How do I remove a stuck expansion valve?
- jknotzke
- Posts: 101
- Joined: 13 years ago
Hi
I have a Cimbali JR S1. In this photo (not my machine) https://www.coffeegeek.com/images/37811 you can see the expansion valve circled.
To the right (or the left of the gauge) there is a fitting that is stuck. I cannot seem to unscrew it. The one above the valve came out OK but the one to the right, no luck. The problem is this entire affair "floats". I don't have much leverage and I am fearful of bending the pipes..
This OPV works fine btw.. The problem is I can't turn the screw to adjust the pressure. I'd like to descale it. What are my options ?
Thanks !
J
I have a Cimbali JR S1. In this photo (not my machine) https://www.coffeegeek.com/images/37811 you can see the expansion valve circled.
To the right (or the left of the gauge) there is a fitting that is stuck. I cannot seem to unscrew it. The one above the valve came out OK but the one to the right, no luck. The problem is this entire affair "floats". I don't have much leverage and I am fearful of bending the pipes..
This OPV works fine btw.. The problem is I can't turn the screw to adjust the pressure. I'd like to descale it. What are my options ?
Thanks !
J
- HB
- Admin
- Posts: 21981
- Joined: 19 years ago
Get two wrenches, one for turning, the other acting as a counter-hold:jknotzke wrote:I don't have much leverage and I am fearful of bending the pipes.
From Boiler safety valve is hissing at 0.5 bar, bad spring?
Dan Kehn
- jknotzke (original poster)
- Posts: 101
- Joined: 13 years ago
Ok, I managed to get it off..
Thanks Dan.
There is a screw on that OPV that allows you to set the pressure. Once I got it off, I soaked it in citric acid for 3 hours.. It's much cleaner and scale is gone. But do you think I can get that screw to turn to adjust the pressure ? Noooo.
It also squeals like a biatch in heat when backflushing.. A sure sign the rubber inside it needs replacing.. but I can't seem to get that screw off.
So, screw it.. I ordered another. I'll have to make a pressure gauge too now it appears.
Thanks again
J
Thanks Dan.
There is a screw on that OPV that allows you to set the pressure. Once I got it off, I soaked it in citric acid for 3 hours.. It's much cleaner and scale is gone. But do you think I can get that screw to turn to adjust the pressure ? Noooo.
It also squeals like a biatch in heat when backflushing.. A sure sign the rubber inside it needs replacing.. but I can't seem to get that screw off.
So, screw it.. I ordered another. I'll have to make a pressure gauge too now it appears.
Thanks again
J