Whale external water pump

Rufs
Rufs Club Member Posts: 4,072 ✭✭✭✭✭
1000 Comments
edited May 2023 in Caravans #1

i am the proud owner of 3, yes 3 Whale external water pumps, 2 work ok, 1 will not switch off. I know that there is a little grub screw in a magic box under the front bunk that controls the length of time a pump runs on after you have switched the tap off, but why does it work for 2 but not for 3, is there something in the actual external pump that also has control of this switching off function.?

p.s. i am loath to moved the grub screw in case it screws up the 2 pumps that are working  

 

Comments

  • Arch
    Arch Forum Participant Posts: 347
    edited May 2023 #2

    I think you'll find the grub screw adjusts a pressure switch so when you turn a tap on the water pressure in the system drops the pump starts when the tap is turned off the pressure builds until it reaches the switch setting then turns of, I would suspect the pump that doesn't turn off is leaking so never reaches the switch off pressure.

  • Rufs
    Rufs Club Member Posts: 4,072 ✭✭✭✭✭
    1000 Comments
    edited May 2023 #3

    thanks looks like it is scheduled for the bin

  • BrianMatthew
    BrianMatthew Forum Participant Posts: 1
    edited June 2023 #4

    I always carry a spare pump - sudden failure is not uncommon and always seems to happen on a Sunday!

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