Results 1 to 7 of 7

Thread: My doser is not pumping It’s about one year old. It turns but only air no liquid. Is the pump head broken. What do

  1. #1
    Regular Vistor
    Join Date
    Mar 2016
    Location
    Miami
    Posts
    32

    My doser is not pumping It’s about one year old. It turns but only air no liquid. Is the pump head broken. What do

    Help


    Sent from my iPad using Tapatalk

  2. #2
    Frequent Visitor
    Join Date
    Oct 2015
    Location
    CHICAGO
    Posts
    87
    If it's spinning but, nothing, your assumption is likely correct, the heads are just a tube with rollers running over them every time the pump turns on. IMHO they have lasted longer than I expect, but I get about a year on 80,000ml / day, which is better than I have read. They are about $30, usually in stock at BRS.

  3. #3
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    It's possible they need replacement. Have you tried reseating the tubing and/or trying a different piece of tubing in case yours cracked somewhere?

    Sent from my SM-G965U using Tapatalk

  4. #4
    Regular Vistor
    Join Date
    Mar 2016
    Location
    Miami
    Posts
    32

    DDR

    So my doser is still not working right after replacing pump heads. A waste of money. But I did test the fittings on the ddr and it seems when I dip the tube in container directly, it draws a siphon. So how do I fix the fittings. Anyone?


    Sent from my iPad using Tapatalk

  5. #5
    Regular Vistor
    Join Date
    Mar 2016
    Location
    Miami
    Posts
    32
    I replaced the pumps but still a problem. When I dip the tube in the container it draws a siphon. It seems the fittings are not tight enough. Yes I recut the tube and pushed down till it snapped .


    Sent from my iPad using Tapatalk

  6. #6
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Disassemble it and put it back together making sure the hardware and soft tubing get pressed in all the way. Pressing until it snaps is not far enough.

    Sent from my SM-G965U using Tapatalk

  7. #7
    Master Control Freak RussM's Avatar
    Join Date
    Dec 2012
    Location
    California - US Pacific
    Posts
    22,464

    My doser is not pumping It’s about one year old. It turns but only air no liquid. Is the pump head broken. What do

    Please do not start a new thread when you already have an active existing thread about the same issue. I have merged the second thread you started with the original.

    If you are positive the flexible tubing is fully seated inside the push-fit fitting, there are two likely possibilities - the seal between the rigid tube and the push-fit fitting is not intact or there is something else wrong inside the push-fit fitting, perhaps the tiny O-ring is dislodged.

    You can do a test - carefully remove the DDR tube - it unscrews. Blow through the connected flexible tubing to see if you can determine if there’s leakage around the rigid tube/push-fit joint or if there’s leakage within the push-fit back around the flex tubing.


    Contact Neptune tech support about getting replacement DDR tube(s) if need be.
    Please do not send me PMs with technical questions or requesting assistance - use the forums for Apex help. PM me ONLY if the matter is of a private or personal nature. Thanks.

Similar Threads

  1. DOS AWC head suddenly changed direction after 1 year
    By Albertan22 in forum DŌS & DDR – Dosing and Fluid Metering System
    Replies: 4
    Last Post: 06-08-2021, 14:40
  2. Rerun pump not pumping after water change.. help
    By Scott.h in forum COR-15 & COR-20 Pumps
    Replies: 3
    Last Post: 07-08-2019, 03:07
  3. Help! left pump not pumping
    By jaymack750 in forum DŌS & DDR – Dosing and Fluid Metering System
    Replies: 4
    Last Post: 12-09-2016, 23:22
  4. Solved: broken dos head
    By simpletty| in forum DŌS & DDR – Dosing and Fluid Metering System
    Replies: 20
    Last Post: 11-24-2015, 12:13

Bookmarks

Bookmarks

Posting Permissions

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