4. 泵的运行与维护
● 水泵、电机应无异常声响，润滑情况良好；
● 泵及电机的振动不超过0.06mm；
● 定期检查油质、油位，更换或添加润滑油；
按照设备切换制度，倒换备用泵。
● 泵的切换运行
先合上备用水泵电源开关，待水泵出口压力稳定后缓慢开启水泵出口阀，调整出口流量正常；然后
关闭原运行泵的出口阀，再停运原运行的水泵。
水泵的运行监督
每2小时记录泵的出口压力一次；
每2小时检查电机电流及电机温升一次，温升应不大于60℃，轴承温度应不超过80℃；
每班检查水泵油箱油位、油质一次，油位应正常，油质应良好；
水泵的转动部件和电机内部无异音；
增加水泵流量时不应使压力降落太大，以避免电机超负荷；
水泵的冷却水应畅通；
电缆头应无发热、漏电、漏油等现象；
及时检查泵运行情况，发现异常及时处理。
5. 离心泵的故障处理
● 泵及电动机在运行中发生下列情况，应立即停止运行：
发生人身事故；
电动机轴承冒烟或起火；
泵及电动机发生剧烈震动、窜动及异常声响；
水泵内有明显的金属声和撞击声；
泵壳破裂大量漏水或盘根严重发热；
电动机或轴承达到极限温度。
现象 可能原因 排除方法
水泵打不出水 ①入口阀未打开或阀芯脱落 ①全开入口阀或联系检修
②水箱无水或水位低 ②提高水箱水位
③泵内有空气 ③排除泵内空气
水泵出力不足 ①水泵密封环或叶轮磨损过多 ①检修更换零件
②进口底阀、进口管道或叶轮有异物堵塞 ②停泵由检修人员清理异物
③旋转方向错误 ③通知检修人员改变电动机接线
轴承过热或有杂音 ①油质不良 ①更换新油
②加油不足或加油过多 ②调整加油量
③轴承磨损或松动窜动 ③进行检修
④轴中心不正 ④停止运行，通知检修
水泵振动大 ①泵内有空气或出口阀开度过小或泵体温度高 ①排除泵内空气，开大出
口阀
②地脚螺丝松动 ②紧地脚螺丝
③电动机和泵轴不平衡或轴承和转动部分严重磨损 ③停泵检修
④管道支架固定不牢 ④加固支架
⑤转动部分零件松弛 ⑤紧固松弛部分
● 加药泵的故障处理
现象 可能原因 排除方法
完全不排液或排液不足 ①电源或电机缺相 ①检查保险丝、接触器、电机绕组接线
②出口阀未开 ②打开出口阀门
③入口管道漏气 ③压紧或更换法兰垫片
④入口管道阻塞 ④清洗疏通入口管道
⑤柱塞密封泄漏严重 ⑤调整填料压盖或联系检修更换填料
⑥吸入或排出球阀坏，落入异物 ⑥联系检修处理
运动件过热 ①充油腔内有气体 ①人工补油使安全阀跳开排气
②充油腔内油量不足或有杂物 ②经补偿阀作人工补油或排油
③补偿阀或安全阀漏油 ③对阀进行研磨
④填料压得过紧 ④调整填料压盖
排出压力不稳定 ①吸入或排出阀内有杂物卡住 ①反冲吸入、排出阀
②隔膜限制极限或排出管连接处漏液 ②拧紧连接处螺丝
③补偿阀或安全阀动作失灵 ③按安全补油阀组的调试方法进行调整
计量精度不够 ①充油腔内有残余气体 ①人工补油使安全阀跳开排气
②补油阀或安全阀动作失灵 ②按安全补油阀组的调试方法进行调整
③柱塞密封填料漏液 ③调整或更换密封圈
④隔膜片发生永久变形 ④更换隔膜片
⑤吸入或排出阀磨损 ⑤更换新阀
⑥电机转速不稳定 ⑥稳定电源频率和电压
运行中有冲击声 ①传动零件松动或严重磨损 ①联系消缺
②吸入高度过高 ②降低安装高度
③吸入管道漏气 ③压紧吸入法兰
④隔膜腔内油量过多 ④轻压补偿阀作人工瞬间排油
⑤介质中有空气 ⑤排出介质中的空气
⑥吸入管径太小 ⑥增大吸入管径
4. Operation and maintenance of pump
●The water pump and motor shall free of unusual sound; the unit lubrication shall be
good;
●The vibration of pump and motor shall not be greater than 0.06mm;
●Inspect the oil material, oil level, replacement or feeding the oil in a regular
interval;
Replaces the backup pump according to the equipment replacement system,.
●Switching operation of pump
Closes the spare water pump power switch first, then open the water pump outlet valve
slowly when the water pump outlet pressure is stable; adjust the rate of discharge to
a normal level; closes the outlet valve of the original operating pumps and shut down
the original operating water pump.
Operating surveillance of water pump
Records pump outlet pressure every 2 hours;
Inspect the motor current and temperature rise every 2 hours; the temperature rise
shall not be greater than 60℃,; the bearing temperature shall not be greater than 80
℃;
Inspects the oil level of fuel tank of water pump and oil material one time for each
shift; the oil level shall be normal and the oil material shall be good;
The rotating part of water pump and interior motor shall free of abnormal sound;
Do not cause pressure drop abruptly to avoid the over load of motor while increasing
the flow rate of water pump;
The discharging of cooling water of water pump shall be free;
Cable head shall free of phenomena of heating, electric leakage and oil leakage;
Inspects the operating situation of pump in time and applies the relevant measure in
case of abnormal condition.
5. Centrifugal pump failure treatment
●It is required to shut down the operating in case of the following situation of pump
and motor during the operation:
Accident of personal injury;
Smoke or fire of motor bearing;
Fierce vibration, abnormal movement and sound of pump and motor;
Obvious metal sound and the impact noise inside the water pump;
The pump body crack to cause massive water leakages or serious heating of unit
foundation;
Motor or bearing reaches to a limited temperature.
Situation Possible reason Troubleshooting method
The water pump could get no water ①The inlet valve has not opened or the valve
core falls off ①Opens all inlet valves or contacts repairing department;
②The water tank has no water or the water level is low; ②Raises the
water level of tank;
③There is air in the pump ③Remove the air from the pump
Insufficient output power of water pump ①The sealing ring of water pump or
impeller is serious wear out ①Repairs or replaces the components
②Foreign bodies blocked in the foot valve, inlet pipeline or impeller;
②Shut off the pump and informs the repairing personnel to clean up the foreign
objects;
③wrong side of rotation ③Informs the repairing personnel to change
the wiring of motor;
The bearing is overheat or has the noise ①The oil material is not good ①
Replace to fresh oil
②Oil is in short supply or has too much oil; ②Adjusts fuel charge;
③Bearing is worn out, loose or has an erratic action ③Repairing
④The axis is not in a center place; ④Shuts off the operation and informs
to the repairing personnel;
Greater water pump vibration ①There is air in the pump or the opening of outlet
valve is insufficient or the temperature of pump body is high ①Removes the air of
pump; turns up the outlet valve
②The foot screw is loose ②Tight the foot screw
③Motor and pump shaft is unbalanced or bearing and movable part is serious
worn out ③Shuts off the pump and repairs
④The pipe supporting is not firmly fixed ④Strengthening the
supporting;
⑤The movable part is loose ⑤Strengthening the loosing part;