LP pressure

[Shiny16]

The fridge in my 16 sport works great on AC. On propane not so much. I’ve cleaned everything, have a good blue flame but it’s still lacking. I think the only thing left is the LP pressure. I’ve read a bunch about making a monometer but haven’t found good info on how to actual use it.
I have an extra short hose I have no need for for the LP port. Could I use that to hook up to a home made monometer? What should be running when you test?

Thanks

[ROBERT CROSS]

Are you sure the regulator is adjustable?

TIPS

Our fridge wasn't getting cold enough on our last outing,
our 15yr old reg wasn't up to the demand. Replaced with a Marshall Hi flow from Amazon

Make sure the ambient/climate switch is off. 👍

Bob
🇺🇸

[RivetED]

Have you tried exhausting the heat from the top vent in a more efficient manner?

[Shiny16]

Originally Posted by ROBERT CROSS

Are you sure the regulator is adjustable?

TIPS

Our fridge wasn't getting cold enough on our last outing,
our 15yr old reg wasn't up to the demand. Replaced with a Marshall Hi flow from Amazon

Make sure the ambient/climate switch is off. 👍

Bob
🇺🇸

How did you know it was the regulator?

[Shiny16]

Originally Posted by RivetED

Have you tried exhausting the heat from the top vent in a more efficient manner?

I have two fans that I believe do the job correctly. It will hold 32 degrees on a 90 degree humid day while on a/c. Switch to LP and it will be in the 50s in shot order.
The only thing that I know of that has not been ruled out would be the LP pressure.

[ROBERT CROSS]

Originally Posted by Shiny16

How did you know it was the regulator?

At the time I didn't...process of elimination, the stove burner flame was also very erratic, yellow tint. 😂

It turns out that not only was the flow low but the regulator was not switching over properly. When I removed the MT tank and pointed the switch toward the full tank the disconnected line continued to flow gas.👎

Bob
🇺🇸

[blkmagikca]

I added an LP manometer to a tee to one of the connections to the refrigerator. See https://www.amazon.com/Cole-Parmer-P...s=lp+manometer

[Shiny16]

Originally Posted by ROBERT CROSS

At the time I didn't...process of elimination, the stove burner flame was also very erratic, yellow tint. 😂

It turns out that not only was the flow low but the regulator was not switching over properly. When I removed the MT tank and pointed the switch toward the full tank the disconnected line continued to flow gas.👎

Bob
🇺🇸

I’m camping with my son now. The first time this season with no hookups. The propane generator will not run from the LP port so I hooked it direct to a bottle. The hot water will work but the flames on the burners are really low. The fridge gets a blue flame but wouldn’t cool overnight. I’m guessing it’s the regulator. I ordered a new one and will swap it out next week. We will see.

[Lumatic]

You can make a manometer from junk you probably have in your garage. It is simply a U shaped tube mounted on a board with marks every inch. The U should be about 18 inches. Fill it half full of water. Connected to a pressurized gas line the pressurized side will go down and the open side go up. The difference in levels is called "water column" pressure for obvious reasons. Normal pressure is about 11 inches if I remember correctly. I'm sure if you google manometer you can find some photos.

[Shiny16]

Thanks for that. I found plenty on how to make one. It’s a pretty easy concept. I’m just not quite sure how to actually connect it to the LP system.

[rmkrum]

Add a TEE fitting where your propane hose from the regulator joins to the copper line under the A-frame streetside, if it’s plumbed like mine.

I can just adapt into a male quick connection fitting now that i added a port for the generator.
Heck, I may just put a permanent manometer gauge in just for overkill...

[Shiny16]

So I made a monometer and attached it to the LP port. It showed about 9 inches. I could not adjust the regulator enough to get 11 inches so I replaced it.i set the new regulator to 11 inches with every propane appliance turned on.
While working the temp went to 49f in the fridge. I turned it back on and it instantly started to cool. In 3 hours it was 30f in the refrigerator. It was only in the low 70s outside so we will have to wait to see what it does when the temps are in the 90s but my hopes are high. I have never seen it cool so fast.

[carl2591]

sounds like you found the issue.. low gas flow and pressure. nice to know.

Originally Posted by Shiny16

So I made a monometer and attached it to the LP port. It showed about 9 inches. I could not adjust the regulator enough to get 11 inches so I replaced it.i set the new regulator to 11 inches with every propane appliance turned on.
While working the temp went to 49f in the fridge. I turned it back on and it instantly started to cool. In 3 hours it was 30f in the refrigerator. It was only in the low 70s outside so we will have to wait to see what it does when the temps are in the 90s but my hopes are high. I have never seen it cool so fast.