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Mechanical foot switch: The use of mechanical structure to achieve switching action, with simple structure, low cost, high reliability characteristics, suitable for some control accuracy requirements are not high occasions.
Pneumatic foot switch: Through compressed air as a power source, control the action of pneumatic components, so as to achieve the control of equipment. It has the characteristics of fast action, great strength, and suitable for harsh environment.
Electronic foot switch: The use of electronic components and circuits to achieve the switch function, with high sensitivity, high control accuracy, can achieve a variety of functions and other characteristics, suitable for high control requirements occasions.
The following are common faults and solutions of foot switches:
Poor contact

Fault performance: When the foot switch is not working, sometimes the pedal equipment does not respond, or the equipment is unstable, and the situation is intermittent.
Cause analysis: It may be that after a long time of use, the surface of the contacts inside the switch is oxidized, accumulated dust or dirt, resulting in increased contact resistance; It may also be that the connection cable is loose, and the plug socket is in poor contact.
Solution: First turn off the power, open the device shell, check whether the cable is loose, if loose, reinsert and tighten; In case of oxidation or dust accumulation of the contact, the surface of the contact can be lightly polished with sandpaper to remove the oxide layer, and then wiped with a clean cloth; If the plug socket contact is poor, can be replaced with a new plug socket.
Switch failure
Fault performance: the foot switch completely fails, no matter how to step on the pedal, the device has no reaction.

Cause analysis: The mechanical parts inside the switch, such as spring and transmission rod, are damaged, resulting in the failure to trigger the contact action normally; Or the contact itself is seriously worn and cannot achieve good contact and separation.
Solution: If the mechanical parts are damaged, you need to disassemble the foot switch and replace the damaged spring, transmission rod and other parts; If the contact is seriously worn, then

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