Accessing Modules For Testing; Removing/Replacing The Bezel; Removing/Replacing The Cpu Module - Emerson ControlWave EFM Instruction Manual

ControlWave EFM Instruction Manual
Caution

5.2.1 Accessing Modules for Testing

5.2.2 Removing/Replacing the Bezel

5.2.3 Removing/Replacing the CPU Module

5-6
Field repairs to ControlWave EFMs are strictly limited to the
replacement of complete modules. Replacing module components
constitutes tampering and violates the product warranty. Return
defective modules or housings to the factory for authorized service.
Only technically qualified personnel should test and/or replace EFM
modules. Read completely the disassembly and test procedures
described in this manual before starting. Any damage to the
ControlWave EFM resulting from improper handling or incorrect
service procedures is not covered under the product warranty
agreement. If you cannot properly perform these procedures, obtain
authorization and then return the device to the factory for evaluation and
repairs.
Grasp the sides of the bezel assembly and gently lift it up and then
1.
off its associated I/O module covers.
2. To replace the bezel, align the latches (left and right, top and
bottom) with the associated notches in the I/O module cover. Press
the bezel in so that the notches capture its latches and slide it
downward until it securely seats.
Use this procedure to remove or replace the CPU module.
If the EFM is running, place any critical control processes under
1.
manual control.
2. Shut down the EFM by disconnecting power from the system
controller module (SCM).
Disconnect any CPU module communication cables. Label or
3.
otherwise identify them so you can easily return them to their
assigned communication ports. .
Press down on the cover's built-in top latch (with one hand) and
4.
up on the cover's built-in bottom latch (with the other hand).
5. Carefully slide the CPU module out of the front of the housing.
If any binding occurs, gently rock the module up and down to
free it.
To replace a CPU module, power must be off. Carefully align
6.
the CPU module with the guides for slot 2 in the EFM and insert
the module into the housing. When the module correctly seats,
its cover should latch to the housing.
Service & Troubleshooting Revised Dec-2013