1. How to identify hard water and soft water:
Pour the water sample into the test tube, add a small amount of the prepared transparent soap solution, shake it while addition and observe carefully. If the water solution does not appear cloudy and the foam generated on the surface of the solution does not disappear after 5 minutes of stopping, the measured water sample can be judged to be soft water, otherwise it's hard water.
2. How to identify temporary hard water and permanent hard water:
Pour an appropriate amount of water sample into a beaker, heat it and boil it, then let it sit for some time. a few minutes. Observe carefully. If you find precipitation in the water, it is concluded that the water sample is temporarily hard water, if there is no precipitation, the water sample can be removed and poured in a test tube add a small amount; of soPrepared clear soap solution and shake gently while adding. If the water sample becomes cloudy, and after stirring, the foam generated disappears quickly, it can be concluded that the water sample is permanently hard water.
3. Water requirements for industrial washing machines: pH value: 6.5--7; Total hardness: not more than 25 ppm; Iron: not more than 0.1 mg/L. Manganese: not more than 0.05 mg/L. .
4. If you encounter a problem that we cannot repair, you must find or deliver it to the after-sales service agency of the specialist manufacturer, or have it repaired by specialist personnel authorized by the specialist manufacturer.
Guangzhou. According to Baidu's map query, the second-hand market for industrial washing machines in Guangdong province is in Guangzhou. The second-hand market in Guangzhou is very developed. There are many second-hand trade markets and eq suppliersused equipment that can offer different types of used industrial washing machines. In the second-hand market in Guangzhou, you can find used industrial washing machines of different brands, models and specifications at reasonable prices.