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Laing DDC-3.2 (Blue Impeller) Delay Time

post #1 of 10
Thread Starter 
I got the newer (weaker) DDC-3.2 pumps. These have a 5s start delay time. Can someone tell me if the older DDC-2/3 pump have this delay time?
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post #2 of 10
No thats a safety thing with the blue impeller pump...The old ones would jump to 22W when they first started up....I guess they thought thats what was killing so many of them....
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by ira-k View Post
No thats a safety thing with the blue impeller pump...The old ones would jump to 22W when they first started up....I guess they thought thats what was killing so many of them....
That's what I thought... some sort of voltage rush protection...
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post #4 of 10
Quote:
Originally Posted by DuckieHo View Post
That's what I thought... some sort of voltage rush protection...


Yeah thats all it is...It hurt the performance some, not real bad though I think it still out flows the D-5..,I guess Laing got tired of having to replace pumps....
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post #5 of 10
So still a great pump to get?
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post #6 of 10
Quote:
Originally Posted by Kriegen View Post
So still a great pump to get?


I don't really know they just started selling them here..They have been out in Europe for a while now...It still has decent flow and head, just not as much as the orange impeller 18W DDC....
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post #7 of 10
I have the 18W and it starts right away. No delay time or w/e
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post #8 of 10
Quote:
Originally Posted by ira-k View Post
I don't really know they just started selling them here..They have been out in Europe for a while now...It still has decent flow and head, just not as much as the orange impeller 18W DDC....
orange? i have the black one
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post #9 of 10
Quote:
Originally Posted by Mikey122687 View Post
orange? i have the black one


The black one is the old 10W and the orange is the old 18W...The newer ones all have a blue impeller...
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post #10 of 10
Here is a quick overlay, the two DDC curves are my best estimation interpreting values using Petras charts, and the D5 came from sidewinders MCP655 chart at 12V converted units.

So yes, the DDC2 is better, but don't let the max head pressure make you think the 3.2 is some slouch, for most systems it will still be better than a D5, but it's shortened the margin up a bit:
    
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