When the cooling system of a dometic cooling units or Norcold rv fridge fails it is usually due to a rupture in the boiler tube, resulting in that tell-tale yellow residue around the burner area and ammonia smell. Ozark has a unique rebuilding process using heavier wall seamless tubing that won’t fail under thermal stress and can last longer than OEM or Aftermarket replacements. Our rebuilding also includes a re-designed boiler with a low thermal stress design to prevent tube fracture and premature cooling unit failure.
Dometic is highly committed to replacing sodium chromate in refrigeration products and is working hard on the roadmap for substitution. Dometic will only launch new products to the market once adequate testing has been done and they can be sure that the product is safe for consumers and as durable as it is promised to be.
Sodium chromate is used in absorption refrigerators to prevent corrosion of the carbon steel cooling system. There are two manufacturing plants in Europe that use this material: Siegen (Germany) and Jaszbereny (Hungary).
Dometic has been evaluating alternatives to sodium dichromate for several years. This involves both laboratory investigations and service life evaluations in stand-alone cooling units. After extensive tests only one alternative – inhibitor 7 – was able to protect the carbon steel cooling system against corrosion in the same way as sodium dichromate did. This is why it was selected for further testing in actual refrigerators. If the results of the large scale field studies are positive, Dometic will begin to introduce products with inhibitor 7 on the market starting in 2018. This will initially apply to the lowest boiler temperature products and continue gradually over the years to 2029 when all products would be free of sodium dichromate. Nor cold cooling units