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TN 55-1905-223-24-11
g. Open backwash water supply valve.
h. Open bleach metering valve.
i. Open external sewage and outlet valves (TM 55-1905-223-24-18).
j. Restore electrical power, start the unit, and conduct run check (paragraph 2-6).
k. Clean any spills with disinfectant.
Figure 2-7. Sediment Tank Cover Torque Sequence.
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