New USun XB-30ol booster not boosting

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

I had more luck getting it to work, but their is some hesitation if the Supply and Destination bottle pressures are equalized around 2000psi.

Adjusting the drive compressor pressure up to 100psi got it going much of the time, but the motor was running non-stop and filling was quite slow.

I agree that i probably need a higher CFM compressor. My current unit is 3CFM, and i am looking at some that offer 5.4CFM at 90psi. It seems the USun XB30 is a bit hungrier than my old Maximator.
The XB30 is roughly 3.5x as big as the Maximator, so you're going to move 3.5x as much gas per stroke, but takes 3.5x as much drive gas to do it. So if you were cycling once every say 10 seconds with the maximator, given the same drive gas supply it will only cycle every 35 ish seconds.
Anything less than a 3-phase true industrial compressor will not be able to keep up with the XB30 if you expect to cycle it at it's rated 1cycle/sec rate, they can consume something stupid like 70cfm when doing that which requires a true 20hp compressor at minimum. I ran a Haskel 30 on a California Air Tools 3cfm pump and it works fine, just takes a long time. It take easily take close to a minute to cycle once the final pressures get high. It shouldn't be stalling until you hit a stall pressure, but what you're thinking of as "hesitation" is probably just the compressor taking a long time to get it up to pressure. Pay attention to the drive gas pressure, you should be seeing it at 2000psi destination get up to about 70psi then cycle, it will go back down to almost 0 then it has to build back up. That can take quite a long time so be patient with it.
Going to 5.4cfm will help, but realistically if you had both the 3cfm and 5.4cfm running together you might get it to cycle as fast as you are used to with the Maximator. Even then though the compressors will be running continuously while boosting so make damned sure you aren't using those oilless happy home owner pancake compressor things, use the ones that are marketed as "ultra quiet" and use diaphragms or get an actual oiled compressor that is rated to run continously.
 
See:

Yeah, I read that.
 
The XB30 is roughly 3.5x as big as the Maximator, so you're going to move 3.5x as much gas per stroke, but takes 3.5x as much drive gas to do it. So if you were cycling once every say 10 seconds with the maximator, given the same drive gas supply it will only cycle every 35 ish seconds.
Anything less than a 3-phase true industrial compressor will not be able to keep up with the XB30 if you expect to cycle it at it's rated 1cycle/sec rate, they can consume something stupid like 70cfm when doing that which requires a true 20hp compressor at minimum. I ran a Haskel 30 on a California Air Tools 3cfm pump and it works fine, just takes a long time. It take easily take close to a minute to cycle once the final pressures get high. It shouldn't be stalling until you hit a stall pressure, but what you're thinking of as "hesitation" is probably just the compressor taking a long time to get it up to pressure. Pay attention to the drive gas pressure, you should be seeing it at 2000psi destination get up to about 70psi then cycle, it will go back down to almost 0 then it has to build back up. That can take quite a long time so be patient with it.
Going to 5.4cfm will help, but realistically if you had both the 3cfm and 5.4cfm running together you might get it to cycle as fast as you are used to with the Maximator. Even then though the compressors will be running continuously while boosting so make damned sure you aren't using those oilless happy home owner pancake compressor things, use the ones that are marketed as "ultra quiet" and use diaphragms or get an actual oiled compressor that is rated to run continously.
Yes, it looks like I may make a trip to Harbor Freight today for a new compressor!
 

Back
Top Bottom