1. The importance of water filters in swimming pools
Swimming pool filters are the central equipment in the entire water circulation system. Whether your pool is a family pool, a hotel pool or a resort pool, properly operating the filter will help:
Removes trash, dirt and tiny impurities in water.
Prevents moss, algae and harmful bacteria.
Keep water clear, reduce chemical use.
Extends the life of pumps, pipes and other equipment.
Without a properly functioning filtration system, pool water will quickly become polluted, causing unpleasant odors and affecting the health of swimmers.
See also: https://saigonpoolspa9.blogspot.com/2025/11/huong-dan-su-dung-van-hanh-may-loc-nuoc-ho-boi.html
2. Structure and operating principle of swimming pool water filter
A standard swimming pool water filtration system usually includes:
Water pump: sucks water from the lake and passes it through the filter.
Sand or glass filter: retains impurities, dust and algae.
Multi-function hand valve (6 modes): adjusts the operating mode.
Suction and return pipes: carry water to and from the lake.
Pressure gauge: helps users know when to wash the filter tank.
Working principle:
The pump sucks water → into the filter tank → water goes through the filter sand layer → impurities are retained → clean water is returned to the lake.
This cycle repeats continuously, ensuring the water is always clear and safe.
3. How to operate a pool filter with pipes
3.1. Understand the function of the 6-mode manual valve
The 6-mode manual valve is the most important part that helps you control the filtration system. Each mode has its own task:
Mode of Action Time of Use
Filter (Filter) Filters pond water, retains dirt. Use daily
Backwash Clean the sand layer in the filter tank when the water is weak or the pressure is high
Rinse (Backwash) Rinse the pipe after backwash After Backwash
Waste (Discharge) Discharge water directly to the outside, without filtering When removing residue or reducing water level
Recirculation Allow water to circulate without filtration When treating chemicals
Close (Close) Turn off the entire water system when cleaning or maintaining
⚠️ Important note:
Always turn off the pump before turning the valve to avoid cracking the pipe or damaging the valve seal.
After backwashing, select Rinse for about 30 seconds – 1 minute before returning to Filter mode.
3.2. Appropriate water filtration time
To keep the water clean, you need to operate the filter according to the recommended time:
Family pond: 5–6 hours/day.
Commercial and public pools: 8–10 hours/day.
Backwash the filter: at least once a week or when the pressure increases above 0.3 bar.
💡 Tip: Run the filter in the morning or evening to save electricity and help the water circulate evenly.
3.3. How to change pool filter sand
After a period of use (12-24 months), the filter sand becomes saturated and can no longer hold sediment. At that time, new sand needs to be replaced to ensure filtration efficiency.
Steps to change sand:
Turn off all electrical systems and pumps.
Remove the hand valve from the filter tank.
Remove all old sand and clean the tank.
Pour new sand (quartz sand or specialized glass sand).
Backwash before re-operation.
🚫 Do not use construction sand, because uneven grain size can easily cause blockage.
4. How to operate a pipeless pool filter (smart filter)
4.1. Outstanding features
A pipeless pool filter is a device that integrates the entire filtration system in one block, without the need for complicated piping.
Advantage:
Quick installation, just place it on the pool wall.
Does not take up technical space.
Energy saving, smooth operation.
Suitable for small ponds, family ponds or composite ponds.
4.2. How to use
Place the machine in the correct position on the tank wall, ensuring stability.
Plug in, turn on the switch.
Check the water inlet and outlet.
After 5–7 days, remove the filter basket for cleaning.
Clean the main filter every month with a high pressure hose.
⚠️ Note: Do not operate the machine when the water level is low or there is no water.
5. Instructions for maintaining swimming pool filters
Regular maintenance helps increase the life and reduce damage to the filter system.
5.1. Periodic inspection
Monitor pressure gauge: if it increases by 0.3–0.5 bar → backwash is required.
Check pipes and connections for leaks.
Make sure the pump has enough water to prime before running.
5.2. General cleaning
Pick up trash and leaves every day.
Vacuum the bottom with a robot or hand vacuum 2-3 times/week.
Maintain water pH from 7.2 – 7.6 to avoid equipment corrosion.
5.3. Intensive maintenance
Check the pump impeller, seals and bearings every 6 months.
Clean the electrical cabinet and fan of the purifier.
If not in use for a long time, unplug and cover the device.
6. Common errors and how to handle them
Phenomenon Cause Solution
Turbid lake water Dirty sand, weak filter Backwash or change sand
Pump makes loud noise Lack of priming water, garbage in pump Add water, clean pump
High pressure Dirt in the tank Backwash the filter tank
Weak water flow. Suction pipe is clogged or leaking. Check and tighten the joints.
7. Benefits of proper operation
✅ Lake water is always clear and odorless.
✅ Save chemicals and electricity.
✅ Reduce maintenance and repair costs.
✅ The device operates smoothly and is durable.
✅ Maintain natural beauty and clean pool all year round.
8. Saigonpoolspa services
Saigonpoolspa is a leading professional unit in design - construction - installation and maintenance of swimming pool water filtration systems in Vietnam.
We commit to:
Genuine imported equipment from Emaux, Minder, Astralpool, Kripsol, Waterco...
Free consultation, choose the right capacity for the pond.
Maintenance - sand replacement - on-site repair, fast.
24/7 technical support, long term warranty.
📞 Hotline: 0902 722 748
🌐 Website: https://saigonpoolspa.com
9. Frequently Asked Questions (FAQs)
1️⃣ How long should a pool filter run per day?
👉 Average 5-8 hours/day depending on tank capacity and usage level.
2️⃣ When should the filter sand be changed?
👉 After 12–24 months or when the water is cloudy or the pressure is high.
3️⃣ How often should I backwash?
👉 1-2 times/week, depending on how dirty the water is.
4️⃣ Should I change the litter at home?
👉 It is possible, but if you are not technically savvy, you should ask Saigonpoolspa for support to avoid mistakes.
5️⃣ Do smart filters need maintenance?
👉 Yes, you should clean the dustbin every week and the filter every month.
10. Conclusion
Properly operating your pool filter will save you money, maintain water quality, and extend the life of your equipment.
Let Saigonpoolspa – Vietnam's leading swimming pool expert – accompany you in installation, maintenance and consulting on optimal water filtration solutions for all types of swimming pools.
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