We still remember at beginning of 2017 year. first day we work,one email came from Philippine,their blast freezer cold room temperature only come -20C,can not come down any more. we still remember the cold room size is L6mxW5mxH3m(90CBM).2 sets of 25HP Bitzer two stage compressor unit.High pressure is 1.2Mpa,Low pressure is 0.2Mpa.its normal at -20C. compressor head has ice.but not over wiring block box.its normal. oil level is normal.too. current 30A.its no problems.we also check the expansion valve. half of part with frost. why the temperature can not come down? finally.we ask them if they load more fresh meat than before.they said they load 6 tons goods this time.we understand why the temperature did not come down.our design is 3000KG fresh meat to be frozen each time.and time is 8 to 12 hours to get -35C.now they do double capacity goods come to cold room. when they move 3000kg out. the temperature come to -35C normal.

Even we met this or that kinds of problems during our productions and shipment and aftersale service.but we have to get experience from the problems and correct it.then we will very easy to find solution next time.we call it refrigeration experience.because we believe any business will have problems. only we help customers to solve it on time.then we can do more business.

Any way. we will make new friends in 2018,but we will need old friends to support us.

Thank you & Happy new year!

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E-mail: info@chinatechco.com
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