and measuring current draw and operating temperature.
Every 4000-8000 operating hours
Changing the oil and oil separator, inspecting the minimum pressure valve and non-return valve, checking airend clearances, and inspecting the cooling and control systems.
Every 24 000-40 000 operating hours
Assessing whether the machine requires a planned overhaul: airend bearings, shaft seals, motor and coolers. A planned overhaul is always less expensive than an overhaul after seizure.
Service report
Every service concludes with a document that the customer keeps. The report includes:
- a list of work performed and components replaced,
- operating hour readings for loaded and unloaded operation,
- measured pressures, oil and air temperatures, and current draw,
- observations on the condition of the compressor room, filtration and dryer,
- the date and scope of the next service, calculated from the machine's actual operating hours.
The readings collected this way form the machine's history. After two or three services, trends become visible: rising oil temperature, gradually increasing current draw or shorter intervals between loading cycles. This is the earliest indication that an overhaul should be planned rather than waiting for downtime.
Breakdowns and response times
A stopped compressor usually brings the entire production process to a halt, so we handle emergency calls 24/7. The first step is a technical discussion: brand, model, power rating, operating hours, controller fault code and a description of the symptoms. This allows us to narrow down the likely causes and gather parts before setting off, rather than losing a day travelling solely to diagnose the problem.
The most common faults are temperature alarms, failure to build pressure, excessive oil carryover, oil leaking from the shaft seal, and frequency converter or motor protection faults. Some can be repaired on the first visit; others require a component to be ordered - in that case, we state the delivery date and realistic downtime upfront instead of making a vague promise of a quick repair.
If a repair is expected to take more than one day, we offer a replacement compressor matched to your machine's power rating. We deliver it, connect it to the existing system and commission it, keeping production running while the main machine is repaired thoroughly and properly, without shortcuts under time pressure.
Facilities with a service agreement receive priority. We know their machine history, settings and spare parts stock, so telephone diagnosis is quicker and our technicians arrive with the right equipment from the outset. Emergency number: +48 733 140 488.
We service more than 30 brands
As an independent service provider, we work on machines from all popular screw compressor manufacturers. For selected brands, we have dedicated pages describing the scope of work and faults typical of their designs:
- Service Atlas Copco
- Service Kaeser
- Service BOGE
- Service Airpol
- Service Airpress
- Service Ingersoll Rand
- Service CompAir
- Service Renner
- Service Almig
- Service Gardner Denver
- Service ALUP
- Service Ceccato
- Service Ekomak
- Service Fini
We also service brands including:
- Worthington
- Abac
- Mark
- Gudepol
- Power System
- Fiac
- Hitachi
- Sullair
- Quincy
- Balma
- Dalgakiran
- Shamal
- Dari
- Chicago Pneumatic
- Aerzen
- Pneumofore
- Elgi
- Kaishan
- SCR
Related services
Servicing is one part of maintaining a compressor room. In practice, it is most often combined with other work that we also carry out:
- Screw compressor overhaulsReconditioning the airend, bearings and seals when routine servicing is no longer enough.
- Compressor hireA replacement machine matched to your air demand while the main compressor is being repaired or overhauled.
- Service agreementsRegular service dates managed by us, with a documented machine history.
- Compressed air system auditMeasurement of energy consumption and the compressor room operating profile, with a list of recommended actions.
- Leak detectionUltrasonic leak detection with losses calculated in PLN/year.
- Filtration and treatmentSelection of filters and ISO 8573-1 purity classes, with filter element replacement during servicing.
- Dryer servicingRefrigeration and adsorption dryers: repairs, desiccant and dew point.
- Spare partsOriginal (OEM) parts or proven aftermarket alternatives - according to the customer's preference.
- Compressor heat recoveryHeat from the compressor cooling system used for space or water heating.
Contact
Need an inspection, overhaul or rental? Fill out the form - we'll respond within 24 hours.
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ul. Słowackiego 201 26-600 Radom Mazovian Voivodeship, Poland