ASTAT ®-IBP Plus Service Instructions
7.Lift out the SCR Module, as shown in Figure 21. Retain all parts and hardware for reassembly with the replacement Module.
8.Remove the threaded stud from the SCR Module and attach it to the new Module. Tighten to 200 in- lb torque.
9.Clean the heat sink surface of the replacement Module with a fine abrasive, such as Scotchbrite. Remove all particles from the heat sink surface and wipe the SCR mounting surface with a mild solvent. Apply a light coat of thermal grease, such as Electrolube 2GX to both the SCR and heat sink surfaces.
10.Place the new SCR Module in the proper position on the mounting surface. Move the Module back and
| forth several times to evenly distribute the grease on | Figure 21. Removing the SCR Module from the mounting plate.. |
| the plate. | |
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11. | Secure the SCR Module to the mounting plate with |
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| the screws removed earlier. Tighten the screws to 44 |
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12. | Reattach the |
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| CT, if applicable. Tighten the mounting bolts to 200 |
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13. | Reattach the busbars to the SCR Module. Tighten |
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| the mounting bolts to 150 |
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14. | Attach the wiring harness of the new SCR Module to |
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| its mating piece. Attach the harness of the CTs, if |
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| necessary. |
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10 | Prices and data subject to change without notice. |