Thermal links/resistor assemblies (Caution to be observed when installing thermal links)

Precautions on installation of Thermal links/resistor assemblies

  1. Axial stress (tensile and thrust) on the lead must never exceed the force of the maximum tensile force of 5.65N and the maximum thrust force of 1.41N. Stress exceeding these values may cause premature failure of the Thermal links/resistor assemblies. Those forces are calculated from diameter of built-in thermal link’s lead wire according to EN60691,UL60691.
  2. Be careful not to hold the Thermal links/resistor assemblies body forcibly, causing it to be damaged, or to apply any strong shock. Otherwise, performance failure may occur.
  3. Do not attempt to wash the Thermal links/resistor assemblies with water or solvent. Where such cleaning method is absolutely necessary, perform a confirmation test in advance.
  4. Do not hold the lead wire with a sharp-edged tool, causing it to be damaged or bent acutely.
  5. Do not twist, pull or push the lead wire diagonally.
  6. When bending the lead wire, bend slowly ensuring to avoid any force applied to Thermal links/resistor assemblies.
  7. Install the Thermal links/resistor assemblies in such a manner that no force is applied to the body or lead wire of the Thermal links/resistor assemblies after installation.

Precautions on soldering, splicing and welding of Thermal links/resistor assemblies

  1. When soldering the lead wire of the Thermal links/resistor assemblies, be sure to perform a soldering condition confirmation test in advance, as the built-in thermal links may operate, depending on the soldering condition.
  2. The maximum soldering time when soldering one lead wire of the Thermal links/resistor assemblies at a length of 10mm from the soldering bath (300℃) is 5 seconds.
  3. When re-soldering due to soldering failure, or when re-welding due to welding failure, be sure to leave it for a minimum of 60 seconds for cooling before attempting re-soldering or re-welding.
  4. When making a connection by splicing or welding, measure each weld as well as connection by splicing, for electric resistance using a low-ohmmeter to check the connection conditions.