Open the three butterfly valves at the inlet of the plunger pump, and respectively energize the three relief valves 1DT, 2DT, and 3DT (the relief valve is for power unloading) and adjust the pressure to the lowest point, and then jog the corresponding motor D1. D2, D3, to ensure that the rotation direction of the 55KW motor is consistent with the required rotation direction of the plunger pump.
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