Name: Danfoss Series 45
Brand: Danfoss
Rating: 4 (1 reviews)

Questions and Answers:

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Maureen EdwardsJul 26, 2025
Why is my Danfoss Series 45 Water Pump making excessive noise and vibration?
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  Marcia TorresJul 27, 2025
  Excessive noise and vibration in your Danfoss Water Pump can stem from several causes. It might be due to insufficient hydraulic fluid leading to cavitation. Ensure the reservoir is filled to the correct level. Another cause could be air in the system. Purge any air, tighten the fittings, and inspect the inlet for leaks. Misaligned shafts or a loose shaft coupling can also generate noise and vibration; correct any misalignment or repair/replace the coupling, ensuring the correct type is used.
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Eric KingJul 31, 2025
What to do if my Danfoss Series 45 Water Pump actuator response is sluggish?
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  Daniel PetersonJul 31, 2025
  If you notice a sluggish actuator response in your Danfoss Water Pump, several factors could be responsible. A low external relief valve setting could be slowing down the system; adjust the external relief valve setting according to the manufacturer's recommendations, ensuring it's above the PC setting. A low PC or LS setting can also limit the pump's performance; adjust these settings accordingly. Also, check for high case pressure and correct any restrictions in the case drain line. Make sure that the proper LS signal transmits to the pump.
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David GriffinAug 4, 2025
Why is my Danfoss Water Pump system operating hot?
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  Curtis OwensAug 4, 2025
  If your Danfoss Water Pump system is running hot, it could be due to an insufficient volume of hydraulic fluid, which fails to meet the system's cooling demands. Ensure the reservoir is filled to the proper level and that the reservoir is the correct size. Fluid viscosity above acceptable limits or low fluid temperature will not allow the pump to fill or control to operate properly, so allow the system to warm up before operation or use fluid with the appropriate viscosity grade for expected operating temperatures.
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Ashlee ScottAug 8, 2025
What causes low pump output flow in a Danfoss Water Pump?
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  Joshua GrahamAug 9, 2025
  Low output flow in your Danfoss Water Pump can be caused by several factors. Insufficient hydraulic fluid will limit output flow, so ensure the reservoir is filled to the proper level. If the external relief valve is set below the PC setting, adjust it following the manufacturer’s recommendation, ensuring it's above the PC setting. Also, a low PC setting can prevent the pump from achieving full stroke; adjust the PC and LS settings. High inlet vacuum also causes low output flow, so correct the inlet pressure conditions.