Some essential points in using Submersible Electro pump.
1-when carrying out the Electro pump be careful to prevent it from any damage or hit and do not use its shaft for lifting.
2-The Electro pump must be kept vertically in usual temperature dry and clean place.
3-The Electro pump must not be kept useless for a long time because its shaft may lock by effecting of dust and humidity.
4-Before installing the Electro pump its shaft must be examined from longitudinal motion (up and down) point of view and rotation in order to make sure of its working .
5-Before installing the Electro pump make sure of well diameter which must be bigger than Electro pump diameter .
6-Before installing the Electro pump open two Bronze made plugs on top and fill it with drinking water after 30minutes passed saturate the Electro pump with water again .
7-Before coupling set the Electro pump to work in idle running position in order to get confirmed of good working and rotation (anti clock wise rotation).
8-it is recommended to couple the Electro pump vertically in firm and smooth place and do not forget to use a pump strainer .
9-In coupling time set the ring –shaped part of the shaft to touch the coupling exactly and plug the coupling nut in its place then inspect the longitudinal motion and rotation of Electro pump.
10-Because of cooling and lubricating of Bearings by water do not use the Electro pump without water.
11-To prevent the Electro pump working without water a water level controller must be used inside the well.
12-Maximum permissible sand content of water is 25/m
13-The time space between turning on and off must not be less than 4 minutes and delta – start condition must not be more than 4 seconds.
14-if Bimetal (temperature relay) is used in main phase it should be adjusted to 58% of normal Ampere and if become off it must be set to start after professional inspection.
15-When connecting the cable sleeve the place must be cleaned completely and Sea pack must be used for this purpose . Before this operation the well and cables must be examined .
16-Use cable lug and seat to connect cables to starting control panel .
17-It is recommended that all process of coupling Installation and starting of Electro pump must be done by experts and professional staffs.
18-It is recommended that the Electro pump must work at leats 5 minutes in every 10 days.
Table of Troubleshooting and Fixing Submersible Electro pump
Electro pump has no flow capacity
1-Examine wiring system up to Electro pump .
2-Electro motor rotor or pump shaft has been locked.
3-Some solid materials mud or sewage have been entered to the pump.
4-Electro pump or its cable is out of order.
5-pipe and other installments are out of order.
The flow capacity is less
1-the out put valve is not complety opened.
2-Some foreign objects have been blocked in pump impeller or suction place.
3-the direction of rotation Rotot and shaft is reverse.
4-Impeller or other pieces are used up.
5-pipe and other joints are used up.
6-water level inside well has been reduced.
7-the starting switch has been locked and Electro pump is working in star-condition.
8-the air or gas enters extremely more along with water into Pomp.
The head flow capacity is less.
1-Some foreign objects have been blocked in pump impeller or suction plase.
2-impeller and other joints are out of order.
3-Pipe and joints are out of order.
4-the air or gas enters extremely more into the pump.
5-the starting switch has been locked and Electro pump is working under star condition.
6-the pipe selected for water transmission is not suitable.
More ampere is used by Electro pump
1-The main voltage is not sufficient or Electro pump works with 2phases.
2-the rotor or pump shaft has been locked.
3-the Electro pump or its cable is out of order.
4-the Della-star switch has been locked.
5-the trust bearings or other Electro parts are out of order.
6-the resistance of winding insulation is not sufficient.
7-There is a mistake in pump selection.
The expended power is high.
1-Some part of Electro pump is out of order.
2-The out put valve is not completely opened.
3-Density of pumping liquid is high.
4-Some foreign objects have been blocked in suction place.
5-Trust bearing or bearings out of order.
6-There is a mistake in pump selection.
Anormal sounds come from electro pump
1-Some foreign objects have been blocked inside pump impeller or suction place.
2-The positive suction is not enough.
3-Some part of Electro pump is out of order.
4-The out put valve is not completely opened.
5-The Rotor is not balanced dynamically.
6-Water contains extreme air or gas.
7-Trust bearing is out of order.
8-The joints are not firm and are vibrating.
9-The Electro pump or flow pipe touching the well pipe.
The starting control panel refuses the switch.
1-There is a body of short – circuite.
3-Bearings have been locked.
4-The clearance of bearings in more than ever.
5-There is a mechanical error in pump or Electro motor.
The Electro pump is vibrating.
1-the electro pump or flow pipe is touching the well pipe.
2-the clearance of bearings is more.
3-Rotor is not balanced dynamically.
4-Bearings are eccentric.