Submersible water pumps problems analysis and solutions

Submersible water pumps problems analysis and solutions

In the operation process of takeaway: submersible water pump flow rate is insufficient or not the cause of the water and processing methods:(1) the pump installation height is too high, not enough impeller submersion depth, led to the decrease of the water pump water yield; Control water pump installation elevation of allowable deviation, cannot expand at will.(2) the pump to the contrary, the pump test run before idling motor, check to make it consistent with the water pump;

In the process of using the above situation should check whether the power phase sequence change.(3) the water valve cannot be opened. Check valves, and often the valve for maintenance.(4) water line is not clear or impeller be blocked. Cleaning pipe and impeller clogs, often salvage reservoirs sundry.(5) the lower pump abrasion and circle serious or be sundry jam. Clear clutter or replace wearing ring.(6) excessive pumping liquid density or viscosity is too high.

To find the cause of the water quality change and governance.(7) loss or damage to the impeller. Reinforcement or the change of the impeller.(8) pumps more common, the output of the line is not installed a one-way valve or one-way valve seal is lax. Check the reason after add or replace a one-way valve.

In lien, submersible pump have abnormal vibration and unstable operation, the main reason:(1) the pump base anchor bolt not tight or loose; Tighten all bolts in(2) the water pipeline without independent support, pipeline vibration affects the water pump; To pump water pipe set independent firm support, don't let the water pump outlet pipe flange bearing.(3) loose impeller unbalanced quality and even damage or installation;

Repair or replace the impeller(4) the pump up and down bearing damage; Replace water pump bearing up and down. To, cause too much electricity pump motor overload or over temperature main reason:(1) the working voltage is too low or too high; Check the power supply voltage, adjust the transmission pressure.(2) the pump internal brushed against any noise components or the impeller and the sealing ring friction;

Judge friction parts position, eliminate the fault.(3) low head and large flow produce motor power do not tally with the pump characteristic; Adjust the valve to reduce traffic, make the motor power match the pump.(4) the pumping of density is larger or high viscosity; Check water quality change, change the water pump working conditions(5) bearing damage, Change at the ends of the motor bearings Looking, submersible pump, low insulation resistance of the main reasons and processing methods:(1) when the power cord installation end submerged in the water or the power cord, signal wire breakage caused by water; Replace the cable or signal lines, drying machine.(2) mechanical seal wear or not installed;

Replacement of mechanical seal up and down, drying machine.(3) the o-rings aging, not work; Replace all ring, drying machine. All measures, submersible pump, pipe, pipe or flange connection, often have obvious seepage phenomenon reason and processing methods:(1) pipe itself is flawed, without pressure test;(2) of the flange joint gasket joint did not handle;(3) of the flange bolts not tighten in reasonable way; Repair or change, must be paid to the defective pipe butt joint of the pipe at the center of the deviation is too large to be torn down rearrangement, alignment after connecting bolts should be under the conditions of basic liberties, insert and tighten all piping after the installation, should carry on the compressive strength and seepage experiment system.

Must be replaced new one. submersible pump internal leakage: Submersible pump leakage occurs, leading to insulation damage, bearing of flooding, alarm system alarm, forcing the unit stop running. Submersible pump is the key reason: the dynamic seal, mechanical seal or static seal (cable imported special type sealing ring seal, 0) damage caused by water penetration, power cable and signal cable damage caused by water penetration. All kinds of alarm signals such as flooding, leakage, humidity alarm downtime;

Before the installation, should check the sealing parts quality. When installation, must guarantee the sealing parts face good contact; Before running and check the motor insulation resistance and grounding and the alarm system of sensor components are in good condition. Occurred during the operation of the above failure, replace all damaged seals and cable and drying machine. To remove the seal and the cable shall not be used again.㈦ submersible pump back when stop:1, the water pump motor pump reversal will happen when the power is cut off, the main reason is that the water pipes in the check valve or door to failure.2, elimination measures before installation should be checked