Module Replacement - ESAB MTS 3500i Mode D'emploi

secTIoN 4
4.4 module Replacement
When mounting modules on a heatsink, certain precautions should be taken to prevent any damage against a sudden
torque. If a sudden torque ("one-sided tightening") is applied at only one mounting terminal the ceramic insulation plate
or silicon chip inside the module may get damaged.
The mounting screws are to be fastened in the order shown in Figure 4-1. Also, care must be taken to achieve maximum
contact (i.e. minimum contact thermal resistance) for the best heat dissipation.
Application of a thermal compound / pad on the contact surface improves its thermal conductivity. Use Dow-340 Heat Sink
Compound or equivalent. See Replacement Parts section for the required pad.
A torque wrench should be used. Tighten mounting and terminal screws per Torque Requirements shown in Subsection 6.3.
If device is over-torqued, the device can be damaged like the above "one-sided tightening".

Two-Point Mounting Type
Initial tightening  


Final tightening  



figure 4-1. screw fastening order
Four-Point Mounting Type
Initial tightening  
 Final tightening  

80
mAINTeNANce
  
  
  
  

