this is me
Active member
is the 7520-40 brushless? Couldn't this info on their website.
Official: Masterflex Calcium Reactor Setup Thread
- Thread starter tkeracer619
- Start date
swk
New member
I would try to Google the model number. If that doesn't give you an answer, just call the Cole parmer customer service number, or email them. They're nothing but incredibly helpful and timely with their responses.
slief
RC Sponsor
That model is not brushless. The brushless ones usually say brushless or maintenance free in the description. They are also listed as twice that price in their catalog,
Here is the manual for that model. It also shows the brushes in the exploded diagrams.
http://www.masterflex.com/Assets/manual_pdfs/A-1299-0860.pdf
this is me
Active member
Can you please send me a link or model of one with the brushless? I don't want the wife to complaint about the noise.
slief
RC Sponsor
They are listed in this thead. The most commonly available units are model numbers 7523-60, 7550-30, 77301-20, and 77301-30.
That said, the 7523-60 is the brushless version of the 600 rpm pump you were looking at. I run a 7523-80 but that is a newer and more expensive 600 rpm brushless model that is silent. Then again, most of the brushless models are pretty much silent.
Reefstarter2
New member
I am waiting on my "new to me " CP peri . it is the 7554-90 model with a 7021-20 head running LS pharm med 16 . can't wait to get this thing running . from all the threads I have read I will be pulling fluid through the reactor which is a Geo 612 part of why I made this choice is on more than one occassion my reactor has leaked from the O-ring . I got new ones and still the same problem . so that leads me to believe I am building to much pressure in the chamber . of course I found this thread after buying it lol. great thread
this is me
Active member
Thanks, I was looking at the 7523-60 at first but when I saw the LCD and the buttons, I thought it would be much less reliable than the old analog dial. Will look into the digital instead for the brushless motor.
slief
RC Sponsor
The digital is much nicer because you can set the flow down to the fraction of a milliliter or my RPM instead of guessing the flow by counting RPM's as you would have to with a knob. FWIW, these pumps are very reliable and built to last.
pump choices
pump choices
i am able to get my hands on either a 7522-20 or 7523-80 drive unit, also they both have the 77200-62 head on them, this uses the 15.24.35.36, tubing, would either one of these work for a ca reactor setup, geo 624. any help would be greatfull. thanks
pump choices
i am able to get my hands on either a 7522-20 or 7523-80 drive unit, also they both have the 77200-62 head on them, this uses the 15.24.35.36, tubing, would either one of these work for a ca reactor setup, geo 624. any help would be greatfull. thanks
slief
RC Sponsor
I have the 7523-80 which is the same as the 7522-20 near as I can tell. It's a great pump! As far as tubing, with that head, LS24 would be the best bet but I would probably look for an alternate head so you can use the LS17 tubing. A new head should cost you around $100 and if you have an eBay account, you could sell the 77200-62 for about the same.
thanks for the quick reply, i think the 7522-20 is the newest model out, from what i can see on cole parmer's site,was wonder if i shoould go with that or the 7523-80, though about picking up a different head,seen a few on ebay
i can get either drive unit, it would cost me very little to go either way.
i can get either drive unit, it would cost me very little to go either way.
slief
RC Sponsor
I do believe you are correct. The 7522-20 is the newer version although I think it's just a model change and not any physical differences.
swk
New member
You'll be fine with the slower rpm motor. Just more noise and wear than the other gearing for the same ml/min. Otherwise no issues.
slief
RC Sponsor
LS-17 tubing is what we normally suggest. I would suggest a 7518-10 head or any other Easy Load II head that supports LS 17 tubing.
It came with no pump head have to get one.
slief
RC Sponsor
Damn, your fast! I edited my post with the head I would suggest.. 7518-10 or any other Easy Load II head that supports LS 17 tubing. The 7518-10 has stainless steel rollers which is a good thing.
Awesome thanks for the info. Found a 7518-10 head for a good price so snatched it up. Having a hard time finding LS17 tubing that doesn't cost an arm and a leg. I found some ls16 though for real cheap. Can choose between platinum and peroxide cured. Can I get away using this? Reactor is a geo 612.
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