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Thread: Help installing new pump

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    Help installing new pump

    I'm replacing my old Whisperflo with a new 2-speed Whisperflo. I've never done any PVC work on the pool before, so I could use some guidance.

    1) The old pump is glued in on both connections. How should I install the new pump? This video shows him using a threaded end on the inlet, a fitting extender and a union to a high temp pipe for the outlet. Is this the way to go?

    2) Can I tell what diameter piping I have without cutting off the motor first?

    3) He uses something called "joint stick" on the threaded fittings into the motor. Is this recommended?

    4) He uses "pool heavy" for the pvc cleaner/glue. Is this recommended?

    5) Any other tips?



    Here's my setup:
    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

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    Mod Squad jblizzle's Avatar
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    Re: Help installing new pump

    1). Those grey pipes are screwed into the pump. They should not have needed to be glued. Going to be a little tricky dealing with that 3-way in front of the pump due to lack free pipe. You could cut the grey pipe flush with the valve and then use a larger coupling to the OUTSIDE of the valve and a reducer back down to the existing pipe size.

    2) Looks like 2" to me.

    3) Use a non-hardening pipe dope that is compatible with PVC/CPVS/ABS.

    4) Any primer / solvent is fine if approved for PVC/CPVS/ABS.

    5) Is there anything wrong with the pump (wet end)? If not, then you could just put the new 2-speed motor on the existing pump and not have to worry about the plumbing.
    Jason, TFP Moderator
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  3. Back To Top    #3

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    Re: Help installing new pump

    I may just do the motor then. The pump actually just arrived from Amazon, and is all busted up. Was half hanging out of the box. Motor dented, footings are broken, capacitor cover is ripped off.

    How can I determine the correct motor to buy?

    220v, 2hp, 2-spd
    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

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    mas985's Avatar
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    Re: Help installing new pump

    What is the service factor of the motor? Should be on the label with SF. Or the model number of the pump WF-## or WFE-##.

    BTW, if you use 2.5" coupling reduces to 2" on the suction side valve (outside), you might be able to reuse the valve.
    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: Help installing new pump

    Quote Originally Posted by mas985 View Post
    What is the service factor of the motor? Should be on the label with SF. Or the model number of the pump WF-nn or WFE-nn.
    It's a wf-28, service factor 1.1.

    It's a single speed. Want to replace with a 2 speed.


    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

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    mas985's Avatar
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    Re: Help installing new pump

    That is an up rated 2 HP so your best bet is a Century B2983. It is a full rated 1.5 HP which is the same as a 2 HP up rated. But it is a high efficiency 2 speed motor which is more efficent than the motors that come with new pumps.
    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: Help installing new pump

    Great, thanks. Am I better off buying online or can these be found locally for similar prices? I'm in Dallas, so lots of options here.


    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

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    mas985's Avatar
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    Re: Help installing new pump

    I think the best prices will be on line.

    https://www.google.com/shopping/prod...rds=scoring:tp
    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

  9. Back To Top    #9

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    Help installing new pump

    So if I buy just the motor now and later on the wet side of the pump fails, I'm assuming I can repair or buy a new one (wet side)? Just trying to think down the road. Best I can tell the unit is 13 years old.


    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

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    mas985's Avatar
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    Re: Help installing new pump

    Buying the full wet end will probably cost you close to the price of the entire pump. Like any appliance, the cost of the parts is more than the cost of the whole unit.
    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: Help installing new pump

    Ok, gotcha. I may just buy a new unit then as originally planned. Being this old, I don't want to risk it.
    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

  12. Back To Top    #12

    Re: Help installing new pump

    If you cut the grey pipe in front of the pump flush with the front of the pump, you should be able to use a 2" MTA. The MTA would screw into the pump and then slip onto what's left of the grey pipe.

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    Re: Help installing new pump

    Quote Originally Posted by JamesW View Post
    If you cut the grey pipe in front of the pump flush with the front of the pump, you should be able to use a 2" MTA. The MTA would screw into the pump and then slip onto what's left of the grey pipe.
    Is that something I could find at Home Depot?




    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

  14. Back To Top    #14

    Re: Help installing new pump

    They should have 2" male threaded adaptors. Get schedule 40.

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    Re: Help installing new pump

    Thanks. I'm also considering using a union for the output side. Something like this: http://www.amazon.com/gp/product/B00...d=A3N0LFM77402
    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

  16. Back To Top    #16

    Re: Help installing new pump

    Yes, they work well and are a good choice. I would recommend using one for the in and out ports.

    You can find them cheaper than that example. Google noryl threaded union TPU-2.0.

  17. Back To Top    #17

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    Re: Help installing new pump

    I just don't know if I'll have room on that. Valve side.


    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

  18. Back To Top    #18

    Re: Help installing new pump

    You might have to move the pump back an inch or two. As long as you have room to do that, it should work. Another option would be to use a 2.5" to 2" bell reducer coupling over the valve and then a 2" schedule 80 cpvc nipple in the pump cut to fit.

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    Re: Help installing new pump

    Just got back from 2 hardware stores and a pool store. None of them carry ABS or PVC/CPVS/ABS solvent/glue/pipe dope. The only thing I was able to find was the schedule 40 2" MTA.

    They had some schedule 80 piping, but no one knew if it was the same as ABS. Pool store didn't sell any piping or supplies and the guy there didn't know what I should be using.

    Should I just use schedule 40 out of the pump?
    35k gal, sand, IG, diamond brite, Hayward Goldline T-CELL-15 Turbo SWG, Aquarite, Compool Lx3600

  20. Back To Top    #20

    Re: Help installing new pump

    Schedule 40 is fine. The only reason I don't prefer it is that if the pump runs dry and overheats the fittings, the fittings can shrink and cause the watertight seals to fail. That's why I prefer cpvc or noryl.

    Any pvc glue will work. Just follow good practices, including cure time, and it will be good.

    Note: I don't think that you have any abs that you need to glue. However, abs or cpvc technically requires glue that is specifically designed for that type of plastic. I have never had a problem with using pvc glue for pvc to cpvc or abs. However, you might want to get the correct glue if you feel it's necessary.

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