Safety requirement EN 1.6 Care and Cleaning Care： When storing or placing the internal resistance tester, do not expose the LCD display to direct sunlight for a long time. Cleaning： According to the requirements of operating conditions, regularly check the internal resistance tester and test line. Please clean the outer surface of the instrument according to the following steps： 1) Use a lint free cloth to remove floating dust from the outside of the internal resistance tester and test line. Please be extremely careful to avoid scratching the smooth display filter material. 2) Clean the internal resistance tester with a soft cloth soaked in water.
To clean more thoroughly, a water solvent of 75% isopropanol can be used. Note： To avoid damaging the surface of the internal resistance tester or test line, do not use any corrosive or chemical cleaning agents. Warning： Before re powering on, please confirm that the instrument has dried thoroughly to avoid electrical short circuits or even personal injury caused by moisture. Copyright © Qingdao Hantek Electronic Co., LTD HBT3000 series user manual 7