Proper use of water pump

1, starting

(a) determine whether the rotation direction of the motor is correct and the rotation of the pump is flexible before the connection between the pump and the machine (or check the rotation of the motor after the pump is filled with water; it is forbidden to idle without water in the pump)

(b) close the gate valve on the discharge line.

(c) fill the pump with water or use vacuum pump to divert water.

(d) turn on the power, and gradually open the gate valve on the discharge pipe when the pump reaches the normal speed, and adjust to the required condition.When the gate valve on the discharge pipe is closed, the continuous working time of the pump shall not exceed 3 minutes.

2, stop,

(a) gradually close the gate valve on the discharge line and cut off the power.

(b) if the ambient temperature is lower than 0℃, the pump water should be released to avoid freezing crack.

(c) if the pump is out of use for a long time, it shall be disassembled, cleaned, greased and packed for safekeeping.

3, run

(a) in the process of starting and running, it is necessary to check whether the meter reading, bearing temperature rise, packing drip and temperature rise, pump vibration and noise are normal, and timely deal with any abnormal situation.

(b) the difference between bearing temperature and ambient temperature is not more than 40℃, and the maximum rise of bearing temperature is not more than 80℃

(c) packing leakage should be small and uniform.

(d) the bearing oil level should be kept in the normal position and should not be too high or too low. If it is too low, the lubricating oil should be added in time.

(e) replace the sealing ring with a new one if the clearance wear between the sealing ring and the impeller is too large (the diameter clearance of the new pump is about 0.15-0.25mm).

(f) the pump shall be operated near the performance points (flow, head, etc.) specified on the nameplate as far as possible, so that the pump can work in the high-efficiency area for a long time to achieve the maximum energy saving effect..

水泵的正确使用方法
1、起动
    (a)在机泵联接前确定电动机的旋转方向是否正确,泵的转动是否灵活(或在泵内注满水后检查电机转向,严禁泵内无水空转)
    (b)关闭吐出管路上的闸阀。
    (c)向泵内灌满水，或用真空泵引水。
    (d)接通电源，当泵达到正常转速后，再逐渐打开吐出管路上的闸阀，并调节到所需要的工况。在吐出管上的闸阀关闭的情况下，泵连续工作的时间不能超过3分钟。
    2、停止
    (a)逐渐关闭吐出管路上的闸阀，切断电源。
    (b)如环境温度低于0℃，应将泵内水放出，以免冻裂。
    (c)如长期停止使用，应将泵拆卸清洗上油，包装保管。
    3、运转
    (a)在开车及运行过程中、注意观查仪表读数、轴承温升、填料滴漏和温升以及泵的振动和杂音等是否正常，如果发现异常情况，应及时处理。
    (b)轴承温度与环境温度之差不的超过40℃，轴承温升大于80℃
    (c)填料漏水应该是少量均匀的。
    (d)轴承油位应保持在正常位置上，不能过高或过低，过低时应及时补充润滑油。
    (e)如密封环与叶轮配合部位的间隙磨损过大应更的密封环（新泵的直径间隙在0.15~0.25mm左右）
    (f)应尽量使泵在铭牌规定的性能点（流量，扬程等）附近运转，这样可使水泵长期在区工作，以达到节能效果。