The mechanical installation protocol shall be as follows.

A correct mechanical mounting must be done in many steps.

All the EC shall be installed first on the T-bar and let just a little loose.

The 2 PDMDB shall then be inserted, helping insertion with the minimal movement the EC is allowed.

The 2 PDMDB shall be screwed loose.

The EC screws shall be tightened, while keeping an eye on avoiding possible stresses on the PDMDB.

The PDMDB shall be pushed towards the EC, making sure all connectors mate the same amount, down to the end.

The PDMDB screws shall be tightened just enough to avoid the PDMDB to bounce back.

There is never need to tighten screws too much: screws just keep pieces in place; screws must not deform any PCB; if you hear any crack noise, you have already tightened too much.

-- AlessandroPetrolini - 2017-10-29

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Topic revision: r1 - 2017-10-29 - AlessandroPetrolini
 
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