GE Industrial Solutions ASTAT-CD Plus Solid-State Starters - Manual (Page 4)

ASTAT-CD Plus Service Instructions
4
To replace Protection Board
NOTE: POWER MUST BE REMOVED
BEFORE SERVICING.
Current
transformers
6- point Terminal
Board
MOVs
Protection Board
Figure 9. Protection Board
Step 13. Remove the cover, Logic Board and Power
Supply Board using steps 1 - 10.
Step 14. Reposition red MOVs as shown. Raise MOVs
and twist so that Protection Board can be
removed over the MOVs (Figure 10).
MOV
Power
Supply
and Logic
Board
assembly
Figure 10. MOV positioning
Step 15. Disconnect the 4 leads from the 2 current
transformers and remove the jumper on pins
1 and 2 on the 6 -point Terminal Board (TB),
located at the top right edge of the Protection
Board. Identify these lead locations to assure
the same connections are made to the 6-
point Terminal Board on the new Protection
Board (Figure 11).
Current
transformer leads
6- point Terminal
Board
Small screwdriver
Figure 11. Removing wires from Terminal
Board
Step 16. Loosen the 6 screws holding the Protection
Board to the main bus bars. Remove the
Protection Board from the ASTAT-CD Plus
(Figure 12).
Remove 6 screws holding Protection Board
Figure 12. Remove screws