In shortStrictly, cryogenic temperatures are below about −150 °C; in practice ultra-low temperature systems between −40 °C and −150 °C are often called cryogenic too. These temperatures cannot be reached with a single compressor: two- or three-stage cascade circuits, special low-temperature refrigerants and oils are used. Below that, cryogenic fluids such as liquid nitrogen are used.
Applications
- Laboratory and biobank ULT freezers (−80 °C / −86 °C)
- Vaccine, pharmaceutical and sample storage
- Food blast freezing tunnels (ammonia or CO₂)
- Industrial cryogenic freezing with LN2 or CO₂
- Low-temperature test chambers and freeze dryer condensers
Service at ultra-low temperatures
- Charges are weighed; a few grams change the achievable temperature.
- Moisture freezes in capillaries and valves, so deep vacuum and new filter driers are essential.
- Oils that stay fluid at low temperature are required.
- Alarms, remote monitoring and backup plans protect samples and products.
Liquid nitrogen systems
Liquid nitrogen boils at about −196 °C. Tanks and filling are the gas supplier's responsibility; we work on mechanical refrigeration, ventilation, oxygen monitoring and control integration of LN2-assisted freezers and tunnels.
Maintenance, repair, installation and projects
- Scheduled maintenance: condenser and evaporator cleaning, compressor and oil checks, pressure and temperature measurements, safety device tests, measured report.
- Fault diagnosis and repair: not reaching set temperature, slow pull-down, high/low pressure alarms, compressor failure, leaks, control and sensor faults.
- Installation and projects: load calculation, system and refrigerant selection, compressor and heat exchanger selection, installation, commissioning and documentation.
- Retrofit and modernisation: conversion to new refrigerants, compressor overhaul, control upgrades, energy efficiency improvements.
We work brand-independent; refrigerant handling is done by F-gas certified technicians.
Our base is in Ankara Etimesgut. We work daily in Ankara and on a project and contract basis across Türkiye. Türkçe sayfa.
Frequently asked questions
Which brands do you service?
We work brand-independent, using the nameplate, circuit diagram and fault records for diagnosis.
Do you work outside Ankara?
Yes. We are based in Ankara and work across Türkiye on a project, contract and scheduled service basis.
Do you also design and install new systems?
Yes. We calculate loads, select the system and refrigerant, install and commission.