TOHATSU V20D2S - Hydrant Operation and Post-Operation Draining

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PRIME AND DISCHARGE
Be sure not to close the discharge valve and nozzle of any pumps
until all the pumps stopped and the fire hydrant on-off valve is
closed..
8. Set the discharge valve to the half-open position, and open all the drain valves to
drain the remaining water in the pump as maintenance after operation.
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