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perm-a-green sprayer problem

Discussion in 'Pesticide & Herbicide Application' started by ant, May 18, 2002.

  1. ant

    ant LawnSite Silver Member
    Posts: 2,442

    while spraying a lawn one nozzle quit
    spraying. i cleaned the nozzles and the
    samething.contacted perm a green thay
    said it was the pump.changed the pump
    same thing ...any of you guys had
    problems like this?
  2. Pacific Nursery

    Pacific Nursery LawnSite Member
    Posts: 114

    At the beginning of this year I had a similar prob.
    Can you take off all the nozzels from the defective sprayer and will it pump out liquid? If so change nozzels from a working sprayer to see if it works properly now. One of my nozzels clogged up even though I could blow through it. I just changed nozzels and now it works fine.
    Hope this helps.
  3. ant

    ant LawnSite Silver Member
    Posts: 2,442

    greg:thanks for your reply... both nozzles work,but not at the same time.with both of them on one sprays fine and one just drips out.if i valve one off then the one that drips will spray fine.and vice-versa.

    it seems like the pump is not pumping to capacity,but it is a new pump and the old one did the same.
  4. tremor

    tremor LawnSite Bronze Member
    Posts: 1,476


    I will ask around Monday. We sell these things & some of our service guys are pretty sharp.

    For now, I'd put my money on a pinched or collapsing hose. Try following all the lines from the tank to the pump & especially the pump to the nozzle bodies. A partly closed line that feeds the slow nozzle might be opened by the incoming pressure only when the opposing nozzle is shut off. Look for things like hard angles & constricting wire ties. As hoses age, they may begin to constrict in areas that were marginally acceptable when the unit was new.

    If that fails, pull the hose that feeds the suspect nozzle. Clean it in warm soapy water. Then look through it in good light. Is it starting to degrade?

  5. tremor

    tremor LawnSite Bronze Member
    Posts: 1,476


    Do the same thing on the tank to pump line. Check all the strainers too. Usually when new pumps act old, it's a partial blockage on the intake side. If one line is found bad, change them all. If this unit is more than 2 years old, I'd change all the hoses anyway. Hoses get brittle or soft (depends on composition) with age & exposure to different chemicals, sunlight, temperature extremes, etc.

  6. ant

    ant LawnSite Silver Member
    Posts: 2,442

    THANKS STEVE. for your reply...
    i will tip the mechine and look into it.
  7. superfert

    superfert LawnSite Member
    Posts: 25

    You might want to check out the belt to the generator on the unit. If loose you will find that you might not be running the pump at max output. We had a unit that came in to the shop where it lost all pumping ability and found it to be the belt on the generator not even tight. I little different then your issue but might be worth a look at.
  8. HBFOXJr

    HBFOXJr LawnSite Bronze Member
    Posts: 1,712

    I had one that had a piece of dir so samll in the nozzle that I missed it until about the 4th time. Poked a tiny piece of wire thru and that was it. It can look right and not be right if yopu don 't check very closely.

    Pull both screens and nozzles, rev it up in nuetral and throw thw switch to see of it runs freely from both openings.
  9. Pacific Nursery

    Pacific Nursery LawnSite Member
    Posts: 114

    That's what I'd do first. Pull screens and nozzels and see if you get free flow from both.
    By the way is this prob only with top or bottom or both nozzels.
  10. grassman69

    grassman69 LawnSite Member
    Posts: 7

    loosen/adjust the black cap on top of diaphram...
    i have had exactly this problem w/ my machines also
    and it may need some adjust on the black cap...
    usually too tight. i suggest taking all nozzles, screens,
    caps, and gaskets out, wash in warm soapy water
    and check generator output... i have also found that switching
    the pump may be the problem... i know u already did so you've
    solved sum of the trouble shooting problem... my bet is the diaphram caps are on too tight on 1 or both of the nozzle bodies
    post your fix solution as im interested to know how it came out.

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