Grey Tank Filling

valhalla360 wrote:
The fresh water gauges usually work OK. They are still pretty limited and we can get around 7-8 gal more into the fresh water tank after the gauge shows full (but be careful of overfilling).

Basically, they shove a metal electrode thru the tank wall at various heights and connect them to an electrode at/near the bottom of the tank. If water reaches an electrode, the water completes a circuit with the bottom electrode and a light on the gauge. With the black & gray, moist crud on the wall of the tank can create the same circuit even when the tank is empty. You can try and keep them clean but it's a losing battle.

The black & gray tanks...It's more an odd curiosity if they ever show empty. Get in the habit of emptying before storage and then try to get a feel for how many days you can go between dumping (it will vary based on your usage and how big the tanks are).

42PSI is fine...when you are present. If leaving for a longer period of time, at a minimum shut off the tap. If it's going to be days, disconnect the hose.

After waking one night on our boat many years ago (same basic water system design), hearing a hissing sound, we tracked it down and found a hose had split and was filling the bilge. Since then, we operate off the fresh water tank and pump. If there's a leak, we will hear the pump running and investigate. Also, worst case scenario, once the tank is empty, it won't pump anymore water into your RV. A leak behind a cabinet can soak the floor/wall and if left for a long period of time, can cause expensive water damage.