Culligan Water Filter How to & Troubleshooting Guide

Culligan water filtration systems have improved water quality for thousands of households worldwide. The filtration system can remove some contaminants like iron, sulfur, harmful chemicals, and sediments. The company delivers safer and healthier water for drinking, cooking, washing vegetables, and more. If you need quality, safe water, install a Culligan water filter and have a troubleshooting guide.

Components of Culligan Water Filter

The filter unit has several parts that enable it to work efficiently.

  • Sediment filter- it removes the dirt, sand, and other smaller particles.
  • Activated carbon filter- it clears the bad tastes and odors like chlorine, sulfur.
  • Reverse osmosis membrane cartridge-  squeezes out the minerals or dissolved substances in your water like lead, etc.
  • Manifold assembly- it directs and regulates the flow in the whole unit.
  • Storage tank- hold water under pressure for quick delivery.
  •  Polishing filter- contains activated carbon for ensuring the water will be taste and odor-free.
  • Smart tap- mounted on your kitchen sink, you need to twist the handle to drink clean water.

How Do You Reset a Culligan Water Filter?

  • Press and hold the Regen button on your filter for 3 seconds or until you hear a beep sound.

How Long Does a Culligan Water Filter Last?

Culligan water filters can last for 3 to 5 years. Depending on the type of Culligan filter you have, you should change the filter every once in 3 years or notice a change in the taste or odor of your water. However, the filter’s lifespan will depend on its usage.

How Do You Pressurize a Culligan Reverse Osmosis Tank?

  • Turn the feedwater supply to the RO.
  • Empty the old tank through the outlet.
  • Lock the tank’s ball valve.
  • Detach the yellow line from the tank valve.
  • Find the pressure valve under the blue cap on the tank.
  • Use an air pressure gauge to examine the current air pressure.

Why is My Culligan under Sink Water Filter on Low Pressure?

The low pressure on your Culligan filter may be a temporary issue occurring due to water from your company being at low pressure too. Your filter system requires at least 40 psi to function but preferably 60 psi. If you notice that all the household faucets have low water pressure, it’s from your local water utility, and this should correct in few minutes.

How to Replace a Culligan Water Filter

  • Disconnect the water flow to the filter by rotating the spigot handle in a clockwise direction.
  • Open the cold water tap until water stops draining from the faucet.
  • Place a towel under the cartridge to absorb any water that spills when removing the cartridge.
  •  Turn the filter cartridge so that the arrow points to the unlocked position on the filter head.
  • Slide the cartridge downwards to release it from the filter head.
  • Push the cartridge upwards on the filter head with an arrow pointing to the unlocked position. Twist the cartridge by hand until the arrow points locked position.
  • Kindly turn on the water supply and allow it to flow for 10 minutes to flush the system out.

Why is My Under Sink Culligan Water Filter Making Noise?

Culligan water filters make noises as it operates where some noises are normal, and others are abnormal. Normal noises include;

  • A slight humming- it’s due to the pressure change inside the unit
  • Slight dripping/gurgle noise from the sink- water flowing down the skink
  • Whining sound- from an installed tank as it pressurizing for the first time.

Abnormal noise include;

  • Loud noise on new installations- it means the unit was installed incorrectly. Make slight adjustments on the drain line adapter to minimize the noise.
  • A loud whining noise- it’s caused by missing filters or membranes. Ensure that all filters and membranes are well installed.

How to Change Culligan under Sink Water Filter

You require two filters white sedimentation filter, a carbon filter, a filter wrench to help hold the grooves on the filter, and a white paper towel.

  • Turn the water supply off at the back of the wall.
  • Open the sink tap to bleed the pressure off for a few seconds and turn it off.  
  • Using the wrench turn the filter to the left and remove the housing.
  • Make sure the O-ring is still in place. Pour the water in the housing into the sink.
  • Unwrap the new filter and insert it into the housing.
  • Fix the housing into its place using the filter wrench.
  • Later take the white paper towel and wipe off the water on the surface.
  • Repressurize your tank for the system to function.
  • Turn the water valve on and confirm if the system is functional and there are no leaks.

How Often Should I Replace My Culligan Reverse Osmosis Filters?

It’s best if you replace your reverse osmosis filters every 3-5 years and carbon and particulate filters once a year. It will help if you don’t wait until the filter gets plugged; change it before the solids or chlorine comes through.

How to Bypass a Culligan Water Filter

You can bypass the water filter by;

  • Twisting the blue knob clockwise until it stops.
  • Ensure you don’t overtighten.
  • For a typical operation, turn the blue knob counter-clockwise until it stops.

How to Clean a Culligan Water Filter

You have two types of filters to clean the reverse osmosis filter and activated carbon filters. Make sure you turn off the water supply to the filtration system.

Reverse osmosis filters

  • Drain all water from the filter.
  • Remove the prefilter and reverse the osmosis membrane from the system.
  • Use chemical cleaners to sanitize the system that’s is best for your filter. You can still consider using unscented bleach.
  • Remove any build-up in the prefilter housing and rinse it well.
  • Wash the membrane with dishwashing liquid and rinse it thoroughly.
  • Later reassemble the system.

Activated carbon filters

  • Prepare a cleaning solution. The water should be at room temperature. Carefully add 2 cups of muriatic acid to a half-full bucket of water. Use a plastic stirrer to stir it consistently.
  • If your filter had some dirt or debris, rinse it off with a hose pipe first. Later place the filter in the solution and let it sink.  Allow the filter to soak in the solution for at least five days to eliminate any contaminants.
  • The solution should remain at room temperature. Afte,r remove the filter and resoak it in clean water for 5 minutes.
  • Rinse the filter well with a hosepipe and reinstall it.

How Do You Flush a Culligan Water Filter?

Flushing helps get rid of unwanted dissolved salts from the systems and prolongs your filter’s life. To flush, you need to run water through the Culligan filter several times before using the filter. The only tool you require for the task is an empty container.

Check this too: Frigidaire Puresource 3 Water Filter How to & Troubleshooting Guide

Why is My Culligan Water Filter Leaking

Before calling your technician to repair your filter, first carry out the following;

  • Make sure all bypass valves are in a good position.
  • Tighten all connections on the water filter like nozzles, valves, and gaskets. Loose fittings may cause leaks.
  • Wipe away any dirt on the tubing or connections as this may also interfere with proper connections and cause leaks.
  • If there is still leakage, call your technician for repair.

Oscar

In his spare time, Oscar loves tinkering with electronics. Solar panels, wiring, old TVs and sometimes DIY powerwalls. When he is not busy trying not to electrocute himself, you can find him in the garden tending to his vegetables and chickens.

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