automatic water change

I can't say much, I still haven't shot the video of mine running uber slow yet lol... I have however caught 2 polyclad flatworms tonight already... I wish all pests were this easy to capture and get rid of.. hairline slits in a cup with a clam from the grocery store for the win
 
I was looking at the AMETEK pump again and it looks like the pumps are modular like the Masterflex are, meaning that you can remove a pump if you only want to use 2 and then have the 3rd as a spare.
 
Yep that is what it looked like to me as well. It appears to use the same or similar heads as the pumps you've got. I'll let you know when they arrive, which doesn't look like it will be today :(
 
??tomorrow?? tracking now says Wednesday. or Thursday........I hate waiting! Oh well I have undercabinet lighting to build that will distract me in the meantime, LOL!
 
I cam e across a 24v 500ma PS that I had from an old Roomba vacuum that hasn't worked in years.

Plugged my pump motor into it and it took off like a bat out of h_ll.
The problem is that it only ran for about 20 sec and then stopped.

I thought I damaged the motor, but I plugged the 12v 1amp and it was fine.

I'm still having a bit of a problem having the motor start on it's own if it sits to long, so it looks like when I set this up I will probably be doing several small changes through out the day.
 
LOL. You gonna have the trigger for the drill taped down or are you gonna get one that has a lock on the trigger?
 
Lol in gonna bypass the trigger so the apex time can run it and then leave the trigger hot so I can do a manual change. If that makes sense
 
Tickle said:
Lol in gonna bypass the trigger so the apex time can run it and then leave the trigger hot so I can do a manual change. If that makes sense
Click to expand...

Yes it makes sense.
I'm going to keep that in the back of my mind. I'm still not 100% set on my setup. Like I said earlier if I do not trigger it for a day or so I have to jump start it to get it to run.

My options are...
1) Do small water changes through out the day.
2) See how the Ameteck pump/motors work and take one of the pumps off.
3) Do your set up.
 
another idea... why don't you cut all the crap off the back of a motor and just run the + and -, none of that cross diode and the mov's to the casing :-P
 
I can give that a try.

Yeah I think there are 2 capacitor (one on each terminal) and there is a wire running from one terminal to the other, (not sure what that's for).

IMAG0151_zpsoi0pjtnr.jpg
 
I never did cut it all apart and test it, but I believe that wire going across the terminals is a diode, or an MOV for voltage spikes. That's why if you're having issues, I think you should snip the center wire out first and test it, and then the 2 resistors going to the housing.

I really have no basis on this other then if a diode is bad it can leak voltage across it which would cut down on your available power to the motor. Also if it was a diode rated at 12v and you hit it with 24v it could easily overcome it's blocking characteristics.

Have at it, get your snips out :-P
 
On the other end of that the diodes installed on the single head pumps I have do something that allows them to turn under only 5volts but if the diode is removed it takes 12volts to turn them (plus they will run backwards if you reverse the polarity without a diode :) )

I'm no electronics expert so I can't explain what the diode does that makes the pump run at 5v but it works so..... (it's an fairchild 1N4001 also has AH10 but I don't know what that indicates).......FWIW
 
dread240 said:
I never did cut it all apart and test it, but I believe that wire going across the terminals is a diode, or an MOV for voltage spikes.
Click to expand...

It would have to be otherwise the terminals would be shorted out, :lolspin:

I guess it could be a capacitor too, but that wouldn't stop the motor turning the wrong way.
 
All 4 of my motors do the same thing. Ive done all of the above noted. And the all exhibit the sam symptoms. I have a cheap $10 corded drill that ill try this with. Haven't had any time. It may look rigged but all I care about at the end of the day is being lazy and not changing water with a pail :)
 
I cut all the jumpers and capacitors off last night and tried it again and it still didn't crank on it's own, but while it was running I did pull on the tubing a little bit to stretch it out and that seems to have made it spin faster, so I'm thinking that it may have loosened things up a bit.

I'll check it when I get home tonight and see if it kicks over on it's own now.
 
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