7095 not running Classics at 30%

[kelhuffman]

Hi Roger, thanks for digital copy. I was surprised to receive my unit last night, but I do like to have digital versions on hand. For those interested in this unit, this is worth the wait. Besides the moonlight feature, the new programming allows the 7095 to do what I bought the 7094 to do, but it couldnt. That is, runs an alternating program (Interval 1 & 2) that gives you complete flexibility to idle one side of your tank pumps while the other side pulses and visa versa, but more importantly when it goes into night mode it really is in night mode based on the two lower power settings. If you wanted to run alternate pumps like this on the 7094 you had to have the power settings inverse of each other which meant that one pump(s) was cranking during night mode. No more!

That said, Roger I have a slight problem. At 30% in Interval 2, all 4 of my Tunze Classics don't run at all. Seems like they're not getting enough juice. The 7094 at 30% kept them running. I have turned up the gain on the lower program so that in night mode they do actually spin and also do spin during pulse opeation. However the side idling at any time is just not running at all. I can't control that since its part of the program. Anything I can do to fix this issue? And, what kind of damage if any might this do to the pumps?

 

[rvitko]

For the short period of the pulse I don't think it will harm the pumps. The somewhat embarassing truth is 30% used to be more like 40% and now it really is 30%. Their were limitations in the old days that meant some pumps were slower or faster based on all the cumulative resistance of hand made components so if one set of wires, board and controller had a high resistance it might have been 30% and if it was at the lowest end it might be 50%. Now that everything is surface mount their is greater consistancy and we were able to engineer a better pump start up system that prevented the alarm from sounding and the pumps from making a clicking noise and the new controller really does do 30% so the electronic pumps can go even slower than before. The 2002 and 4002 won't spin at this very low power unfortunately, I am kind of surprised they worked for you on the lowest power on the 7094, mine didn't but this just shows that the old hand made boards were very variable.

 

[kelhuffman]

For the short period of the pulse I don't think it will harm the pumps. Bit confused by this, the pump idles on one side depending on how long an interval I set, from 1 second to 12 hours. So one side is currently idle for 2 minutes in interval 2 mode and night mode, and theoretically could be idle (and stalled I guess) for up to 3 hours if I set it that way. So is a time period of a couple minutes to a couple of hours going to damage the pumps. To play it safe does this mean I have to keep my interval in the minutes or seconds?

The somewhat embarassing truth is 30% used to be more like 40% and now it really is 30%.

While this is not good news for my particular pumps, this is another reason for those using streams to get this controller. I found that my 7094 really didn't slow the streams that much to really pulse them. It was still too much of a constant flow. So this will certainly help.

 

[rvitko]

I need to ask on this. I forgot all about the 30% idle of the new interval program. It will take me a while to get an answer most likely, you might temporarily find an alternative arrangement. For a few seconds I don't see a problem but if the fan isn't spinning and the motor is running that might be a problem. It is possible this doesn't happen in the 240V motors so maybe this wasn't anticipated. I will check.

 

[kelhuffman]

Thanks, I'll change the program to something else for now so they're constantly running.

 

[kelhuffman]

Hey Roger, I assume you haven't heard anything about my issue running classic pumps, but wanted to check just in case as I'd love to be running my new controller on interval 2. Thanks!

 

[rvitko]

Kelly I just got the answer today, check your PM's.

 

[Fliger]

Interval 2 is awesome. I get the best total circulation throughout the tank this way.

 

[kelhuffman]

Hey Roger, did you get my PM yesterday morning?