How to replace Aquaphor filters: a complete guide

The quality of drinking water in our homes often does not meet the desired standards, so installing a purification system becomes a necessity rather than a luxury. Brand Aquaphor has established itself as a reliable manufacturer whose filters effectively remove chlorine, heavy metals and organic impurities. However, even the most advanced system requires regular maintenance to maintain high performance.

Timely replacement of cartridges is a key factor ensuring the safety of households and the durability of the equipment itself. If you ignore the life of the filter elements, contaminated water will begin to pass through them, and in some cases, accumulated harmful substances may begin to be washed back. In this article, we will look in detail at how to determine the need for maintenance, what tools will be needed, and how to correctly perform the replacement procedure without calling a technician.

Many owners of cleaning systems encounter difficulties precisely when dismantling old modules or during the initial installation of new ones, without knowing the nuances of sealing and flushing. Understanding the physics of the filtration process and the design of the flasks will help you avoid common mistakes such as leaks or air in the system. We have prepared a comprehensive guide that will turn a complex technical procedure into a simple and fast action.

When it is necessary to change cartridges: signs and timing

The manufacturer clearly regulates the service life of each type of cartridge, however, actual operating conditions may make adjustments. The standard resource of modules for under-sink systems is usually from 4000 to 8000 liters, which on average is equivalent to 1–1.5 years of use for a family of three. It is important to consider that if the water is initially very hard or contains a lot of mechanical impurities, the resource can be exhausted much faster.

There are a number of visual and taste cues that signal that filter element has expired and requires urgent replacement. Ignoring these signals may cause the water to become cloudy or have an unpleasant taste, and the deposits on the kettle will reappear.

• ⏱️ More than 12 months have passed since the last replacement, even if visually the water seems clean.
• 👃 A foreign smell or taste of chlorine has appeared, which was previously effectively eliminated by the system.
• 📉 The water pressure from the clean water tap has noticeably decreased, which indicates severe contamination of the filter pores.
• 💧 The water became cloudy or suspended matter appeared in it immediately after passing through the purification system.

Particular attention should be paid to reverse osmosis systems, where in addition to mechanical and carbon blocks, the membrane also changes. The membrane element lasts longer - usually 1.5–2 years, but its condition is critical for water quality. If the TDS meter shows a sharp increase in the salt content in the purified water, this is a sure sign that membrane has ceased to perform its function and requires replacement.

Preparation for the procedure: tools and materials

Before starting work, it is necessary to prepare the workplace and all the necessary components so that the process goes smoothly and without unnecessary fuss. You will need new cartridges that match your filter model Aquaphor. Make sure that the packaging is sealed and that the expiration dates have not expired, since the sorbents inside the modules may lose their properties during long-term storage.

To dismantle old modules and install new ones, you may need a special key, which usually comes with the filter. If the key is lost, you can use a belt or special tape to unscrew the flasks, but you must act carefully so as not to damage the case.

• 🔧 Key for unscrewing flasks (or belt/tape).
• 🧽 Clean rags or paper towels to remove spilled water.
• 🪣 A container for draining water from the flasks and the system.
• 🧤 Rubber gloves for hygiene.

⚠️ Attention: Before starting any work, be sure to turn off the water supply tap to the filter and relieve pressure in the system by opening the clean water tap. Failure to comply with this rule will result in you being sprayed with a jet of pressurized water.

It is also recommended to check in advance that all O-rings and gaskets are present. If you notice cracks, abrasions or deformation on them, it is better to replace them with new ones to eliminate the risk of leaks after assembly. In some models such as Aquaphor Crystal or Morion, specific seals are used, which are important to install correctly.

Step-by-step instructions for replacing modules

The replacement process depends on the type of system you have: flow-through filter or reverse osmosis system. Let's consider a universal algorithm suitable for most models under the sink. First, turn off the water supply valve and open the clean water tap to relieve any residual pressure in the lines.

If you have a system with replaceable bulb modules, use a wrench to unscrew them. Rotate counterclockwise while holding the filter housing with your other hand. The water inside the flask will drain, so place the prepared container. After removing the flask, remove the old cartridge and thoroughly rinse the inside of the flask with warm water without using detergents.

Place the new cartridge in the center of the flask, making sure it is level and all the way into place. Pay attention to the direction of flow if it is marked with arrows, although most cartridges Aquaphor the design is symmetrical. When assembling, check that the rubber O-ring lies flat in its groove, without distortions or pinching.

Screw the flask by hand until it stops, being careful not to use a wrench at this stage, so as not to overtighten the threads and damage the gasket. After assembling all modules, open the water supply and carefully inspect the connections for leaks. If water drips, try slightly tightening the flask or adjusting the seal.

For systems with quick-release modules (where the flask is not removed, but replaced entirely along with the filter), the process is even simpler. Turn the old module counterclockwise until it clicks and remove it. Insert the new module into the groove and turn clockwise until it locks. A characteristic click will confirm correct installation.

Flushing and starting the system

After installing new cartridges, you should not drink water immediately, as there may be air in the system, as well as coal dust from the new sorbents. It is necessary to carry out a washing procedure, which will take from 10 to 20 minutes depending on the filter model.

Open the water supply tap to the filter and immediately open the clean water tap. In the first minutes, water with black particles may come out of the tap - this is normal for activated carbon. Let the water drain into the sink until it becomes completely transparent and air stops coming out of the system with a characteristic hiss.

Cartridge type	Flushing time	Volume of drained water	Features
Mechanical (PP)	2-3 minutes	1-2 liters	Removes air pockets
Coal (Sorption)	5-10 minutes	3-5 liters	Coal dust can stain water
Membrane (Osmosis)	15-30 minutes	10-15 liters	It takes time to fill the tank
Mineralizer	1-2 minutes	0.5 liters	Washed together with the post-filter

If you have a reverse osmosis system with a storage tank, the startup process will take longer. After the initial rinse, turn off the clean water tap and allow the tank to fill completely for 1-2 hours. Then drain all the water from the tank again to ensure that the preservative and any remaining activation dust are removed.

Nuances of servicing different Aquaphor models

Various filter lines Aquaphor have their own design features that are important to consider during maintenance. For example, in models of the series Crystal modules K1, K2, K3, K7M are often used, which are inserted into stationary flasks. It is critical here not to confuse the installation sequence, although physically they can fit into any flask.

Series systems Morion They are compact and have an integrated tank. When replacing filters in Morione you need to be especially careful with pipes and connections, since access to them is limited by the tight layout. It is recommended to use tube clamps to avoid kinks.

In flow-through filter jugs, replacement is even simpler: the old cartridge is removed, and the new one is soaked in water for 10–15 minutes before installation to activate the sorbent and remove the air lock. This allows you to avoid pumping water through the jug for a long time.

What to do if the pressure drops after replacement?

If after replacing the cartridges the water pressure becomes very weak, check that you have removed the shipping plugs from the new modules. It could also be a pinched tube or an incorrectly installed O-ring blocking the flow.

For models with an electronic life indicator, do not forget to reset the readings after replacement. This is usually done by long pressing a button on the case or through a special menu if the filter is connected to Wi-Fi. This will allow the system to correctly track the next maintenance cycle.

Common mistakes and how to avoid them

One of the most common mistakes is using silicone grease for rubber seals. Rubber rings in filters Aquaphor already have the necessary coating, and the use of foreign chemicals can lead to the destruction of rubber and the release of harmful compounds into the water.

Another mistake is ignoring the manufacturing date of the cartridge. Sorbents, especially in carbon filters, tend to age even in sealed packaging. Always check the manufacturing date on the box and try not to use modules that are more than 2 years past their expiration date.

• 🚫 Using hot water to rinse the flasks (may deform the plastic).
• 🚫 An attempt to wash and reuse old cartridges (the effectiveness will be zero).
• 🚫 Excessive tightening of the flasks with a wrench (leads to cracks and difficulties with the next one).
• 🚫 Installing cartridges in the wrong sequence (disturbs the operation of the entire system).

⚠️ Attention: Never try to restore the life of a cartridge by washing or boiling. The structure of the sorbent and membrane changes irreversibly during operation, and “regeneration” at home is impossible and hazardous to health.

It is also important to monitor the temperature. Most filters Aquaphor designed to work with cold water. Supplying hot water to the inlet can instantly damage the cartridges and lead to depressurization of the system.

Questions and answers (FAQ)

Can charcoal cartridges be washed and reused?

No, this is strictly prohibited. The carbon block has a limited sorption capacity, which is completely exhausted by the end of its service life. Washing with water will only remove surface dirt and will not restore the coal's ability to bind chemicals and chlorine. Moreover, bacteria may begin to grow in a damp, used cartridge.

What should I do if, after replacing, water flows over the edge of the flask?

Most likely the problem is in the o-ring. Check to see if it is twisted or if there is any dust or hair on it. Make sure the ring is in its groove. Also check that the bulb is screwed in completely - sometimes the threads can be contaminated with salt deposits that prevent a tight fit.

How often do you need to change cartridges if you rarely use water?

Even if you use little water, the cartridges need to be changed at least once a year. A humid environment is created inside the filter, ideal for the proliferation of microorganisms. Over time, bacteria can colonize the sorbent, and instead of cleaning the filter, it will become a source of contamination. The date of last replacement is usually written with a marker on the case.

Why does the filter hum or make noise after replacement?

The noise is most often caused by residual air in the system that has not yet been completely released. This is normal for the first hours of work. If the noise persists for a long time, check the pressure in the water supply - perhaps it is too high for this model, and installation of a pressure reducer at the inlet of the filter is required.