Sewer smell when using exhaust fans
Have 2014 Open Range Journeyer. When we use the exhaust fans there is a terrible sewer smell coming from kitchen drains and the cabinet underneath. Black line is closed, grey line is open. We use a g...
Forum Discussion
Ya'll make my head swim.. do this, do that, no, not that.. THIS.
A P-Trap is in your house for just that same reason and it works.
Now, for a Newb TT camper Why wouldn't you want both black and grey water valves to be be closed? That seems like the best way to keep from siphoning fumes and from sucking up stench. It's a simple air flow issue, exhaust fan creates a negative air pressure in the cabin. Air comes from the open grey tank into the cabin to make up for it. That is why the suggestions for cracking the window help.
Here is a simple experiment to help at home in the "off season".
1: Put a quarter in the palm of your hand.
2: Now put your vacuum cleaner hose over the quarter sealing tight against your palm
3: Next turn on the vacuum cleaner. Hold the hose tight against your palm...
4: Turn off the vacuum cleaner
5: Once the vacuum dies down, remove the hose from your palm
Where's the quarter?
In your palm! Since there no air flow to draw the quarter it stays put! If your had lost the seal against your palm the quarter would have been sucked into the vacuum cleaner.
If you close the grey and black water valves there is no flow and the negative air pressure caused by the exhaust fan would be supplied from elsewhere. Your TT is NOT air tight, so it will get the replacement air from somewhere, but opening a window wouldn't hurt.
A P-Trap is in your house for just that same reason and it works.
Now, for a Newb TT camper Why wouldn't you want both black and grey water valves to be be closed? That seems like the best way to keep from siphoning fumes and from sucking up stench. It's a simple air flow issue, exhaust fan creates a negative air pressure in the cabin. Air comes from the open grey tank into the cabin to make up for it. That is why the suggestions for cracking the window help.
Here is a simple experiment to help at home in the "off season".
1: Put a quarter in the palm of your hand.
2: Now put your vacuum cleaner hose over the quarter sealing tight against your palm
3: Next turn on the vacuum cleaner. Hold the hose tight against your palm...
4: Turn off the vacuum cleaner
5: Once the vacuum dies down, remove the hose from your palm
Where's the quarter?
In your palm! Since there no air flow to draw the quarter it stays put! If your had lost the seal against your palm the quarter would have been sucked into the vacuum cleaner.
If you close the grey and black water valves there is no flow and the negative air pressure caused by the exhaust fan would be supplied from elsewhere. Your TT is NOT air tight, so it will get the replacement air from somewhere, but opening a window wouldn't hurt.
