Scubapro freeflow out of water

[henry-root]

I recently did a pool dive to check out my newly serviced regs which went fine, but with the air still on out of the water I depressed the purge button to ensure that it closed automatically AND IT DID NOT! I sought help and was assured that this was normal and in the water the purge valve would close normally. Unfortunately I did not check this.

These are the facts:
1. I notived the air presure was far higher than normal - over 300 psi.
2. Both regulators suffered with the same problem.
3. Closing the ventura valve to reduce the air supply to the regulator prevented this happening.

As I am about to go to the Red Sea for a week any comments would be welcome.

Many thanks. :blinking:

 

[halocline]

It's pretty common; try it again and when the purge stays on, put your thumb over the mouthpiece and see if that stops it. The venturi vane does not reduce air supply to the reg, it just breaks up the venturi effect by which airflow in the vicinity of the mouthpiece tends to reduce internal pressure in the 2nd stage, encouraging the reg to continue flowing. You should keep that vane adjusted on "min" when you're out the water, and to "max" when you're diving the reg. On the octo, just keep it on "min." If you forget to turn the knob to "max" when diving it's likely you'll never notice.

It might not be a bad idea to "cycle" the reg many times before leaving. You can do it by simply repeated short purges or taking quick breaths on the pressurized reg. Doing this will break in the soft seat a little, and sometimes regs need to be re-adjusted after this has happened. It's not uncommon for a reg to leave the shop adjusted fine, then start to freeflow a little after the seat has set in. It's a simple matter then for the tech to re adjust it a little to stop the flow. But I bet you'll want to make sure it's done before you leave on your dive trip.

 

[Web Monkey]

I recently did a pool dive to check out my newly serviced regs which went fine, but with the air still on out of the water I depressed the purge button to ensure that it closed automatically AND IT DID NOT! I sought help and was assured that this was normal and in the water the purge valve would close normally. Unfortunately I did not check this.

These are the facts:
1. I notived the air presure was far higher than normal - over 300 psi.
2. Both regulators suffered with the same problem.
3. Closing the ventura valve to reduce the air supply to the regulator prevented this happening.

What air pressure was 300 PSI? Did you attach an IP pressure gauge to the first stage?

It's probably functioning normally and is tuned for easy breathing, however if you're unhappy, you should take it back to the dealer for adjustment/repair. here really isn't anything anybody can do for you on the internet.

Terry

 

[henry-root]

Hi Terry

Think I am getting my lines crossed somewhere as my regs will not take 300 bar - DIN.:blinking: I had not used these regs for a while.

Anyway, will be going back to the dive centre to check this out but it seems that setting the venturi switch to min at the surface is the answer. Shame was that I did not test the purge in the water.

Many thanks for your response.

 

[netwayne]

I've had a similiar experience on my SP S600 and it was mentioned to me to make sure the venturi adjustment was set to "pre-dive" when you do that out of water purge test. It seems to work for me and I pretty much leave that setting alone even during the dives.