I winterized my pool by blowing out the line, and blocking everything off so there was no water in the pipes (avoid freezing)
This spring, when getting everything into operation, I noticed that there was a lot of sand (very fine, and brown) at the bottom of the pool. I vacuumed, and noticed that during vacuuming sand was blowing out the jets. I've run a backwash, and most of the sand is out, but a little showed up again. I'm concerned that something may be wrong with my Hayward sand filter
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Re: There's sand in my pool!
I have had this issue with several clients and before worrying, you might have had sand being drawn back into pool lines during winterization. this happens when you blow out lines, plug holes, but keeping it pressurized. if it keeps happening check draw fins on bottom of filter.
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Remove all drain plugs, open any valve you can and have. split apart any union, and depending on the part of the country you live in, the permafrost is a factor. If you freeze below ground, then you will also need to empty your pool down below the lowest inlet fitting and then blow the water out of the lines.
Once clear of excess water, plug the holes so rain water does not refill them!
heater will have 2-4 drain/winter plugs
also remove the pressure switch
pump will normally have 2 plugs
Open & remove lid from hair & lint pot
Pool sweep booster pump has 1 plug
Any low spots in the plumbing will trap water in them. Drill & tap a hole - 1/4" Normal pipe thread - that is the most common size of a winterizing drain plug. Others may just cut the pipe right at the lowest spot and glue in a union for future winterizing.
The Hayward Pro Series Sand Filter uses an O-Ring on the stand pipe to separate water returning to the pool, after being filtered, from water coming into the filter from the pool. If this O-Ring is broken, missing or sufficiently worn, small particles of dirt and sand can by-pass the sand filter and return to the pool without being properly filtered by the sand filter.
This can be especially evident just after backwash and rinsing of the sand filter bed. During this time water flows up through the sand bed, opposite the direction in normal operation. This forces the top-most material of the sand bed to dislodge and wash out of the filter to waste. It can also force fine particles to enter through a faulty O-Ring into the pool return stand pipe. Then, when returning the filter system to normal operating mode, those fine particles enter the pool through the water return piping and collect on the bottom of the pool -- mostly small sand particles but potentially filtered debris particles that were captured on top of the sand bed.
To avoid this problem it's wise to replace this O-Ring every few years. And make sure to follow the manufacturer's recommendations regarding the amount of sand to fill when replacing sand. It's important to keep the top of the sand bed at the correct level to insure proper filtering and minimize stray particles coming back into the return water.
sand in your pool is a sign that you may have damage inside your sand filter. it is not uncommon for laterals to break during winter months. also, as the sand wears, it becomes smaller and may pass through.
remember that the filter sand is white. if you have sand in the pool that doesnt look like filter sand, you may have a problem with a broken line back to pool. keep an eye on your water level as you will lose water with this scenario
by Osko Pool n SpaInformation
By following the provided instructions, you will be able to professionally close your pool for the winter season. Additionally, you will protect it from winters abuse and make opening it next season...simple.
a) Standard Screw Driver
b) Phillips Screw Driver
c) Ratchet Set
e) Plumber Pliers
f) Sump Pump
g) Extension Cord
h) Garden Hose
i) Five Gallon Bucket
j) Air Pump or Shop Vac
k) Pool Vac & Accessories
a) Pool Shock
c) Chlorinating Tablets
a) Winter Cover
b) Pool Pillows or Inner-tubes
c) Chlorine Float Dispenser
d) Water Bags (for ingrounds only)
Step One - Debris & Chemicals
Remove any debris from pool water by use of a leaf rake attachment.
Add the appropriate amount of shock treatment to the pool water, as prescribed on the packaging.
Add the appropriate amount of algecide to the pool water, as prescribed on the packaging.
Run your filter for the appropriate time to circulate all water once.
(see your filter documentation for your size pool)
Install your floating Dispenser and winterizing tablets.
Step Two - Vacuum & Water Level
Vacuum your pool while setting your filter to the "back wash" or "waste" setting.
(this will help lower your water level)
After vacuuming, install the sump pump and drain pool to about 6 inches below your thru-the-wall skimmer.
Step Three - Parts Dissassembly & Cleaning
Disconnect all ladders, filter systems, hoses, solar reels and/or other accessories.
Using standard household cleansers, thoroughly clean all ladders, solar reels and/or other accessories.
Dissassemble filtration system.
Remove sand, cartridge or DE powder from your filtration tank.
Thoroughly clean all filter system parts.
Allow all items to dry.
Store all items in an area that will not be subject to freezing temperatures.
Step Four - Pillow & Cover Installation
Inflate all pool pillows or inner-tubes.
Install one pillow for every 15' of linear water surface.
(example: a 15' x 30' would require at least two pillows)
Tie pillows to pool area via nylon rope and place equally with respects to pool walls and each other.
(this is extremely important! This prevents freeze damage)
Install winter cover as prescribed by the covers manufacturer.
Step Five - Winter Tips
During the winter months, remove any excess snow from the winter cover.
(If you have a solid cover, this will prevent excessive weight form tearing you cover)
(If you have a mesh cover, this will prevent excessive water build up)
Hey, Your Finished! Congratulations, you just saved money while doing a professional job
Typically, the cracking of internal filter tank components is due to freezing temperatures over the Winter season. You should always COMPLETELY drain all water from your filter and store it inside during the winter.
Another reason is over chlorination of your pool water and/or adding chemicals directly to your water thru the wall skimmer.
this is taken right from a jewel series QCA hot tub manual.....Winterizing In very cold weather you may not want to venture outside to use your spa. In this case, you may move it to a heated area, or leave it as is until the weather warms. If you do leave the spa unused for a long period of time in severely cold weather, you should winterize the spa to avoid accidental freezing due to a power or equipment failure.. Follow these easy steps: Turn power to the spa OFF. Drain the spa. Use a wet vac to **** or blow out the air injectors, water jets and water suction fittings. Add 1-3 gallons of RV antifreeze, depending on the size of the spa, to all the air injectors, water jets, suction drains, and filter. Caution: Any lines not receiving adequate antifreeze are subject to freeze damage!
The manual might provide some insight but usually the Intex pools are vinyl and are taken down and stored indoors for the winter. This makes a lot of sense in most areas because they won't be used in the winter and if you kept it set up the sun, wind, and temperature affects the plastics, etc. so that its lifespan is reduced. If it is stored in a place that freezes then you would need to make double sure there is no water in the equipment.
Sand can be sent to the pool for several reasons. If it is piped in reverse, if the laterals, their manifold, pipes connected to the manifold is damaged or there is a problem in the backwash valve. The water from the filter enters the filter above the sand where it soaks through the sand, through the laterals and out the return pipe to the filter. If the water is flowing from the pool into the laterals and through the sand and into the pool some sand will go with the water into the pool. In addition, the laterals will get filled with dirt from the pool. The best way to know if there is a damaged lateral, manifold or pipe is to remove most of the sand and inspect these parts. After the filter is worked on, If some sand was in the laterals, manifold or pipes when a system is started it should be sent into the pool and find can then be brushed into the main drain and be caught in the filter. I hope this helps.
Hey! Mine was doing the same thing. I had the hoses switched up. I had the hose from the pump connected to the port marked RETURN (on the Hayward vari pump valve). Not good! I also had the return line hose (from pool) connected to the port marked pump. It happens! The problem is I tried EVERYTHING ELSE before I found my error. This includes a trip to Leslie's to buy a brand new multi port valve (good thing they have a return policy) AND changing out my relatively new sand in the filter AND taking apart the vertical tube and each individual flange at the bottom to clean them out. Please check your hoses FIRST if it won't backwash! By the way...I've been a pool owner for 17 years. I think my experience worked against me since I didn't recheck my work at setup. NOTE: It might SEEM like your filter is working because you get suction at the skimmer and water rushing thru the return line into the pool. It's not working if your lines are backwards like mine were! My water started turning green!