Reverse osmosis water purification systems such as Geyser Prestige, have long established themselves as reliable household devices that provide high quality drinking water. However, even the most advanced filter requires regular maintenance, and ignoring the timing of cartridge replacement can negate the entire effectiveness of the installation. Water is a resource that we consume every day, and the health of the entire family directly depends on the cleanliness of the filter elements.
The process of replacing consumables does not require calling a technician and can be done independently if you know the correct procedure and follow safety precautions. In this article we will analyze in detail the stages of system maintenance, typical errors and technical nuances that are often overlooked by inexperienced users.
Cartridge life and signs of contamination
Each element of the system reverse osmosis has its own strictly defined resource, which depends on the quality of the source tap water and the volume of water withdrawal. The polypropylene pre-cleaning cartridge, which retains mechanical particles, usually lasts about 3-6 months. If you miss this deadline, it becomes clogged, the pressure in the system drops, and the load on subsequent cleaning stages increases.
Carbon filters located in the second and third flasks are responsible for removing chlorine and organic compounds. Their lifespan is on average 6–12 months. Reverse osmosis membrane is the heart of the system and lasts the longest - from 1.5 to 2 years, but only if the prefilters are working properly.
⚠️ Attention: If the water tastes worse, a foreign smell appears, or the pressure in the storage tank noticeably decreases, these are direct signals for immediate system maintenance, even if the calendar deadlines have not yet passed.
It is important to understand that the terms indicated by the manufacturer are average. In reality they can vary greatly. For example, in areas with very hard water or high levels of rust in the pipes, prefilters may require replacement monthly.
- 📉 Decreased system performance and slow tank filling.
- 💧 The appearance of scale in the kettle, although there was none before.
- 👃 Change in taste or appearance of water taste.
- 🔊 Increased pump operating time (if included).
Necessary tools and preparation for work
Before starting the procedure, you need to prepare a workplace and the necessary tools. To replace cartridges in the system Geyser Prestige You don't need complex professional tools, but having everything you need on hand will make the task easier. Be sure to turn off the water supply taps to the system and release the pressure from the storage tank by opening the drinking tap valve.
To unscrew the flasks, it is best to use a special wrench that comes with the filter. If it is lost, a strap or tape can be used, but be careful not to damage the body of the bulb. You will also need a container to drain the remaining water and a clean rag to wipe the surfaces.
Do not forget to purchase original cartridges or high-quality analogues that match the standard size SL-10 (standard 10-inch). The use of cheap consumables of unknown origin can lead to membrane damage and deterioration of water quality.
- 🔧 Key for unscrewing flasks (usually included).
- 🧼 Soap solution or mild detergent for washing flasks.
- 🧻 Clean napkins or towel for wiping joints.
- 🪣 A capacity of at least 2 liters for draining water.
Lubricate the rubber seals on the flask lids with food-grade silicone or glycerin before assembly - this will extend their service life and make it easier to unscrew next time.
Step-by-step replacement of pre-filters (stages 1, 2, 3)
Replacing pre-clean cartridges is the most common procedure. It starts with the first flask, where a polypropylene cartridge is installed. Unscrew the first flask counterclockwise, remove the old element and thoroughly wash the flask itself with warm water and soap, removing accumulated plaque and mucus.
The second and third flasks usually contain carbon filters (carbon block or granular carbon). The steps are similar: drain the water, unscrew the flask, and wash it. It is important not to confuse the installation order if different types of cartridges are used, although in standard schemes Geyser Prestige the sequence is usually standard: PP5 -> C1 -> C2 or PP5 -> C1 -> PP1.
Insert new cartridges into flasks. Please note that they should fit tightly, but without excessive force. When tightening the flasks, make sure that the rubber o-ring does not fall out of the groove or become distorted, otherwise leakage cannot be avoided.
☑️ Algorithm for replacing prefilters
After installing the new elements, you must carefully tighten the flasks by hand until they stop, and then lightly tighten them with a wrench. Excessive diligence is not required here and may lead to deformation of the threads or seal.
Replacing the reverse osmosis membrane
The membrane is the main filter element that removes up to 98% of all impurities, including hardness salts, viruses and bacteria. It is located in the fourth housing of the system and is a thin-film element in a plastic housing. Replacement is done less frequently, but requires special attention.
To remove the membrane, you need to disconnect the water supply tube and the purified water outlet tube from the housing. The membrane is removed with little effort. If it is “stuck” due to a replacement that has not been carried out for a long time, you can gently shake it or use a special puller, but in no case use brute force, which can damage the case.
When installing a new membrane, pay attention to the direction of flow. On the membrane body there are two rubber seals on one side and one on the other. The side with two rubber bands (or the side with small holes, if you look at the end) should be directed inside the body, towards the plug. This is a critical point.
| Parameter | Standard membrane (50 GPD) | High performance membrane (100 GPD) | FilmTec membrane (USA) |
|---|---|---|---|
| Resource | 1.5 - 2 years | 1.5 - 2 years | 2 - 3 years |
| Productivity | up to 190 l/day | up to 380 l/day | up to 200 l/day |
| Working pressure | from 3 atm. | from 3 atm. | from 2.5 atm. |
| Degree of purification | 96-98% | 96-98% | 98-99% |
⚠️ Attention: Before installing a new membrane, be sure to flush the system without it for 5-10 minutes to remove any carbon dust from the new prefilters that may have gotten into the lines.
After installing the membrane, assemble the connections, making sure that the tubes are inserted all the way into the fittings. The special locking clip on the tube must be installed correctly, securing the tube in the nipple.
Mineralizer and post-filter maintenance
The fifth stage is a carbon post-filter that improves the taste of water, and the sixth (if any) is a mineralizer that saturates the water with healthy salts. These elements change approximately once a year. The post-filter is an oblong cartridge that is inserted into a special horizontal housing or connected through fittings.
The mineralizer requires careful handling, as there is fragile material inside. When replacing, try not to shake it too much. The water after the mineralizer may have a slightly changed pH, which is normal for reconstituted water.
When connecting tubes to the post-filter and mineralizer, it is important to follow the markings In (input) and Out (exit). Reversing the direction of flow will make these stages ineffective or stop the flow of water completely.
- 🔄 The post-filter removes foreign tastes possible after the storage tank.
- 💎 The mineralizer adds calcium, magnesium and sodium in safe proportions.
- 📏 Standard post-filter resource is 12 months or 6000 liters.
Why do you need a mineralizer if the water is already clean?
Reverse osmosis purifies water almost to the state of distillate, removing not only harmful impurities, but also beneficial salts. Long-term consumption of completely demineralized water is undesirable, so the mineralizer restores the optimal salt balance, making the water beneficial for the body.
Flushing the system and checking for leaks
After replacing all the cartridges and assembling the system, the crucial moment of launch comes. Open the water supply tap to the filter and carefully inspect all connections for leaks. For the first few minutes, it is better to be near the installation, monitoring the joints of the flasks and fittings.
Then open the valve on the storage tank and turn on the drinking tap. In the first 10–15 minutes, water with air pockets and possible coal dust will come out of the tap - this is normal. Let the system run for about 30–60 minutes to flush the new cartridges and stabilize the membrane.
Fully filling the tank will take from 1 to 3 hours, depending on the pressure in the water supply and the type of membrane. Only after the tank is completely filled and 2-3 cycles of emptying it can the water be considered ready for use.
It is better to empty the first two full tanks of water after replacing the cartridges, as they may contain an increased concentration of preservatives from the new membrane or coal dust.
If you notice that water is constantly flowing into the drain even after filling the tank, check the operation of the flow restrictor and membrane. The membrane may be dirty or the automatic valve may be faulty.
Typical mistakes when replacing filters
The most common mistake is insufficient tightening of the flasks or, conversely, overtightening, which deforms the seal. Also, users often forget to remove the shipping film from new rubber seals if they were packaged separately.
Another mistake is ignoring flushing the system. New carbon cartridges contain a lot of fine dust, which without thorough washing will quickly clog the new membrane, reducing its service life significantly. Don't skimp on time at this stage.
Some people try to wash disposable cartridges (especially polypropylene) and reuse them. This is strictly forbidden: the structure of the material is disrupted, and the cleaning efficiency drops to zero, and bacteria can multiply inside.
⚠️ Attention: Never leave the system under pressure with open flasks. Even a residual pressure of 1-2 atmospheres can knock the flask out of your hands and damage property or cause injury.
Following replacement technology ensures that your system Geyser Prestige will last for many years, providing you with clean and tasty water.
How often do you need to change cartridges in Geyser Prestige?
Standard schedule: pre-filters (1-3 stages) - once every 6 months, membrane - once every 1.5-2 years, post-filter and mineralizer - once a year. However, the schedule can be adjusted depending on the quality of tap water and the volume of consumption.
Why does water flow slowly after changing filters?
This may be due to air pockets in the system that take time to escape, or low pressure in the water supply. Also check that the valve on the storage tank is fully open.
Do I need to disinfect flasks when replacing them?
Yes, it is recommended to wash the flasks with warm water and a mild detergent. The use of aggressive chemicals (bleach, alcohol) is undesirable, since residual substances can damage the seals or membrane.
What to do if the cartridge does not fit into the flask?
Make sure you are using a standard size SL-10 (10 inch) cartridge. If the size is correct, check to see if the rubber O-ring at the bottom of the bulb or on the cartridge itself is jammed.