Advertisement
Power Automation and Protection Division
13. NORMAL PRECAUTIONS
Troubleshooting is not recommended due to the sophistication of the Microprocessor unit.
With the exception of checking to insure proper mating of connectors, or setting
jumpers, the following procedures are normally not recommended. (If there is a
problem with the REL 352, it should be returned to the factory. See PREFACE.)
14. DISASSEMBLY PROCEDURES
a. Remove the inner chassis from the outer chassis, by unscrewing the lockscrew (on
the front panel), and unsnapping the two covers from the FT-14 switches.
NOTE:
b. Remove the FT-14 switches, mounted by two screws on the side walls.
c. Remove the front panel (with the Display module) from the inner chassis, by un-
screwing four screws behind the front panel.
d. Remove the Microprocessor module, by loosening six mounting screws, and un-
plugging the module from the Interconnect module.
e. Remove the Relay Output and Contact Input modules by unscrewing 2 mounting
screws from the brackets and unplugging these modules from the Interconnect
module.
f.
Remove the Power Supply and Analog Input modules, by first removing the Micro-
processor module and the support cross bar.
g. Remove the Backplate, by unscrewing the mounting hardware from the rear of the
Backplate.
REL 352 Version 1.00
!
CAUTION
The inner-chassis (sub-assembly) slides in and out of the outer chassis from
the front. Mating connectors inside the case eliminate the need to disconnect
external wiring when the inner chassis is removed.
I.L. 40-201.9
4
4-11
Advertisement
