water pump advice

Discussion in 'Motorhome Chat' started by con-tiki, May 12, 2012.

  1. con-tiki

    con-tiki Funster

    Joined:
    Oct 18, 2009
    Messages:
    475
    Likes Received:
    189
    Location:
    Leeds, West Yorkshire
    The water pump in my hymer is not working (in-tank pump). Looks like the original pump. Instead of messing about I am going to replace it with an external pump. Any recommendations for a replacement pump would be greatly appreciated.

    Shirl
     
  2. mike mcglynn

    mike mcglynn Funster Life Member

    Joined:
    Jan 6, 2008
    Messages:
    1,398
    Likes Received:
    4,764
    Location:
    St. Helens MERSEYSIDE
    replacement pump

    Hi, Shirl shur flo pump about £ 50 easy fix can run dry without damage try e bay..:thumb: 20 psi should be good
     
  3. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,934
    Likes Received:
    25,574
    Location:
    .
    Word of caution..

    The submersible pump works from the micro switch in the tap and isn't designed for the load of a Shurflo pump.. it may work initially, but will eventually burn out the tap switch(s) .. and may also blow the fuse.

    The correct way to do it is to install a 12v - 10A relay in place of the submersible pump (operated by the tap micro switch) with a new 12v x 10A fused supply from the 12v distribution panel using minimum 1.5 sq mm cable.
     
    Last edited: May 12, 2012
  4. Pikey Pete

    Pikey Pete Read Only Funster

    Joined:
    May 25, 2008
    Messages:
    1,532
    Likes Received:
    1,141
    Location:
    o
    I was thinking about doing something similar and I've read this piece of advice and it doesn't make any sense to me. Why would you need to have the tap switches connected if you are switching to a constant pressure external pump?
    The problem I can foresee is that the current plumbing may not be up to a constant pressure system and could leak.

    Pete:Cool:
     
  5. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,475
    Likes Received:
    16,957
    Location:
    YO11 2BD
    forget the tap micro-switches....just another link in the chain to go wrong.

    the Fiamma and Sure-flo pumps have a built in pressure switch so just wire, via an on/off isolation switch, to the battery (with a 10amp fuse) or directly to the fuse panel.
     
  6. Johns_Cross_Motorhomes

    Johns_Cross_Motorhomes Trader - Motorhome & Accessory Sales

    Joined:
    Jan 5, 2008
    Messages:
    9,248
    Likes Received:
    5,199
    Location:
    East Sussex 01-580-881288
  7. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,934
    Likes Received:
    25,574
    Location:
    .
    Yes indeed John .. that is better and as you say less to go wrong .. :thumb:

    I was cautioning against just whacking in a Surflo in place of the submersible..
     
  8. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,475
    Likes Received:
    16,957
    Location:
    YO11 2BD
    agreed Jim, not a good idea...as you say, the wire gauge wont be up to the new pumps amperage.
     
  9. con-tiki

    con-tiki Funster

    Joined:
    Oct 18, 2009
    Messages:
    475
    Likes Received:
    189
    Location:
    Leeds, West Yorkshire
    thanks for the info...My sister's hymer has a shurflo pump with a separate on/off switch....

    Shirl
     
Loading...

Share This Page