sequence 1 cause damage?

[anthonyd]

Hi roger I just received a new 7095 and another 6000 to add to my current 6000 and have a million questions.
Could you at least answer two

Firstly I have the 6000's at opposite ends of a 5lx2hx1.5w. The program that I like the most is the sequence 1 with the pulse and interval times set down to a minimum and pulsing between 0% and 80%. This gives me a nice wave like motion very similar to what I have seen with a wavebox.

However I noticed that on each interval the 6000's switch completly off and on. Can this cause problems if it is doing it every second?

Secondly when the pump switches on and off there is a click - not an issue and I see others notice this, but I also hear a beep coming from one of the driver boxes on occasions. This happens when the new 6000 starts up. It sound like a cricket chirp and is coming from the driver unit 7240.27. As a matter of interest my old 6000 has the 7240.26

Thanks in advance

 

[rvitko]

The 6000 can have this problem if it is started in the lowest pulse setting, so if it starts up when the pulse is at 30% it will not have enough power to start and the alarm will momentarily be sounded. This could go away as the parts wear in and it might be a good idea to open this pump and double check that the parts are all installed properly, often the bush bearing comes loose in shipping. The Electronic pumps don't have the same problems with frequent off and on as the synchronous pumps do, the electronics largely bypass the mechanical brake system to get unidirectional rotation so thes parts don't wear out like they would on say a 6060. The only problem with frequent on and off is on every off cycle the pump gets warm inside, warmer than if it was running because their is no cooling flow and the heat from the copper core rises, this means the pump will foul up with lime a little faster than it would if left running. Just be sure to check them in a few months and see that their is not excessive build up.

 

[anthonyd]

Rodger,

Thanks for that - I did have the lower pulse set to 30% I will try setting that higher tonight and see if there is any difference. After searching throught all your threads I did see others having chirping problems and you suggested opening up the pump, assembling underwater etc - I tried all this with only partial success (ie now have it chirping a little less).

One other question- I have the streams mounted on the magnetic mounts and have a problem with one of them. It looks like the one stream will not angle more than about 5 degrees to the left. The other is fine because I am angling it to the right. The problem seems to be that the wire coming out of the stream sits between the stream and the magnetic holder preventing the stream from angling over more. Is there any way around this?

 

[rvitko]

The chirp is made by a speaker in the driver when the pump sensors find that the magnet is not rotating at the correct speed. This is usually not solved by assemblying it under water, it is usually a dirty pump or in this case the lag time in getting up to speed at such a low power input. The clicking noises and noises actually coming from movement in the pump can be resolved by doing the drive unit installation in water

As for the Stream on the magnet holder, I will try to figure this out tomorrow, I don't have one handy but I need to a water change on my aquarium and they are using one at the shop i go to and I will play with theirs

 

[anthonyd]

Thanks again rodger,

Searched the forums and see that most claim that the magnet's limit the rotation of the streams. Can't see what I could do! I rotate the stream to the position I need and I requires a small bit of force to compress the wire between the stream and the mag holder. Come back a few hours later and the stream is back to it's original position. I was hoping this would be something simple that I might be missing, like mounting something the other way around or the like.

 

[rvitko]

Give me a chance to figure it out, I think I can find a way.

 

[anthonyd]

Rodger,

I have temporarly fixed the problem. I changed the pivot connections between my new stream and the older one. The older one had it's teeth slightlyworn out and it is the one I am trying to pivot against the cable. Problem is I think with the pulsing the teeth are going to wear out on this one too.

Looking at the manual they say that the 6200 is held onto the pivot with a m8x8 screw. Is the pivot parts identical otherwise? ie If I can find an m8x8 nylon screw then maybe I can use this to tighten the mounting? The part that the pump pivots on does not seem to be tapped, but it might still hold if the screw is tight enough hey?

 

[anthonyd]

Rodger,

Another question (last one I promise).

It is about the pulse modes. I realise that the pulse mode is on always and is determined by the difference between the two power dials for each channel.

Now if the two dials are set to say 30% and 80% then the 7095 will pulse between 30 and 80 one every program. However I could swear that when I first hooked up the unit I saw it pulsing randomly between these two values. (ie 30% then 70% then 40% then 80% etc...). It is now just pulsing from 30% to 80% only and not inbetween. Was I imagining this or is it some hidden setting that is lost in the german to english translation of the manual?

Thanks again

Anthony

 

[rvitko]

No hidden setting, it may be that you had an inbetween setting or just the angle you were viewing it at.

 

[anthonyd]

So rodger, you are saying that the pulse mode only pulses between the two values only and not randomly between them.

Prehaps I was looking from the wrong angle and it looked like it was different powers. Either that or my age is catching up with me and my memory is on it's way out!

Still looking for a way to secure that damn 6000 to it's magnetic holder though - working now but dont know how long it will hold!

 

[rvitko]

Yes, pulse mode is what you set in speeds at the timing you set.

I missed your previous question,yes, the 6200 holder is tapped and an 8mm Nylon screw is used. This pump is too strong for the serrations to hold it in place, but I have never seen a 6000 or 6100 move if those serratios are firmly meshed. I am going to look at the magnet holder today for sure, yesterday we got overwhelmed with shipouts since we had some pumps come in and were trying to get caught up.

 

[anthonyd]

Rodger,

I agree that the teeth shoudl be enough to hold the 6000 and 6100 in place. I think my problem is that i have it angeld so that the pumps wire is pinched between the pump and the mag holder. This extra force seem to move it over time.

I guess it can't hurt to add a M8 nylon bolt could it?

 

[rvitko]

No, it wouldn't hurt to do it and a basic tap set is cheap enough. I found away that might work though, the center of the magnet holder is fairly springy and can bow around the cable, so you drape the cable under the magnet right behind the bracket portion, also, you could run the cable behind the pump to the other side, in this way it is actually pushing the pump in the direction you want to turn it and this could work too. I tried both ways and they seemed feasible.

 

[anthonyd]

Cheers Rodger - you're one of the good guys!