Pentair AUTOTROL MAGNUM 742 User Manual (English)

Questions and Answers:

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James RodriguezAug 17, 2025
Why is my Pentair Water Filtration System not softening water?
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  Barbara WilsonAug 17, 2025
  If your Pentair Water Filtration System isn't softening water, it might be due to several reasons. First, check if there was a power interruption and reset the time of day if needed. Ensure water pressure is restored. For Logix controllers, verify proper programming. Also, check if there is salt in the brine tank and add some if needed. Make sure the manual bypass valve is closed. If you have a 762 series controller, inspect, clean, or replace the turbine meter assembly. Inspect the riser pipe seal for leaks and ensure it's properly sealed. Check for sufficient brine, inspecting the refill controller and its settings. Finally, inspect and clean the injector and/or injector screen if they are plugged.
D
Dustin WoodAug 20, 2025
Why is there a loss of water pressure in my Pentair Water Filtration System?
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  Mckenzie SnyderAug 20, 2025
  If you're experiencing a loss of water pressure with your Pentair Water Filtration System, it could be due to a fouled resin bed from iron accumulation. Try cleaning the Magnum control valve and mineral bed with a cleaner. Also, check the slots in the riser pipe or laterals for resin fines and clean them as needed.
A
Alan ShortAug 23, 2025
Why is there salt in the water after regeneration in my Pentair Water Filtration System?
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  James WellsAug 23, 2025
  If your Pentair Water Filtration System has salt in the water after regeneration, the injector might be too small. Consider installing the correct injector. Low water pressure can cause excessively long brine draw times, so increase the water pressure above 172 kPa minimum. Remove any drain line restrictions. You may also need to increase the slow and/or fast rinse time. Finally, inspect and clean the injector and/or injector screen assembly.
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Tiffany RyanAug 26, 2025
What to do if my Pentair Water Filtration System has no brine draw?
- S
  Shannon HaydenAug 26, 2025
  If your Pentair Water Filtration System has no brine draw, start by inspecting and cleaning the injector and/or injector screen assembly. Ensure that the water pressure is above 172 kPa minimum. Check for and remove any obstructions in the drain line. Also, make sure all brine line fittings are tight to prevent air from being pulled into the line.
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jonathanhickmanAug 28, 2025
How to fix excessive water in brine tank of Pentair Water Filtration System?
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  hboydAug 28, 2025
  If you notice excessive water in the brine tank of your Pentair Water Filtration System, try cleaning the drain line flow control. Inspect and clean the injector and/or injector screen assembly. Ensure the correct refill controller is installed. Also, verify that the operating pressure is above 172.4 kPa.
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Monica HarrellAug 31, 2025
What causes insufficient brine draw in Pentair Water Filtration System?
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  Allison BrownAug 31, 2025
  If your Pentair Water Filtration System has insufficient brine draw, begin by inspecting and cleaning the injector and/or injector screen assembly, as it might be partially clogged. Check the flow rate capabilities of the safety float/air check assembly to ensure there's no restriction in the brine line. Also, ensure that the water pressure is above 172 kPa minimum. If the drain line is elevated, reduce its height to the valve level. Finally, check for and remove any partial restrictions in the drain line.
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Holly SmithSep 2, 2025
Why is my Pentair Water Filtration System leaking to the main drain?
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  williamsmarkSep 2, 2025
  If your Pentair Water Filtration System is leaking to the main drain, install a drain line flow control if one is missing. Ensure that the water pressure is above 172 kPa minimum. Inspect and clean the injector and/or injector screen assembly. Plumb the pilot drain line to an atmospheric position, such as the brine tank, to prevent back pressure on the pilot drain port.
V
Victoria GillSep 5, 2025
How to stop media loss to drain in Pentair Water Filtration System?
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  Joshua WilsonSep 5, 2025
  If your Pentair Water Filtration System shows a loss of media to the drain, install a drain line flow control. Make sure that air or gasses are not present in the feed water. Ensure that all brine line fittings are tight and that the aircheck closes to prevent the unit from drawing air through the brine line. If the air check is defective, clean or replace it.
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moniquerobertsSep 8, 2025
Why is my Pentair Water Filtration System not refilling the brine tank enough?
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  James GarciaSep 8, 2025
  If your Pentair Water Filtration System isn't refilling the brine tank sufficiently, check the flow rate capabilities of the safety float/air check assembly to ensure there's no restriction in the brine line. Additionally, try reprogramming the controller, as the resin volume might be incorrectly set.

Pentair AUTOTROL MAGNUM 742 Specifications

General

Power Supply	120V/60Hz or 220V/50Hz
Mounting	Top-mounted
Pressure Range	20-125 psi
Cycle Adjustment	Adjustable
Model	AUTOTROL MAGNUM 742
Materials	Noryl
Material	Noryl