Hi Adrian
Great troubleshooting. Because you identified the HSO is high, I can then assume the problem comes after the filler and before the seamer. Curious if you have an undercover gasser before the lid gets added. Can you try turning this off and see if TPO improves?
My hypothesis is the angle at which the gas is blowing onto the foam is creating a venturi effect that draws oxygen from the air into the lower pressure created by the moving gas. Turning off the undercover gas should improve the HSO results, not to target levels but better than what you are seeing. If this simple test works, then adjust the angle of your undercover gas stream.
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Matt Garcia
Anton Paar USA
Maryville IL
(618) 407-9382
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Original Message:
Sent: 07-25-2022 02:49
From: Adrian Graeber
Subject: DO Issues on Angelus CB100 Filler
Hoping to get some suggestions on how to improve TPO levels that we're getting in can from an Angelus CB100 12 head filler.
We're regularly recording DO levels of approximately 2pbb in bright tank, then about 6ppb at the manifold just before beer flows into the individual fill heads. The fills are the correct volume plus a little extra and the foam/fobbing looks really nice with a nice convex, tightly-packed head (see attached photo and video of filling). If we gently remove a can post the seamer and gently invert it in an attempt to test the DO of the liquid (not TPO so no shaking) we get approximately 25ppb. However, if we vigorously shake the cans for a couple of minutes (normal testing process) we consistently get readings of 150ppb to 300ppb. This is clearly not acceptable and we've been working extensively on-site with technicians trying to troubleshoot this without resolution. Every now and again we'll get a good reading of below 50ppb but it doesn't seem consistent or isolated to a problematic fill head.
The CO2 purging is working and we've attached our CBox to the supply to confirm that the supply is pure CO2 (as expected).
Hopefully someone with experience using this specific filler can provide some advice because we're out of ideas and really struggling.
We were previously using a CODI 6 head counter pressure filler that always produced excellent TPO readings so we're a bit confused why a more expensive and supposedly better piece of equipment is producing worse results.
Any and all advice would be greatly appreciated!
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Adrian Graeber
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