分类： 信息化
2014-03-12 15:28:03
is a thermostat, heated to the temperature of the thermostat switches off the set, below the set temperature range is closed again after heating. Storage-type electric water heater is composed of two pieces of metal with an arc line components. Is made according to the principle of thermal expansion, the expansion of hot water open switch contact, opening the main circuit short, a mechanical switch, which element is relatively easy fault.
Source:
