Common Problems of Submersible Fire Pumps
Apr 21, 2022
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As we all know, submersible fire pumps are standing underwater. Compared with ordinary fire pumps on land, there will naturally be more problems. So, what are the common problems of submersible fire pumps?
1. Rust, such as serious impeller corrosion;
2. Short lifespan;
3. Easy to block;
4. It is not conducive to maintenance;
5. The fixing screw is loose, so that the spring loses its function;
6. Too much bushing wear is more serious;
7. The pressure is insufficient and cannot be used normally.
Different from ordinary fire pumps, submersible fire pumps will be more serious in many common possible problems. Among them, insufficient pressure is a major event!
So, what is the root cause of insufficient pressure in submersible fire pumps?
1. The pump is not filled with water or properly vented;
2. The speed is too low;
3. The water head of the system is too high;
4. Reason: the suction lift is too high;
5. The impeller or pipeline is blocked;
6. There is leakage of air or inlet pipeline;
7. The direction of rotation is incorrect;
8. The immersion depth of the bottom valve or inlet pipe is not enough;
9. Reason: the bottom valve of the fire pump is too small;
10. The packing or seal is worn, causing air to leak into the pump casing.
1. Rust, such as serious impeller corrosion;
2. Short lifespan;
3. Easy to block;
4. It is not conducive to maintenance;
5. The fixing screw is loose, so that the spring loses its function;
6. Too much bushing wear is more serious;
7. The pressure is insufficient and cannot be used normally.
Different from ordinary fire pumps, submersible fire pumps will be more serious in many common possible problems. Among them, insufficient pressure is a major event!
So, what is the root cause of insufficient pressure in submersible fire pumps?
1. The pump is not filled with water or properly vented;
2. The speed is too low;
3. The water head of the system is too high;
4. Reason: the suction lift is too high;
5. The impeller or pipeline is blocked;
6. There is leakage of air or inlet pipeline;
7. The direction of rotation is incorrect;
8. The immersion depth of the bottom valve or inlet pipe is not enough;
9. Reason: the bottom valve of the fire pump is too small;
10. The packing or seal is worn, causing air to leak into the pump casing.
