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Circuit diagram
Introduction of main components
Fan switch (temperature control switch)
1. Working principle
The fan switch is actually a kind of heat sensitive switch. When the temperature rises, the
paraffin expands and pushes the moving contact to move. The paraffin expansion
coefficient is proportional to the temperature. When the temperature reaches a certain
value, the moving contact will be connected with the static contact; When the temperature
drops, the moving contact is disconnected from the static contact under the action of spring
force. The fan switch on and off controls the operation of the fan.
2. Basic parameters
Operating
temperature
of
switch:
opening
temperature 88 ℃ ± 3 ℃, close 80 ℃ ± 3℃
Rated working current: DC 12V 5A.
3. Possible failures
The switch is normally on;
The switch cannot be connected;
The temperature deviation of the switch operation is too large;
The insert is rusted and has poor contact.
Fan assembly
1. Working principle
The fan assembly is composed of fan motor, fan leaf and bracket. The cooling fan of
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