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Thread: Need help blowing out lines for closing. Thanks

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    wmorge's Avatar
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    Need help blowing out lines for closing. Thanks

    Hi all! Thanks to TFP and BBB I still have a crystal clear pool after clearing an algae mess. It's been so easy. We are closing the pool now. I am having trouble blowing out my lines with a pancake compressor. We also tried a larger compressor, both fitted into the pump. Now we are using our leaf blower into one of the return lines. Nothing is working.. not a single bubble in the water. We have 3 returns and 1 skimmer. What do you put the multivalve on? We put it on recirculate.

    Thank you for your help!

    Nita
    16x32 I.G. Vinyl, Hayward Pro High-Rate Sand S220T, Vari-Flo XL Valve, Hayward Super Pump 1Hp , Great White cleaner, Hayward W530 Leaf Canister, TF100, Pool Skim.

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    Re: Need help blowing out lines for closing. Thanks

    Have you drained the filter?
    The Original Leak Specialists.

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    Mod Squad Bama Rambler's Avatar
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    Re: Need help blowing out lines for closing. Thanks

    So you're blowing backward through a return line through the filter and trying to get air out of where? The skimmer line, the pump basket, etc?
    Is there a check valve in the return line somwhere?

    Are you hearing air coming out anywhere? It has to be coming out somewhere.
    Do you have the compressor nozzle sealed against the return so it doesn't blow back?

    Having the multiport set to recirc is correct for what you're trying to do.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    wmorge's Avatar
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    Re: Need help blowing out lines for closing. Thanks

    Filter and pump is emptied. Pool is drained below skimmer, but above the returns. We have 3 returns: 2 on 1 line and 1 on the other. First we tried a small pancake compressor hooked into the pump drain plug. First: We closed one valve. and started our compressor and waited seeing no signs of air bubbles. Second: we borrowed a larger compressor with the same results. Third: we rigged up our leaf blower onto a small flex tube and fed it directly into a line... still no signs of air. We did see some movement in the water so I placed one end of a hose at a return and the other above water to actually be able to see the water come out. We did get some water but not as we expected. With all lines plugged except one, Husband would run the blower at high and low power to get a cup or so out , like small pockets of water blowing out at intervals. After watching our first line do this 5 or 6 spurts.. we plugged that line and went to the other line.. same thing 5 or 6 spurts of water at coming out in intervals. I can imagine the lines holding that much water.. but apparently so.

    One of our local pool store charges $95 to blow out lines.. We can go buy a nice 6hp shop vac for that! wow. We will get there.
    16x32 I.G. Vinyl, Hayward Pro High-Rate Sand S220T, Vari-Flo XL Valve, Hayward Super Pump 1Hp , Great White cleaner, Hayward W530 Leaf Canister, TF100, Pool Skim.

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    bmann71's Avatar
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    Re: Need help blowing out lines for closing. Thanks

    Hello, you are only an hour or so from my location so I can only assume your water temp is pretty close to mine (70°). If this is the case you might want to check your water periodically over the winter to make sure you don't open to a green mess in the spring (I speak from experience). They suggest you wait till your water is 60° to close.
    Ponduke
    20,000 gal/ Fiberglass IG/ Sta-rite s7m120 cartridge filter/Sta-rite SR400NA 400,000 btu heater/Polaris 360 Cleaner/K-2006 Test Kit
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    Re: Need help blowing out lines for closing. Thanks

    Quote Originally Posted by wmorge
    Hi all! Thanks to TFP and BBB I still have a crystal clear pool after clearing an algae mess. It's been so easy. We are closing the pool now. I am having trouble blowing out my lines with a pancake compressor. We also tried a larger compressor, both fitted into the pump. Now we are using our leaf blower into one of the return lines. Nothing is working.. not a single bubble in the water. We have 3 returns and 1 skimmer. What do you put the multivalve on? We put it on recirculate.

    Thank you for your help!

    Nita
    I also blow mine out with a pancake compressor attached to the pump. I back wash before the water is lowered. Leave the multi port valve on filter and just turn on the compressor.

    The skimmers will bubble first, then the 2 returns then the main drain.

    Make sure the air release valve is closed on the bottom of the compressor tank or your compressor won't push air.
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

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    Re: Need help blowing out lines for closing. Thanks

    Hello, I have an old compressor that I use. It doesn't have enough airflow or pressure to move the water out of the lines by itself. The way I get the pressure and volume to make sure the lines are clear at closing is, after backwashing and cleaning the filter and pump, I put them back together. Then close the valves leading back to the pool and let the pressure build up in the filter itself - have to be careful here and watch the pressure. When the pressure is high enough, I use a little over the normal operating pressure, I set the valves so the line I am going to plug is the only outlet from the filter/pump. I open the valve and get both the needed pressure and volume. It might take a few times of doing this but eventually there will be only a fine mist from the skimmer lines and heater drain lines. For the bottom drain and return lines, since they are still under water, I follow the same procedure but have a plug ready to install while the air is still coming from the lines. For the bottom drain I just use the valve(s) to close off that line while air is coming from the drain.
    The control valves that I have will allow me to move the control lever all the way around to block the flow from the filter/pump. I have to loosen the set screw so I can lift the lever over the stop tab. Check the operation of the valves before doing this - DO NOT FORCE the valves.
    13.5 K plaster, Pentair IntelliFlo Variable Speed Pump, PacFab 60 sqft DE filter using Cellulose fiber DE alternative, TF-100 Test Kit, Aquabot Turbo T2 & Polaris 360

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    wmorge's Avatar
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    Re: Need help blowing out lines for closing. Thanks

    It looks like we did everything correctly!. Everything's up and running.... No busted lines!! I was worried because we had a very cold and snowy winter!..
    16x32 I.G. Vinyl, Hayward Pro High-Rate Sand S220T, Vari-Flo XL Valve, Hayward Super Pump 1Hp , Great White cleaner, Hayward W530 Leaf Canister, TF100, Pool Skim.

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