New USun XB-30ol booster not boosting

[tbone1004]

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.

 

[davehicks]

See:

I

Thread 'USUN XB30 Drive with "Shop" air?'

Jan 5, 2024

I've got a USUN XB30 for booting 2L and AL40's. I can't seem to find the CFM requirements for drive gas. Just the 8.3Bar max input pressure. This is easily done using a regular "shop" air compressor. Anyone have a setup like this? What compressor do you use and what kind of pre-filter do you have in place? Would a little pancake compressor keep up? Trying to minimize trips to the dive shop for drive gas if possible as I have an H bottle of O2 I'm filling from.

Thanks

• InWay2Deep
• Replies: 3
• Forum: Compressors, Boosters & Blending Systems

Yeah, I read that.

 

[davehicks]

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!