Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 2 12 LastLast
Results 1 to 20 of 25

Thread: Liquidator start-up, NO FLOW!!!!! help

  1. Back To Top    #1

    Join Date
    Mar 2007
    Location
    Texas
    Posts
    444

    Liquidator start-up, NO FLOW!!!!! help

    I have just finished hooking up my Liquidator, and before I start iy up, is there any thing I need to check for, any suggestions, any insight from anyone before I get it going?
    27' Round AG, 17,200 gallons, sand filter

  2. Back To Top    #2

    Join Date
    May 2008
    Location
    Fort Gratiot MI
    Posts
    66

    Re: Liquidator start-up

    Make sure you didnt put the suction fitting on the pool *pump* drain, that is the pump itself. I did this with mine and water came into the tank not go out. You have to put the fitting in the basket drain if you have one. Remove the basket drain pug and get a nylon 1/4" barb fitting, or of course just use the clamps and saddle that comes with it in the suction side.

    Hope this helps
    Brian
    24' round Vinyl liner Doughboy 48" deep 52" sidewall
    1hp Doughboy pump w/timer
    Doughboy Silica II filter with Zeosand
    Raypak 180,00 btu heater
    BBB method
    Sundance Optima '97 450 gal. spa w/Delzone ozonator
    Beats driving to the lake, and I'm only a block away from the lake!!

  3. Back To Top    #3

    Join Date
    Mar 2007
    Location
    Texas
    Posts
    444

    Re: Liquidator start-up

    Ok, i guess I am a dummy, I am not following you, and My LQ tank did fill but I can not get it to come out.

    What I have is, from the LQ I come out to the flow adjustment valve, then from the flow adjustment valve I go to the flow indicator, from the flow indicator I go to the chack valve, from the check valve I connect to my pipe between my skimmer and the pump. Is this correct? But I do not get any flow out of the LQ
    27' Round AG, 17,200 gallons, sand filter

  4. Back To Top    #4

    Join Date
    May 2008
    Location
    Fort Gratiot MI
    Posts
    66

    Re: Liquidator start-up

    You dont need the check valve on the output side, that maybe why you arent getting aything out of it. I didnt put mine in the output side only the input side has a check valve. Also make sure the check valve arrow is pointing towards the pipe, not the LQ.

    The way I checked so see if I was going to get suction is, when the LQ was filling with water and wasnt full to the output float, I lifted up the float for the output side. When you do this if there isnt any water up to that output side it should suck air into the line.

    Can you take a pciture of the ouptut side and post it, that may help.

    Brian
    24' round Vinyl liner Doughboy 48" deep 52" sidewall
    1hp Doughboy pump w/timer
    Doughboy Silica II filter with Zeosand
    Raypak 180,00 btu heater
    BBB method
    Sundance Optima '97 450 gal. spa w/Delzone ozonator
    Beats driving to the lake, and I'm only a block away from the lake!!

  5. Back To Top    #5

    Join Date
    Mar 2007
    Location
    Texas
    Posts
    444

    Re: Liquidator start-up

    Let me see if I can figure out how to post a pic
    27' Round AG, 17,200 gallons, sand filter

  6. Back To Top    #6

    Join Date
    Mar 2007
    Location
    Texas
    Posts
    444

    Re: Liquidator start-up

    Maybe these pics will post, here is my set up for the outlet side, and I get NO flow.


    Do not look at the trash Never clean up till the job is done!!!



    Instructions says to make sure the arrow one the adjustable flow valve faces away from the Liquidator, Flow valve does not have an arrow on it.
    27' Round AG, 17,200 gallons, sand filter

  7. Back To Top    #7

    Re: Liquidator start-up, NO FLOW!!!!! help

    Try to swap your check valves, it may be that you have a bad one. It appears you have a nice setup. Love the way you connected the suction line. The direction of the control valve won't have any impact of any significance on the flow rates. The instruction on the side hanging off shows what direction the control valve should face however.
    ~25k G 20x40 Free form plaster
    Pentair FNS Plus 48 sq/ft DE
    Pentair Challenger 1 HP High Flow E.E.
    Zodiac G4
    8 gal Liquidator 3/8 line conversion
    Sundance Palermo Spa w/ozone and gazebo

    LQ 3/8 Line Conversion

  8. Back To Top    #8

    Join Date
    Mar 2007
    Location
    Texas
    Posts
    444

    Re: Liquidator start-up, NO FLOW!!!!! help

    Well I removed the check valve on the output side and I now get flow. Duraliegh this may be a question you might could find an answer out for me/us. Why do they supply and tell you to install a check valve on the output side , when putting one in makes it NOT work and it works with out one?
    27' Round AG, 17,200 gallons, sand filter

  9. Back To Top    #9

    Re: Liquidator start-up, NO FLOW!!!!! help

    Quote Originally Posted by Poolidiot
    Well I removed the check valve on the output side and I now get flow. Duraliegh this may be a question you might could find an answer out for me/us. Why do they supply and tell you to install a check valve on the output side , when putting one in makes it NOT work and it works with out one?
    I suspect you may have a defective one. It works with or without it, you just get a bit more flow without it. Based on all the other work you've done I doubt you installed it backwards
    ~25k G 20x40 Free form plaster
    Pentair FNS Plus 48 sq/ft DE
    Pentair Challenger 1 HP High Flow E.E.
    Zodiac G4
    8 gal Liquidator 3/8 line conversion
    Sundance Palermo Spa w/ozone and gazebo

    LQ 3/8 Line Conversion

  10. Back To Top    #10

    Join Date
    Jun 2007
    Location
    New Orleans
    Posts
    111

    Re: Liquidator start-up, NO FLOW!!!!! help

    Poolidiot, can you tell me the sizes of that tee and what kind of fittings you have coming out of it?

    Thanks
    21' Round AGP, 10k gallons - 2hp 2spd pump - 300lb sand filter - Stenner Chlorine Injector - Pool Rover

  11. Back To Top    #11

    Join Date
    Mar 2007
    Location
    Texas
    Posts
    444

    Re: Liquidator start-up, NO FLOW!!!!! help

    Quote Originally Posted by kmb997
    Poolidiot, can you tell me the sizes of that tee and what kind of fittings you have coming out of it?

    Thanks
    The "T" is a 1 1/2" x 1 1/2" x 3/4"(could not find 1 1/2" x 1 1/2" x 1/2"), then I had to get a 3/4" slip reducer down to 1/2" threads. then I put a 1/2" 90 one end with male threads and the other has female threads. Then I screwed in a 1/2" thread x 1/4" barb fitting.Hope this helps.
    27' Round AG, 17,200 gallons, sand filter

  12. Back To Top    #12

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,084

    Re: Liquidator start-up, NO FLOW!!!!! help

    The check valves that HASA puts in the LQ are dumb, IMO. They are set to resist forward flow up to about 1-2psi. This is so they can operate in any position and don't rely on gravity for their "checking" capability.

    However, there is no need for them to have that much resistance and, in some cases, supply so much resistance the LQ cannot overcome them and operate.

    I suggest the output side of the LQ not have a check valve installed although there is a circumstance where it is necessary and I can't, for the life of me, remember that circumstance. Mine is removed.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  13. Back To Top    #13

    Re: Liquidator start-up, NO FLOW!!!!! help

    If the water level of your pool is above the LQ, then in theory the water from the pool is going to drain down in to the outlet of the LQ and overflow the tank. The inlet side shuts off when the tank gets too full, the outlet side turns on when the tank is full enough. So in the case of an above ground pool the water might (and should) back flow in the LQ causing the tank to overflow.

    I would suggest a better check valve from US Plastics.

    One of these Check valves

    and two of these

    Fittings

    Just get the fittings to match the NPT pipe size of the valves.

    The check valves mentioned can be disassembled and the springs altered (or even removed) if needed to adjust the pressure setting.
    ~25k G 20x40 Free form plaster
    Pentair FNS Plus 48 sq/ft DE
    Pentair Challenger 1 HP High Flow E.E.
    Zodiac G4
    8 gal Liquidator 3/8 line conversion
    Sundance Palermo Spa w/ozone and gazebo

    LQ 3/8 Line Conversion

  14. Back To Top    #14

    Join Date
    Mar 2007
    Location
    Texas
    Posts
    444

    Re: Liquidator start-up, NO FLOW!!!!! help

    Quote Originally Posted by Rabbit
    So in the case of an above ground pool the water might (and should) back flow in the LQ causing the tank to overflow.
    Mine is an ABG pool, so you are saying I am screwed with out one?
    27' Round AG, 17,200 gallons, sand filter

  15. Back To Top    #15

    Join Date
    Mar 2007
    Location
    Texas
    Posts
    444

    Re: Liquidator start-up, NO FLOW!!!!! help

    Quote Originally Posted by Rabbit

    The check valves mentioned can be disassembled and the springs altered (or even removed) if needed to adjust the pressure setting.
    I leave for vacation Tuesday morning, thats all I need for my LQ to over flow while I am gone. You say I can take the valve apart that came with the LQ and remove the spring and it will work? Are they made where you can take them apart?
    27' Round AG, 17,200 gallons, sand filter

  16. Back To Top    #16

    Join Date
    May 2008
    Location
    Fort Gratiot MI
    Posts
    66

    Re: Liquidator start-up, NO FLOW!!!!! help

    As long as your pump is running, (I usually keep mine running 24/7 until today) no you arent screwed.

    If it shuts off yes, your screwed, it will backflow into the LQ. I just tested mine with the valve full open and in about 1 hr the level in the LQ went up about 2" . I have a 24 ft round above ground pool.

    Looks like I will be adding my check valve in tomorrow and hopefully mine is ok.

    Hope this helps
    Brian
    24' round Vinyl liner Doughboy 48" deep 52" sidewall
    1hp Doughboy pump w/timer
    Doughboy Silica II filter with Zeosand
    Raypak 180,00 btu heater
    BBB method
    Sundance Optima '97 450 gal. spa w/Delzone ozonator
    Beats driving to the lake, and I'm only a block away from the lake!!

  17. Back To Top    #17

    Re: Liquidator start-up, NO FLOW!!!!! help

    Quote Originally Posted by Poolidiot
    Quote Originally Posted by Rabbit
    So in the case of an above ground pool the water might (and should) back flow in the LQ causing the tank to overflow.
    Mine is an ABG pool, so you are saying I am screwed with out one?
    Well, logic tells me it should drain back. There are always exceptions however where the water pressures in various components might cause sort of a vapor (or in this case water) lock that prevents the reverse flow because of pressure differentials.

    Bottom line, keep an eye on it. Your not screwed you may just need to get a different check valve. So far I'm loving my LQ and don't regret the purchase. Was it a bit trying at first, sure thing. Just remember, even the best of wines can give you a headache
    ~25k G 20x40 Free form plaster
    Pentair FNS Plus 48 sq/ft DE
    Pentair Challenger 1 HP High Flow E.E.
    Zodiac G4
    8 gal Liquidator 3/8 line conversion
    Sundance Palermo Spa w/ozone and gazebo

    LQ 3/8 Line Conversion

  18. Back To Top    #18

    Re: Liquidator start-up, NO FLOW!!!!! help

    Quote Originally Posted by Poolidiot
    Quote Originally Posted by Rabbit

    The check valves mentioned can be disassembled and the springs altered (or even removed) if needed to adjust the pressure setting.
    I leave for vacation Tuesday morning, thats all I need for my LQ to over flow while I am gone. You say I can take the valve apart that came with the LQ and remove the spring and it will work? Are they made where you can take them apart?
    The one I suggest to replace the LQ one you can take apart. The one that came with it...no such luck. I tried
    ~25k G 20x40 Free form plaster
    Pentair FNS Plus 48 sq/ft DE
    Pentair Challenger 1 HP High Flow E.E.
    Zodiac G4
    8 gal Liquidator 3/8 line conversion
    Sundance Palermo Spa w/ozone and gazebo

    LQ 3/8 Line Conversion

  19. Back To Top    #19

    Join Date
    May 2008
    Location
    Fort Gratiot MI
    Posts
    66

    Re: Liquidator start-up, NO FLOW!!!!! help

    Well I just went out and installed my check valve in the output side and it dropped the flowmeter down to about 2-21/2 is all I can get out of it now.

    I am going to still try it at the low level and just have the 3/8" barbs and, other things to up the flow, on hand, just in case it doesnt give me enough chlorine.

    It seems that when the LQ ran without the check valve in the output side, and with the flow at 3 me going from 6.5ppm CL in my pool amd running overnight, and then in the morining the CL level was up to 13 ppm even at a low flow rate I should still be ok.

    Maybe the LQ needs the larger dia. hose and fittings for some above ground pools, and most in ground pools dont have a problem because of no gravity and no back pressure on the output line. Just my opinion though.

    Brian
    24' round Vinyl liner Doughboy 48" deep 52" sidewall
    1hp Doughboy pump w/timer
    Doughboy Silica II filter with Zeosand
    Raypak 180,00 btu heater
    BBB method
    Sundance Optima '97 450 gal. spa w/Delzone ozonator
    Beats driving to the lake, and I'm only a block away from the lake!!

  20. Back To Top    #20

    Join Date
    Mar 2007
    Location
    Virginia Beach
    Posts
    262

    Re: Liquidator start-up, NO FLOW!!!!! help

    Your problem is that you don't have a long enough suction supply line. This issue is common with the LQ and above ground pools. It is addressed in a different post somewhere on this site. Most inground pools have 10-20ft supply lines and that allows the line to build up adequate suction near the pump inlet. You have two easy solutions: increase the length of the supply line or restrict flow through the skimmer line to build up more head. I see that you have a shut off valve on the supply line closer to the skimmer that the LQ connection. Try closing that valve off partially until you build up enough flow. Doing this might even benefit your pump because they are optimized to deal with a specific amount of water resistance. Haas also recommend that the LQ connection be right next to the pump. As a test, you might try to connect the LQ into the pump drain plug as well.

    You need the check valves if the float holes on on your LQ are below water level. If they are above water level then you can eliminate them for increased flow.
    6000 gal inground fiberglass
    1.5hp pump / sand filter
    Liquidator

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •