Eheim 1250 Pump leak...

PreOmegaZero

Diamond Member
Mar 12, 2002
4,855
21
91
Put together my WC system again (was awaiting a new board) and I noticed water emptying the fill tube at a rate not associated with evaporation (Closed system).
Tracked it down to be the water pump leaking from somewhere I cannot see. I have a small towel under the pump in the case for preventing humming and just incase of leaks and it's alsways damp/wet. I took the pump apart, check for any cracks or anything and found nothing. It's not coming from the output/input lines as they are very tight and have teflon tape sealing them.
I tested the pump away from the PC for about 15 minutes and no leaks occured, but as soon as I put it in the case, it acts up.

Should I check to see again if the O-ring inside is sealing properly?
The leak isn't HUGE, but very annoying now that summer heat already evaporates the system a bit.

Any recommendation would be appreciated.
 

HiTek21

Diamond Member
Jul 4, 2002
4,391
1
0
probably the O ring is worn out or is mis-shaped not making a very good seal.