Procedure for mounting/dismounting EC and PDMDB on the T-bar (comments are welcome).
Mandatory general rules for production assemblies.
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.
NOTE: 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