HFC to HFO retrofitting
HFC (hydro fluoro carbon) refrigerants like R407c and R134a are being phased down to 21% by 2030. To achieve this, the quota for these refrigerants is being reduced. This, in turn, is making prices go up. Increased servicing costs are making the customer chose a retrofit to HFO. HFO (hydro fluoro olefin) refrigerants, such as, R448a and R513a are still expensive too as the manufacturers are recouping the cost of research and development. HFO prices will come down as HFC will continue to go up
PLCs or Programmable Logic Controllers
Controllers that come with the chiller are quite often finicky and prone to nuisance trip outs. Each time it trips out spuriously it costs you the price of a call out to reset it. The solution is to easily and cheaply fit state of the art Carel controls. Carel specialise in controls: they are user friendly and very reliable. For ammonia chillers we fit Beijer Electronics. The old controller is disconnected and removed. The transducers and sensors are replaced. The new controller is installed and wired in. Program settings come as default so we only need to tweek the odd one. The machine is then run tested and goes into seamless operation with no needless trip outs
As above, if a compressor is not available- a retrofit is required. Compressor retrofits are relatively easy. The capacity in kilowatts is worked out and a compressor of the same capacity is selected. The machine is pumped down and ancillaries removed. A lift and shift is arranged and the compressor is lifted out. The mounting is adapted for the new compressor and the new one lifted in. Pipework is also adapted. After pressure testing, the new compressor is then run tested
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