After upsizing to a 4788 this December and starting to get to know her, my first question is a quizzical one. I'm sure there'll be more in due time....
After getting some holding tank smell inside the hallway and the salon when using the vacuflush, I started digging into things.
I found there was a holding tank vent filter installed (since been replaced) behind the access panel at the side bar.
Oddly it was installed in the vent line that comes from the vented loop for the direct overboard discharge (which bypasses the holding tank via the wye valve)
When I checked the vent line from the top of the holding tank, it went directly to the thru-hull vent
The vent was fully plugged, causing the backup of air and the smell.
I've since replaced both thru-hull vents and re-routed the vent lines so the holding tank vent goes to the filter.
And the vented loops goes direct to the thru-hull vent.
So problems have been solved....
But I'm curious - Any reason to have the holding tank filter in-line with the vented loop rather than the holding tank vent line?
Not sure if a vent filter is standard for the 4788 or if it was an after-market install.
Either way, seems to me the factory or the after-market installer tapped into the wrong vent line.
Thoughts?
After getting some holding tank smell inside the hallway and the salon when using the vacuflush, I started digging into things.
I found there was a holding tank vent filter installed (since been replaced) behind the access panel at the side bar.
Oddly it was installed in the vent line that comes from the vented loop for the direct overboard discharge (which bypasses the holding tank via the wye valve)
When I checked the vent line from the top of the holding tank, it went directly to the thru-hull vent
The vent was fully plugged, causing the backup of air and the smell.
I've since replaced both thru-hull vents and re-routed the vent lines so the holding tank vent goes to the filter.
And the vented loops goes direct to the thru-hull vent.
So problems have been solved....
But I'm curious - Any reason to have the holding tank filter in-line with the vented loop rather than the holding tank vent line?
Not sure if a vent filter is standard for the 4788 or if it was an after-market install.
Either way, seems to me the factory or the after-market installer tapped into the wrong vent line.
Thoughts?
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