Stenner 45MHP2 - User Manual

Questions and Answers

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Tanya WrightAug 18, 2025
What to do if Stenner 45MHP2 Water Pump has no output but the pump head rotates?
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  Tammie AriasAug 18, 2025
  If your Stenner Water Pump head rotates but there's no output, consider these potential causes and solutions: * Replenish the solution if the solution tank is depleted. * Adjust the suction line to be 2–3" off the bottom of the tank to avoid sediment. * Inspect or replace the suction line if there's a leak. * Replace the compression ferrules if they are installed incorrectly or damaged. * Inspect and clean the injection point if it's clogged. * Clean and/or replace any clogged suction/discharge tubing or the injection check valve. * Replace the pump tube if its life is exhausted.
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Juan BairdAug 20, 2025
How to fix a leaking tube on a Stenner Water Pump?
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  Carrie MccormickAug 21, 2025
  If the tube on your Stenner Water Pump is leaking, here are a few things to check: * Replace the pump tube at routine intervals, as the tube may have ruptured. * Clean the injection fitting and replace the pump tube if there's a calcium or mineral deposit. * Check the tube's PSI rating against the system pressure and replace it accordingly if there's excessive back pressure. * Replace the tube according to the instructions if it's twisted. * Replace the tube and center it if it is not centered.
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Kimberly HensonAug 23, 2025
Why is the output low on my Stenner 45MHP2, even though the pump head rotates?
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  buckkevinAug 23, 2025
  If your Stenner Water Pump head rotates but the output is low, the following could be the cause: * Replace the pump tube if it is worn. * Install new rollers or roller assembly if rollers are missing or cracked. * Inspect and clean the injection point if it is restricted. * Check the tube psi rating against system pressure; replace accordingly if there is high system back pressure.
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evanschristineAug 26, 2025
What causes a Stenner Water Pump tube to have a shortened life?
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  Larry FoleyAug 26, 2025
  Several factors can shorten the tube life of your Stenner Water Pump: * Check chemical compatibility, as chemical attack can degrade the tube. * Remove any mineral deposits at the injection point and replace the pump tube. * Maintain the suction line 2–3" above the bottom of the tank to prevent sediment blockage at the check valve. * Replace the check valve duckbill at every tube change. * Reverse the duckbill orientation if it's in the wrong position. * Refer to tube replacement instructions if the tube was manually stretched to lock into the discharge side slot. * Clean the roller assembly or replace it if seized rollers caused abrasion on the tube.
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Ashley PerryAug 28, 2025
Why is the output of my Stenner Water Pump too high?
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  benjamineatonAug 28, 2025
  If the output of your Stenner Water Pump is too high, this could be due to: * Replacing the tube with the correct size if the current one is incorrect. * Replacing the roller assembly if it is broken. * For a malfunctioning Feed Rate Control or incorrect model of motor, refer to their respective sections.
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Bridget GoodmanAug 30, 2025
Why is the indexing erratic on my Stenner 45MHP2?
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  Karen StewartAug 30, 2025
  Erratic indexing on your Stenner Water Pump can be caused by: * Turning over or replacing the index plate if it is worn. * Replacing the variable cam if it is worn. * Replacing the index pin and lifter assembly if the lifter is worn.
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Joseph MorganSep 2, 2025
What causes a Stenner 45MHP2 Water Pump head to stop rotating?
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  David BrownSep 2, 2025
  If the pump head on your Stenner Water Pump is not rotating, consider the following: * Turn over or replace the index plate if it is worn. * Refer to the Motor Section for problems with the gear motor. * Replace the roller assembly if it is stripped. * Tighten the holder into the spider assembly if the index pin holder backed out. * Replace the index pin and lifter assembly if the index pin is broken.
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denniskelseySep 4, 2025
What to do if the Stenner 45MHP2 Water Pump adjustment ring turns, but the output doesn’t change?
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  Walter CastilloSep 4, 2025
  If the adjustment ring on your Stenner Water Pump turns but the output doesn’t change, it could be because the variable cam has disengaged from the ring. Re-insert the 90? end into the ring. Alternatively, the variable cam might be broken, requiring a replacement.
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richard03Sep 7, 2025
What does it mean if there's visible fluid in the Stenner Water Pump head?
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  wilsonjosephSep 7, 2025
  Visible fluid in the Stenner Water Pump head usually indicates a pump tube rupture or leak. Replace the pump tube, ferrules, and center the tube.
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znguyenSep 9, 2025
Why does the Stenner Water Pump head rotate continuously?
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  William GrantSep 9, 2025
  If your Stenner Water Pump head rotates continuously, it is possible that the variable cam is installed incorrectly. Try replacing or re-inserting the variable cam.