2. Root Causes on Fusion 1. Bad stability of cooling system. 2. Bad stability of Digital DC power supply. 3. Low reliability of relay on pin card . Top 3 problems !

3. Cooler introduction

4. Cooler stability problem It could not be cooled effectively ! Flow sensor Filter Snubber Air in the water Leak

5. Cooler stability problem This sensor measure the flow rate of cooling water inside the cooler. Filter , it is filtering the water and remove some of its impurities. Snubber : It protect the sensor . Leak : it damage Pin card, FARMNT board and T/H backplane Too much air in the cooling water, would decrease its effect!

6. Five problems analysis 五大問題分析

7. How to find the solutions of cooler problem ? 原廠鋁質 ColdPlate 與不同水質之驗證 According to LTX stand service manual, use distill water and bleach could prevent the Biologicalgrowth . What we should improve is this

8. What kind of Cold Plate is good for distill water and bleach ?

13. Standardization

14. Conclusion Cooler down : 27 times/year -> 1 times/year Saving : $ 33,340 / year Power Fan Defect : 15 times/year -> 0 time/year Saving : $ 3250/year Relay Repair: , 57 times/year -> 1 times/year Saving : $ 68,400/year

15. The End .