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Old 02-08-2019, 01:30 PM
TimPa TimPa is offline
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i've had the hurricane running several times, all well there. made all connections and checked have a full 9.5 in Hg with zone valves closed.

after surfacing mdf plenum for first time, and placing the new spoilboard on top, opened the zone valves for "hold down" for the 1st time. valves 1 & 3 went well, but valves 2 & 4 have an audible air leak from underneath. tracked them down to where the pipes enter the table from underneath. looks like a clear sealant around the joint, definitely is where the sound is coming from.

what is the fix? more sealant (type?), disassemble and reassemble where adapter enters table? any thoughts are greatly appreciated.

will place a call into CAMaster also.
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Old 02-08-2019, 02:05 PM
carasel carasel is offline
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I had a leak similar to yours. I put silicone caulk on it. It sealed the leak just fine.
Make sure you let it dry before turning the vac back on.
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Old 02-08-2019, 02:24 PM
TimPa TimPa is offline
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thanks Addie, did you apply it from above or below?
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Old 02-08-2019, 02:33 PM
rcrawford rcrawford is offline
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Definitely apply it from below. You want the vacuum to pull it tighter into the joint once it has set.
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Old 02-08-2019, 05:04 PM
The real JP The real JP is offline
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Maybe put some caulk on, turn it on for a few seconds then reapply the caulk and let it all dry overnight.
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  #6  
Old 02-21-2019, 08:29 AM
TimPa TimPa is offline
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I found that if I turn off all unnecessary equipment and just run the vacuum pump (in another room), I had leaks on all four zones, where they come through the plenum board. applied high quality caulk/sealant until I could here the leak disappear, then quickly shut off the valve then applied a little extra.

after drying all 4 still leak, but less. guess I have to climb back under there. a design which I believe could be improved...

I think that the vacuum is too precious to be losing any to leaks. maybe I am overthinking it??
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Old 02-21-2019, 08:52 AM
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Gary Campbell Gary Campbell is offline
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"I think that the vacuum is too precious to be losing any to leaks. maybe I am overthinking it?? "

No. Vacuum is similar to many of the good things in life. You never seem to have enough, so there is no sense in giving some away.
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Old 02-21-2019, 09:10 AM
guitarwes guitarwes is offline
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I had leaks in 2 of the 5 ports under the table also. I caulked the mess out of them and let it set overnight. Still have one smaller leak in 1 port that I'm going to caulk again. I'll keep trying until it's gone. It looks like an upside down volcano under there right now.
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