R-407C

R-407C is a non-azeotropic, zero ozone depleting HFC refrigerant gas blend used in new air conditioning and refrigeration equipment. It is also an indirect substitute (retrofit), in R-22 equipment of positive and medium temperatures.

R-407C is a refrigerant similar to R-22 in terms of working pressures, capacity and energy efficiency for positive and average evaporation temperatures. The original oil (mineral or alkylbenzene) must be drained and replaced with a synthetic POE oil. R-407C has a very high temperature slip, so in case of leakage in the low pressure line (steam), it is recommended not to recharge because the mixture present in the system will be very decomposed and the equipment would not work satisfactorily. The composition of the remaining vapor phase in the containers will have deviated from the product specifications.

Applications:

– Commercial and domestic air conditioning systems in general.

– Rooftop units.

– Coolers.

– Supermarket preservation equipment.

– Food Storage.

– Cold storage rooms.

– Refrigerated transport.

– No harm to the ozone layer, ODP = 0.

– It requires the replacement of mineral or alkylbenzene oil with POE synthetic oil.

– They allow the maintenance of existing equipment.

– In case of leakage, empty and carry out a new full charge.

– Lower discharge temperatures than R-22, which extends the life of the compressor.

– It achieves similar cooling capacity and energy efficiency to R-22 in most systems.

– Global Warming Potential (GWP): 1774

– Boiling point at 1.013 bar (ºC): -43.5

– Temperature glide or glide (ºC): 7,4

– Saturated vapor density at 25ºC (kg/m3): 43.33

– UN NO.: 3340

– Safety classification: A1. Low toxicity and non-flammable.

– Always load in liquid phase.

When R-22 was banned in new equipment, equipment manufacturers took advantage in many cases of the same production lines of R-22 air conditioning equipment to continue manufacturing them for R-407C but this time with synthetic POE oil instead of mineral oil. Not recommended for flooded evaporators or centrifugal compressors.