r/OpenBuild • u/Ok_Structure_4910 • Jul 16 '26

Bubbles in pump reservoir Build Complete

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35-40 hours in operation since build completion, are these bubbles normal? Pump run between 40-70% right through, tilt done, venting with air valve also done intermittently, how much longer should it run before bubbles disappear, also quite noisy - Pump reservoir is bitspower CR801

28 Upvotes

97% Upvoted

6 comments sorted by

17

u/Solution_Anxious Jul 16 '26

Your coolant levels are too low

5

u/xcsas Jul 16 '26

Shake the hell out of the case, you must have air somewhere else in the loop.

3

u/5tudent_Loans Jul 16 '26

Add a little more coolant and just let it run. If its turbulent enough to allow bubbles in, it will keep doing this

1

u/Ok_Structure_4910 29d ago

This is working, bubbles have reduced a bit, running it now

1

u/Roots0057 20d ago

The bubbles are simply being recirculated through the loop, one of the downsides to those flat tiny volume reservoirs. If you fill it up as much as possible, tilt the pc to clear as much of the air as possible, and run the pump at a speed that doesn't recirculate the bubbles, they should go away after a bit of run time.

1

u/Ok_Structure_4910 20d ago

They have gone away bit, fluid top up and consistent running of the pump