Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Noisy jet pump

  1. #1

    Noisy jet pump

    We lost power early this morning due to the ice storm and when the power was restored about 6 hours later, my pump ran continually for about 25 minutes. In researching what could be the cause, I came to the conclusion that the pump had lost prime. Unfortunately, the seal is now leaking around the input shaft. Pump is at least 15 years lod and should probably be replaced anyway. It is a Flint/Walling vertical mount and I cannot tell the hp. There are two 1" lines feeding the pump. It runs on 220v and I will assume that it is a deep well vertical jet.
    My question is - This pump is in our crawlspace and when it runs it makes a heck of a racket. Is there a manufacturer which is known to be quieter than others? If I have to replace it due to the bad seal, I would want to eliminate this annoyance if possible.

  2. #2
    Pump guy speedbump's Avatar
    Join Date
    Jun 2005
    Location
    Murphy, NC. USA.
    Posts
    11,785
    If the pipes screw into the bottom of the pump, you can replace it with my Betta Flo vertical. Mine start out at 1hp and go to two hp. If you know the depth to water in your well, it would be very helpful in sizing a pump. If your F&W bolts to a casing adaptor, you may have problems. Unless the adaptor is threaded.

    The pump being noisy is probably the bearings in the motor. There is no shame for them after 15 years. Seven years is the normal time period for bearings.

    bob...

    Products and Pricing

  3. #3
    OK here is the latest.

    Same pump and motor is now not working. The motor is humming and kicks out on overload (thermal) within the pump. It cools off and will keep doing this. The shaft to the pump turns freely. The capacitor gets hot. Could it just be that the capacitor and not the motor is bad?

  4. #4
    Pump guy speedbump's Avatar
    Join Date
    Jun 2005
    Location
    Murphy, NC. USA.
    Posts
    11,785
    If the capacitor is getting hot, it's capacitatin. If it blows up or shoots oil all over the inside of the motor, then it's bad.

    I think you may have waited a little too long to make an upgrade.

    bob...

    Products and Pricing

  5. #5
    quote:Originally posted by speedbumpIf the capacitor is getting hot, it's capacitatin.
    Huh? I had to look up capacitatin on the web, and couldn't find anything to do with capacitors, Google wanted me to go to "capacitation" which I'm really sure wasn't what you ment.

    Rancher

  6. #6
    Past Newbie
    Join Date
    Dec 2006
    Location
    , Massachusetts, .
    Posts
    134
    Hey Rancher, if you don't have anything good to say or cant help the guy out who is haveing a problem, do a lot of people a favor and GET LOST!!!

    Sammy

  7. #7
    Pump guy speedbump's Avatar
    Join Date
    Jun 2005
    Location
    Murphy, NC. USA.
    Posts
    11,785
    Just so you know, there are a lot of people who come into my shop who are looking for Propellers (Impellers) Relays (Pressure Switches) Capacitators (Capacitors) and many other misspelled and mispronounced items. So I was just making a funny using the word capacitatin (Southern for Capacitating).

    And yes, I have been here long enough to be talkin that way.

    bob...

    Products and Pricing

  8. #8
    It's alright Sammy. I don't mind.

    But........

    Bob
    I bought a new motor and it was prewired for 230V which is what I needed. Direction indicated on motor was also correct. After installation, I started it up and it ran shortly and locked up. I figured I hadn't set the impeller high enough and adjusted the coupling set screws higher on the motor. Guess what? Wrong direction and the shaft unscrewed from the impeller. I can pull it all the way out! Tried to rethread without much luck. It is a two stage F&W pump and motor (3/4 hp). Any suggestions other than total removal and disassembly.

  9. #9
    Pump guy speedbump's Avatar
    Join Date
    Jun 2005
    Location
    Murphy, NC. USA.
    Posts
    11,785
    We are getting into almost uncharted waters now. I have only seen one jet pump motor in my life that ran backwards. Pump motors are designed to run clockwise looking at the shaft end. They are not reversible in direction like some other motors are. If you did in fact get one out of the box that ran backwards, it's a very rare occurance.

    Are you sure you bought the right kind of motor?

    And did you indicate that you can pull the shaft out of the pump completely? If so, you have dropped the rotating part of the seal into the abyss and you would have to totally disassemble the pump.

    The F&W with the 4" long coupling between the pump and motor should have two set screws top and bottom. The impellers have to be centered for the most part. The impellers in the older F&W's didn't screw to the shaft, they were friction fit with a brass nut at the bottom of the shaft. Do you know the model number of the pump your working on?

    bob...

    Products and Pricing

  10. #10
    The shaft does come all of the way out. It has a right handed thread. Based upon that, what direction should the motor run. Counterclockwise, when looking at the motor shaft - no? Rotation indicator on the pump says counterclockwise. Actual rotation is clockwise.

    Also, the bottom of the shaft has a stub of 1 1/4 " which has no threads. Can I grind down this end in order to allow the shaft to rethread into the impeller? I'm only thinking a quarter inch or so. And no, I don't have the model number of the pump. The casing is pretty rusty.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

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