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Thread: Air from blower, but no water thru one spa jet

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    Air from blower, but no water thru one spa jet

    I have a 16,000 gal plaster pool/spa spillover combo. The spa has a 1 1/2" drain at the bottom that leads to the main 3/4 hp whisperflo pump. The pumped water goes through the filter and heater then returns to the spa on a side wall inlet. I also have a 2 hp whisperflo dedicated spa jet pump With 2" PVC piping. There is also a 1 hp Mariah blower by Hydro Air that is separated by a jandy valve that controls air flow between the floor of the spa or the side jets. The dedicated jet pump is fueled by (2) 2" drains at the bottom of the spa. I have 4 jets. Jets 1, 2 and 4 work great. With just the dedicated pump on, the water shoots out with great power. Jet #3 on the other hand, is auctioning the water from the spa. When I add in the air from the blower, once again, jets 1, 2 and 4 work perfect. Jet 3 shoots out a lot of air that merely bubbles to the surface. Still no water from the dedicated pump.

    Today, I shot air from my compressor through the jet towards the pump. First, I closed the jandy valve for the blower side jets to create pressure and capped all the other jets. The air from the compressor went into the pump filter basket area from the jet with no problems. No evidence of any debris. I then tried it the opposite way and the air came thru the jet. So why am I not getting any water in that jet, and even worse suction? Could it still be possible the pipe is clogged? If so, what do I do? Or is this some type of auxillery suction pipe to augment the floor drain?
    The size of your pool in gallons
    If your pool is an AG (above ground) or IG (in ground)
    If it's IG, tell us if it's vinyl, plaster/pebble, or fiberglass
    The type of filter you have (sand, DE, cartridge) and, if you know, the size, model number or flow rate of the filter.
    If you know, please tell us the size pump in HP. Also mention if is it a two speed or variable speed pump.
    Installed: May 9th, 2013
    Other significant accessories or options, such as a spa , SWG, or cleaner

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    mas985's Avatar
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    May 2007
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    Pleasanton, CA
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    Re: Air from blower, but no water thru one spa jet

    Is this a new spa? The air line is separate from the water line so while the air line may be clear the water line is probably clogged. You can remove the outer jet fitting and then the jet nozzle which is deep inside the spa with a long socket wrench. Try running the spa without the nozzle to see if that clears it out.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: Air from blower, but no water thru one spa jet

    I tried removing the jet nozzle with a socket, but I can"t seem to find the right size socket. Do u have any idea what size to try since I can't see the nozzle inside?
    The size of your pool in gallons
    If your pool is an AG (above ground) or IG (in ground)
    If it's IG, tell us if it's vinyl, plaster/pebble, or fiberglass
    The type of filter you have (sand, DE, cartridge) and, if you know, the size, model number or flow rate of the filter.
    If you know, please tell us the size pump in HP. Also mention if is it a two speed or variable speed pump.
    Installed: May 9th, 2013
    Other significant accessories or options, such as a spa , SWG, or cleaner

  4. Back To Top    #4
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,489

    Re: Air from blower, but no water thru one spa jet

    Mine are 9/16" but I am not sure if they are all that size.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: Air from blower, but no water thru one spa jet

    Thanks Mark. I used a small flashlight and was able to see that there was what appeared to be a pebble blocking the orifice. I used a long small rod to reach in there just to see if I could move the rock. When that rod penetrated the orifice, dirt and small pebbles came gushing out. It now works!!! Unbelievable, this site is the bomb, I have been able to fix two problems in as many days when I had given up and resigned myself that my pool was just old and falling apart. U guys r the best. Thanks for the help.
    The size of your pool in gallons
    If your pool is an AG (above ground) or IG (in ground)
    If it's IG, tell us if it's vinyl, plaster/pebble, or fiberglass
    The type of filter you have (sand, DE, cartridge) and, if you know, the size, model number or flow rate of the filter.
    If you know, please tell us the size pump in HP. Also mention if is it a two speed or variable speed pump.
    Installed: May 9th, 2013
    Other significant accessories or options, such as a spa , SWG, or cleaner

  6. Back To Top    #6
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,489

    Re: Air from blower, but no water thru one spa jet

    Awesome
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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