Bestway sand filter: complete instructions from installation to cleaning

Sand filter Bestway - one of the most popular solutions for water purification in frame and inflatable pools. Its simplicity, efficiency and relatively low cost make the device in demand among owners of private reservoirs. However, even such reliable equipment requires proper installation, configuration and regular maintenance. Mistakes at any stage can lead to poor filtration, breakdowns, or even damage to the pool.

In this article you will find step-by-step instructions for assembly and connection sand filter Bestway, you will understand the operating modes of the pumping station, learn how to properly rinse and replace sand, and also avoid typical problems. We have collected all the necessary information - from choosing a place for installation to storing the filter in winter - to ensure that your pool always remains clean and the equipment serves for many years.

1. Equipment and preparation for installation

Before starting installation, it is important to ensure that all parts are in place and the installation location complies with safety requirements. Standard sand filter kit Bestway (for example, models 58388, 58397 or 58477) includes:

• 📦 Pumping station with pressure gauge and mode control valve
• 🏖️ Filter housing with lid and O-ring
• 🏗️ Hoses for connecting to the pool (suction and drain)
• 🔧 Fastening clamps and adapters for connections
• 📄 Operating instructions (often in several languages)
• ⚙️ Backwash kit (if provided by the manufacturer)

Sold separately quartz sand faction 0.4–0.8 mm — its quantity depends on the filter model (usually from 15 to 35 kg). Using sand of a different fraction or alternative fillers (for example, glass granules) without agreement with the manufacturer may damage the filter element and void the warranty.

Also prepare your tools:

• 🔨 Screwdriver or screwdriver (for attaching clamps)
• 📏 Tape measure or ruler (to check installation level)
• 🧰 Sealant or fum tape (for sealing threaded connections)
• 🧹 Broom or brush (to clean the installation area from debris)

⚠️ Attention: Do not install the filter on an uneven or soft surface (such as grass or sand). Vibration from a running pump can cause equipment to move and hoses to rupture. The optimal base is a concrete slab, wooden flooring or a special pallet.

2. Step-by-step instructions for assembling the filter

Sand filter assembly Bestway takes no more than 30–40 minutes if you follow a clear algorithm. Below is a universal diagram for most models, but before starting work, be sure to check the instructions for your specific station.

Fill the filter housing with sand to 2/3 of the volume|Connect the hoses to the pool (suction - to the skimmer, drain - to the nozzle)|Install the pump on a flat surface and secure the clamps|Check the tightness of all connections with a soap solution|Connect the filter to the electrical network via an RCD (residual current device)

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Step 1. Filling with sand

Unscrew the top filter cap and fill the housing with sand to the mark (usually indicated inside or in the instructions). Do not compact the sand - it should lie loosely so that water passes evenly through the layer. After backfilling, carefully rinse the sand with water from a hose to remove dust.

Step 2: Connecting the hoses

Connect the suction hose to pool skimmer (or an adapter for inflatable models), and the drain - with water return nozzle. Use clamps to secure. Make sure that the hoses are not kinked or have sharp bends that could impede the flow of water.

Step 3. Installation and connection of the pump

Place the pumping station on the prepared base. Connect it to the power supply via socket with grounding and RCD (leakage current no more than 30 mA). Do not use extension cords as this may cause the cable to overheat.

Step 4: Checking the tightness

Apply soapy water to all connections and turn the pump on Filtration for 2–3 minutes. If bubbles appear, tighten the clamps or replace the O-rings.

3. Operating modes and their purpose

Sand filters Bestway equipped with a 6-position valve that allows you to switch operating modes. Each of them performs a specific function, and improper use can lead to equipment failure or deterioration of water quality.

Mode	Purpose	Duration of use
Filter	Basic mode of water purification. The water passes through sand, which traps contaminants.	Constantly (except for maintenance time)
Backwash	Cleaning sand from accumulated contaminants using reverse water flow.	2–3 minutes (until clear water in the viewing window)
Washing (Rinse)	Removing residual dirt after backwashing. The water is drained into the sewer.	30–60 seconds
Seal (Waste)	Draining water bypassing the filter (for example, to empty a swimming pool).	As needed
Recirculate	Pumping water without filtration (for chemical distribution).	10–15 minutes
Closed	Shutting off the flow of water (for example, for repairs).	Short term

The most common mistake is long-term use of the mode Backwash. If you rinse the sand for more than 3-4 minutes, it may be washed out of the filter or lose its properties. It is also not recommended to switch the valve while the pump is running - this can damage the seals.

⚠️ Attention: If the pool water remains cloudy after backwashing, check the sand level in the filter. Perhaps it is not enough, or the sand fraction does not meet the requirements. In this case, additional filling or complete replacement of the filler is required.

4. Filter maintenance and cleaning

Regular sand filter maintenance Bestway extends its service life and maintains water quality. Basic procedures:

• 🔄 Backwash: carried out once a week or when the pressure on the pressure gauge increases by more than 0.5 bar from the initial level.
• 🧹 Cleaning the case: Once a season, remove plaque and dirt from the inner walls of the filter with a soft brush.
• ♻️ Replacing sand: Every 3–5 seasons (or if filtration deteriorates), completely replace the filler.
• ⚙️ Checking the seals: Before each season, inspect the rubber rings and replace them if worn.

How to properly rinse the filter:

1. Turn off the pump and set the valve to Backwash.
2. Turn on the pump and flush until the water in the sight glass runs clear (usually 2-3 minutes).
3. Set the valve to mode Washing (Rinse) for 30–60 seconds to remove any remaining dirt from the pipes.
4. Return the valve to mode Filter.

If the pressure in the system is constantly increasing, and backflushing does not help, this may indicate:

• 🛑 Sand clogging with oils or organics (requires chemical cleaning with special means).
• 🔧 Malfunction of the pressure gauge or valve (diagnostics required).
• 🌊 Air entering the system (check the tightness of the hoses).

What to do if sand is washed out of the filter?

If sand is visible in the drain water after backwashing, this is a sign of damage to the drainage system inside the filter. Immediately turn off the pump and contact a service center. Continued use may result in sand entering the pool and damaging the equipment.

5. Typical mistakes and their consequences

Even experienced pool owners sometimes make mistakes when using sand filters. Here are the most common of them and what they threaten:

• 🚫 Using the wrong sand: Too fine or coarse a fraction impairs filtration and can damage the drainage system. The consequence is cloudy water and premature wear of the pump.
• 🚫 No backwash: If you don't wash the sand, it will become clogged with dirt and stop letting water through. The pressure in the system will increase, which can lead to rupture of the hoses.
• 🚫 Pump operation without water: If the filter is turned on “dry”, the seals overheat and become deformed. This is one of the most common causes of breakdowns.
• 🚫 Storing the filter in winter with water: frozen water expands and can burst the housing or hoses. Always drain and dry equipment before storing.

Another critical error - ignoring pressure gauge readings. If the pressure exceeds 1.5 bar, the pump automatically turns off (in models with protection), but in older filters this can lead to an accident. Regularly check the instructions, which indicate the acceptable values ​​for your model.

⚠️ Attention: If after winter the filter begins to make unusual sounds (grinding, vibration), turn it off immediately and check the sand. Perhaps it was caked or lumps formed in it. In this case, a complete replacement of the filler is required.

6. Preserving the filter for the winter

Proper preparation of the sand filter Bestway by the winter season guarantees its performance for the next year. The conservation process includes several mandatory steps:

1. Draining water: disconnect the filter from the power supply, set the valve to Seal (Waste) and drain the pool and hoses.
2. Sand cleaning: wash the filter in Backwash, then remove any remaining water from the housing by tilting it.
3. Drying: Dry all parts (hoses, pump, housing) in a well-ventilated area for at least 24 hours.
4. Storage: Place the equipment in a dry place with a positive temperature. The sand can be left in the filter or poured into a bag.

Some owners make the mistake of leaving water in the hoses or pump. Even a small amount of liquid during freezing can lead to cracks. It is also not recommended to store the filter near heating appliances - drying out the seals will shorten their service life.

For models with pre-cleaning cartridge (for example, Bestway 58397) additionally remove and rinse the cartridge under running water, then dry it.

7. Sand selection and alternative fillers

The filtration efficiency depends on the quality and type of filler. Manufacturer Bestway recommends using quartz sand fraction 0.4–0.8 mm, but there are other options on the market:

Filler type	Benefits	Disadvantages	Service life
Quartz sand	Low price, easy replacement, good filtration	Requires frequent washing, may cause caking	3–5 seasons
Glass sand	More efficient filtration, lasts longer	More expensive than quartz, more difficult to dispose of	5–7 seasons
Zeolite	Removes ammonia, improves water quality	High cost, requires special disposal	2–3 seasons
Activated carbon	Absorbs odors and organics	Gets clogged up quickly, dear.	Seasons 1–2

If you decide to use an alternative media, make sure it is compatible with your filter model. For example, zeolite may require more frequent backwashing and glass sand - special disposal (it cannot be thrown away with household waste).

When replacing sand, make sure that the new filler is dry and clean. Dust or foreign particles may clog the filter drainage system.

Frequently Asked Questions

Can I use the Bestway sand filter for seawater?

No, standard models are not suitable for salt water. Salt accelerates corrosion of metal parts and destroys seals. Sea water requires special filters with anti-corrosion coating.

How often should you change the sand in the filter?

On average - once every 3-5 seasons, but this depends on the intensity of use. If after backwashing the water remains cloudy or the pressure rises quickly, it is time to replace the sand.

Why doesn't the Bestway filter create pressure?

There may be several reasons: a clogged skimmer, an air leak in the hoses, a pump malfunction, or a lack of sand in the filter. Check all connections and sand level.

Can a Bestway filter be connected to a pool of another brand?

Yes, if the hose diameters match. Use adapters if necessary. The main thing is to ensure tight connections.

What to do if the pressure gauge shows zero?

This may indicate that the pressure gauge tube is clogged or broken. Try carefully clearing the hole with a thin wire. If it doesn't help, replace the pressure gauge.