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EK DDC 3.2 PWM X-RES Warranty

post #1 of 4
Thread Starter 
Anybody know if there is an advantage to buying the EK DDC 3.2 PWM X-RES 140 Combo together vs buying the top, res and a separate Swiftech MCP35X? Seem like you do save a few dollars, but does buying the combo also mean the pump keeps it's warranty? Because of course, removing the top of the MCP35X voids it's warranty.
post #2 of 4
Removing the pump from the EK unit will not void any warrantys

This might be wrong, and its hard to find accurate info on it, but I don't think an EK DDC 3.2 PWM and a 35X are the same things.
The EK is meant to be a PWM controlled DDC 3.2. If you look at the pump performance of a DDC3.25 with an aftermaket high flow top
http://martinsliquidlab.org/2011/02/26/koolance-pmp-400-laing-ddc-3-25-cov-rp400/
they max out at about the 18W of the specs.
While a 35X
http://martinsliquidlab.org/2011/02/25/swiftech-mcp-35x-reservoir/
can go all the way to 24W and even higher.
I can't understand how just PWM control would allow a pump to use that much more power at max. Maybe the EK version would do the same but maybe the 35X has a different speed and power limit control.

The EK pump lists max head specs higher than the 35X so maybe it is the same thing? They also seem have the same Laing model name.

It seems like all the different brands that sell rebranded Laing pumps often use specs from Laing that cover a range of pumps like the D5 series and the DDC series rather than accurate specs for the version they are selling.
eg. Swiftech list the same specs for both the 655 and the 655-B even though they are very different.

Either way you are better off saving the money rather than buying a pump with a top you won't use. Unless you want to keep it as a spare or something.
Edited by Jakusonfire - 9/19/13 at 8:18pm
Kusanagi
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Kusanagi
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post #3 of 4
You can buy either, assemble it by yourself or have it per-assembled by us and have the same standard 2 year warranty!
    
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post #4 of 4
Thread Starter 
I think the pump listing on the EK site has some errors as evidenced by this post. So it's still a mystery as to which version of the pump you are actually getting. Is the EK a modded DDC 3.2 or a DDC 3.25 (to add PWM support)? I'm guessing it's a 3.2 and the "Xylem original model name: DDC-3.25TPPWM4" bit is the typo.

Sounds like the Swiftech 35X version is a then a step above a DDC 3.25 where they've modded/replaced the PCB/reprogrammed to allow more power, and again PWM, right?

I guess the 3.2 runs a bit quieter. Less power than the 35X, but probably more than enough for most loops.

Very confusing.
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