Problem with Washing Machine Waste


Postby max101 » Tue May 25, 2010 6:59 pm

Hi,

Since we moved into our newish house we have a problem with the washing machine waste slightly overflowing the standpipe.

The waste comes out of the back of the machine then loops up and over (with a U shaped holder) and into a standpipe (approx. 1m high, 50mm diameter). There doesn't appear to be any kind of a blockage and it only leaks a small amount of water each time (but enough to be messy/annoying).

Do you think the w/m could be pumping the water out too fast for the drain?

Would it help if we changed the standpipe to a bigger diameter?

Any ideas would be most gratefully received! :)

Thanks for your help,

Max
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Postby plumbbob » Wed May 26, 2010 1:09 pm

The standpipe should cope with the output of the washing machine so as it isn't it would suggest something is wrong. The pipe diameter should be 40mm (1.5") and a larger size is not available.

You don't describe the layout so it is a bit difficult to offer advice, but the overflow is most likely caused by a blockage, insufficient fall, too long a run or uneven pipe levels.
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Postby htg engineer » Wed May 26, 2010 6:12 pm

How tall is the standpipe in relation to the washing machine ?

try extending the pipe.


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Postby plumbbob » Wed May 26, 2010 7:04 pm

htg engineer wrote:How tall is the standpipe in relation to the washing machine ?
htg


That's a point, can you hear the standpipe filling up or is it just splashing over?
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Postby max101 » Wed May 26, 2010 7:34 pm

Hi,

The standpipe is approx. 700mm from the floor to the top.

The washing machine waste has to come through the wall and into a cupboard adjacent. It looks like the standpipe connects directly into the Svp through a floor socket ( hopefully if i have pasted this correctly you will se a photo!!).

Image


Thanks for your help,

Max
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Joined: Tue May 25, 2010 6:50 pm


Postby max101 » Thu May 27, 2010 4:32 pm

It's just splashing over. It never does it whilst I'm watching so I think its just occasionally during the wash cycle.
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