MP PUMPS FLOMAX 8 - User Manual

Questions and Answers

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andersonfranciscoAug 21, 2025
What to do if my MP PUMPS Water Pump is noisy or vibrates?
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  Adam ObrienAug 21, 2025
  If your MP PUMPS Water Pump is making excessive noise or vibrating, several factors could be responsible. Begin by checking and aligning the pump and driver shafts. A partially clogged impeller can cause imbalance, so back-flush the pump to clean it. Inspect the impeller and shaft for any breaks or bends, replacing them if necessary. Ensure the foundation is rigid by tightening the bolts of the pump and motor or adjusting the stilts. Worn bearings should be replaced. Make sure the suction or discharge piping is anchored and properly supported according to Hydraulic Institute Standards Manual recommendations. Finally, check for cavitation by assessing the Net Positive Suction Head Available (NPSHa) and looking for air leaks to ensure sufficient liquid for pump operation.
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Pamela CopelandAug 25, 2025
What to do if my MP PUMPS FLOMAX 8 Water Pump starts then stops pumping?
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  Thomas HowellAug 25, 2025
  If your MP PUMPS Water Pump starts and then stops pumping, it could be due to several reasons. There might be excessive air in the liquid, so clean and tighten all suction connections and consider relocating the suction inlet in the liquid source. A defective packing or seal could also be the cause, requiring replacement. The pump might be vapor bound, in which case you should provide additional pressure on the liquid being pumped by elevating the liquid source, or consider installing an air release valve in the discharge line. Air or vapor pockets in the suction line can also cause this issue, so rearrange the piping to eliminate them. Finally, check for and repair any air leaks in the suction line.
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Valerie MillerAug 31, 2025
What causes excessive leakage from the stuffing box/seal chamber of my MP PUMPS FLOMAX 8?
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  Daniel EdwardsAug 31, 2025
  Excessive leakage from the stuffing box or seal chamber of your MP PUMPS Water Pump can stem from several issues. Worn mechanical seals are a common cause, requiring replacement. Overheating of the mechanical seal can also lead to leakage, so check the lubrication and cooling lines. A scored shaft sleeve should be remachined or replaced as needed.
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Thomas BrownSep 3, 2025
What causes my MP PUMPS FLOMAX 8 to fail to prime or lose its prime?
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  Colleen HamiltonSep 3, 2025
  If your MP PUMPS Water Pump fails to prime or loses its prime, several factors could be at play. Air leaks in the suction line can prevent proper priming, so clean and tighten all suction connections and consider relocating the suction inlet in the liquid source. A clogged suction strainer or a suction lift that is too high can also cause priming issues, so clean debris from the strainer and re-evaluate pump requirements and correct suction conditions. A defective priming valve should be replaced. Lastly, a defective seal can also lead to a loss of prime, requiring replacement.
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Angela KellySep 7, 2025
Why are the bearings on my MP PUMPS FLOMAX 8 Water Pump running hot?
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  Bruce RodriguezSep 7, 2025
  If the bearings on your MP PUMPS Water Pump are running hot, it could be due to several reasons: improper alignment, improper lubrication, or lube cooling issues. Re-align the pump and drive to address alignment problems. Check the lubricant for suitability and level to ensure proper lubrication. Inspect the cooling system to address lube cooling issues.
J
Jennifer WalkerNov 14, 2025
Why is my MP PUMPS FLOMAX 8 Water Pump not delivering any liquid?
- W
  williamsstaceyNov 14, 2025
  Several factors can cause your MP PUMPS Water Pump to not deliver liquid. It could be due to the pump not being primed, so you should reprime it and check for obstructions in the suction line. The discharge valve might be closed, so verify that it is open. A clogged suction line can also be the culprit, requiring you to remove any obstructions. Ensure the pump's rotation matches the direction indicated on the housing or casing. If the total head is too high, re-evaluate the head conditions. Check that the driver is operating at its rated speed by checking the electric motor voltage or engine rpm. Vapor binding may be occurring, so increase pressure on the liquid by elevating the liquid source. Finally, ensure the foot valve or suction pipe opening is sufficiently submerged, consulting the ...
L
lopezkatherineNov 17, 2025
Why is my MP PUMPS Water Pump motor requiring excessive power?
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  Jimmy JohnsonNov 17, 2025
  If your MP PUMPS Water Pump motor requires excessive power, there are several potential causes. The head might be lower than the rating, causing the pump to move too much liquid, in this case consult the factory and consider installing a throttle valve or trimming the impeller diameter. The speed could be too high due to incorrect electric motor wiring, which would require replacing the motor. Ensure the rotation direction is correct by checking the wiring diagram. A clogged impeller can also cause this issue, so back flush the pump to clean it. If the impeller is binding, relieve strain on the casing and adjust the impeller clearance. Misalignment between the driver and pump can also lead to excessive power consumption, requiring realignment. A bent power frame shaft should be replaced. W...
R
Randy AllenNov 27, 2025
Why is my MP PUMPS Water Pump not producing rated flow or head?
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  Martin BrownNov 27, 2025
  If your MP PUMPS Water Pump isn't producing the rated flow or head, several issues could be the cause. Check for air leaks through the gasket and replace it if necessary. Also, inspect the stuffing box for air leaks and replace or adjust the packing/mechanical seal. A partly clogged impeller can restrict flow, so back flush the pump to clean it. Worn suction side plates or wear rings can reduce performance, requiring replacement. Ensure the pump is properly primed and check for obstructions in the suction line, also check NPSHa to ensure that there is enough liquid for pump operation. Verify that the driver is operating at its rated speed by checking the electric motor voltage or engine rpm. Vapor binding can also hinder performance, so provide additional pressure on the liquid being pumpe...

MP PUMPS FLOMAX 8 Specifications

General

Brand	MP PUMPS
Model	FLOMAX 8
Category	Water Pump
Language	English

MP PUMPS FLOMAX 8 - User Manual

Table of Contents

Questions and Answers

MP PUMPS FLOMAX 8 Specifications