Refrigeration Systems

The number of cold storage warehouses in Georgia keeps growing, and with it the demand for refrigeration system servicing. Managing that service properly matters a great deal: poorly performed work, unqualified staff and wrong decisions can damage your refrigeration system, which can lead to significant losses for your organisation.

Our company, an active member of the Georgian Association of Refrigeration, Cryogenic and Air Conditioning Engineers (GARCAE), offers the full service cycle: design, equipment selection, supply, installation and after-installation service of cold stores and refrigeration systems tailored to your needs.

We carry out full diagnostics of these systems and facilities, prepare a cost estimate of the work and materials needed to fix the problems, and provide full service: a technical inspection of the whole system, washing and cleaning of evaporators and condensers, checking pressure, temperature and electrical parameters against the manufacturer's operating values, refrigerant leak testing, and where needed, recovering the refrigerant from the system, having it analysed in a laboratory, and then replacing it and/or charging it back into the system based on the results.

Before recharging, the system is pressurised with nitrogen so that it dries out thoroughly and passes a final leak test.

• Leak testing: nitrogen creates high pressure in the system, revealing micro-cracks and poorly brazed or badly joined spots. Because nitrogen's volume changes far less with small temperature swings than refrigerant does, the pressure-drop test is much more accurate.
• Preventing oxidation (soot and scale) during brazing: when copper pipes are brazed at high temperature with oxygen inside, copper oxide forms as black scale and soot. These particles later break away, travel through the system and clog filters, capillary tubes and thermostatic expansion valves (TXV). A constant low-pressure nitrogen purge while brazing drives out all the oxygen and leaves the pipe perfectly clean inside.
• Flushing the system and removing contaminants: during repairs (for example after a compressor burnout or when reusing old pipework), blowing high-pressure nitrogen through the system after special flushing fluids effectively clears out old oil, acids and physical debris.
• Removing moisture and drying: nitrogen is an artificially dried gas. Passing it through the system absorbs moisture left on the pipe walls and physically carries it out, which makes evacuation much easier.
• Triple evacuation: a vacuum pump alone is often not enough to reach a deep, high-quality vacuum, especially in large systems or when a lot of moisture has entered. We use triple evacuation: between evacuation stages we break the vacuum with nitrogen at low pressure. The nitrogen mixes with the remaining non-condensable gases and water vapour, so the next evacuation removes them easily.

We then charge the system with refrigerant and oil again and restart it, followed by optimisation and testing. Once the system passes the new tests and runs smoothly, we upload the work records to the portal so the facility we service complies with the standards required by law.