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With the machine turned off, remove the two (2) screws securing the card cage into the cabinet (see Figure 3). Slide the card cage out the front of the cabinet a few inches. Figure 3 Note: The middle panel has a ground wire attached. Take care not to damage this wire when removing the panel.
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Once all four screws have been removed, the shunt assembly will be free of the cabinet. However, there will be a ground wire still attached within the shunt assembly. The ground wire screw (white arrow in Figure 6) can only be removed once the shunt box is free of the cabinet.
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4.12 With the shunt door still closed, locate and remove the shunt switch cover screw using the arrow in Figure 9 as reference. Retain this screw. Figure 9 – Shunt Switch Cover 4.13 Carefully open the shunt door so the shunt switch cover can be removed out of the top of the shunt assembly.
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4.15 Once the mounting screw is removed, the shunt switch assembly can be removed out of the top of the shunt box structure. See Figure 12. Figure 12 – Switch Assembly Removal 4.16 With the shunt door still open, slide the new shunt switch assembly (P/N M42408) into the shunt box structure using the noted orientation during removal.
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4.18 Slide the shunt switch cover over the switch assembly and out the back of the shunt box structure as shown in Figure 15. Figure 15 – Shunt Switch Cover Protrusion 4.19 Once the cover is seated properly, close the shunt door and align the shunt switch cover over the threaded hole in the shunt switch assembly bracket.
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Once the machine is out of bypass, open the shunt door and confirm the machine goes into bypass by observing the float in the flow indicator. If there are any questions regarding this bulletin, contact Fresenius Medical Care Technical Support at 800-227-2572 FSB# 15-HOM-001 Rev. A...