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Review on the New Koolance RP-452x2 Rev. 2.0...

post #1 of 4
Thread Starter 
I can tell you first hand that the Koolance RP-452x2 Rev. 2.0 is an EASY setup. Just make sure you have Quick Disconnects (QDs) on the end for your connections so you can fill it to the top with whatever fluid you're going to use, then just shake the Dual Bay Res (DBR) and keep filling it till it's filled to the rim. then cap it up and just connect your tubes that already have fluid in therm and... YOUR OFF RUNNING, with little to no bleeding issues. In fact my bleeding issues only lasted about 10 min. and then it was done; nice and quiet. The RP-402x2 Rev 1.1 on the other hand; what a pain in the behind. It wouldn't bleed for nothin' and I couldn't tip it over because I had a very large unit, so got some input on how to handle it and a couple of guys said to just let it self bleed. It worked itself out in about 2 days, but for whatever reason built up a ton a pressure. When I turned it off and then tried to open the left cap the pressure just spurted the fluid out... not good, as I was using Koolance's coolant (basically antifreeze) and that stuff is pretty corrosive and not doesn't work well on skin and it stains badly. Thank goodness I had a towel, but MAN did it spurt !!!

I'm not having that experience with the 452, but I am having issues with the pumping pressure on that unit. What kicks me is that the 402 pumps have more pressure and fluid; twice that of the 452, and the 402 uses PMP-400 (DDC 3.2) pumps that are supposed to be lower in water flow than the PMP-450 (D5) pumps. I thought that the D5's were supposed to be better. They're not when it comes to pressure and more flow; especially working both units in series with each other. BUT they do run cooler, as they don't heat up the way the DDC (smaller) pumps do; which raises the temps in the fluid.

There's your trade off; DDC (smaller) pumps that pump more pressure and fluid, but create more heat, and the D5 (larger) pumps that pump less pressure and fluid, but create 1/2 the heat. So what's the temp difference?... ZERO... So I'm sticking with the bigger pumps for now... Plus, talking with Tim at Koolance said: "Once you're using a Liter or more of fluid in your total loop, the temp gains using either setup is moot." So there's my review on the product; short and sweet. Period, new paragraph. Bottom line, both setups work great. Actually getting the 402x1 pumps the most pressure and requires only one bay with the two smaller Laing DDC pumps. Read the review here:

http://martinsliquidlab.org/2011/07/11/koolance-rp-401x2-reservoir/

Even though its very small, it's the best dual pumping system available, but it does run twice as hot than the larger Laing D5 pumps. Later... cool.gif
Edited by PunkNugget - 6/10/12 at 10:20pm
    
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post #2 of 4
Thanks for the review +1
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by Whole Wheat View Post

Thanks for the review +1

Thanks... cool.gif
    
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post #4 of 4
So i can't just install this unit and fill it like every other dual bay res ?

I though the new version solves all those issues and comes with a bleeding adapter ?
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