Loosen scale retaining ring and remove turnindicator assembly.
松开刻度固定环，拆卸旋转指示器总成。
2
Loosen the scale retaining ring and rotate the turnindicator scale to align with the " 0 " on the handwheel. tighten the scale retaining ring by hand. do not overtighten.
松开刻度上的固定环，旋转指示器刻度使其对齐手轮上的「 0 」 。用手紧固刻度上的固定环。不要过紧。
3
If flow rate is in excess of that specified, turnindicator towards closed position, noting pressure drop and valve setting and determining new flow rates from flow rate chart.