In article , Chris French
wrote:
In message , harryagain
writes

"Rusty" wrote in message
.. .
Thanks for responses. It is not lamb or other meat fats. It is a
congealed, greasy, thin, near white cement type consistency, but
greasy and sticky on the hands and arms. At its worst, the rods with
claw end break free solid, then semi-solid crap. I keep the dishwasher
topped up with salt which should soften the water. Nasty, very hard
Cambridge water. There is no feed from a washing machine into this
drain. It has a reasonable fall, but does turn a corner, maybe 45 deg
as soon 6 inch after it hits the drain pipe. I'm not the only one. A
colleague across town had similar, and so did his neighbour. The
neighbour apparantly paid DynoRod ~£250 to fix ! But mine seems worse
than theirs.

I think I'll try the hot caustic soda every 6 months.

Thanks.

The problem with modern dishwashers is that they are designed to use a
very minimum of water. Maybe not enough to flush away residues in this
case.

I wonder if a liquid dishwasher detergent would help?

I'm intrigued as to what the deposit is as I've never noticed such a
thing. But maybe that's because the drain here has the sink feeding it
as well. Maybe it's something about he local water supply?

One thing that I've found clogging drains is shaving soap.

--
From KT24 in Surrey

Using a RISC OS computer running v5.18