Quote:
|
Originally Posted by Dave
Increasing diameter, will increase flow, which increases pump load.... it does not decrease pump load as some people think.
Pump chambers in an intergrated pump/motor design, can not be modified without effecting load.
|
Not really a problem. A motor isn't designed to be good at 10W and burn at 11W.. There's a tolerance in electronics components about 2 times, power transistors can handle easily more current to coils. A "hack mod" will give you ~0.5-2 W more in total power drawn (real flow gain in a circuit is quite small), and electronics will handle that without any problems. Doing a hack, you'll approach the max consumption when there's no restriction in the loop in normal conditions, and power drawn differences between 0L/h and max flowrate is always small.
It's probably worst to boost a pump with 15 V in its face than make a more "optimized" volute. Laing allows several volutes for the D4/D5 with different diameters and without any changes in motor/electronics. Others manufacturers propose different rotors to choose our own flow characteristics without motor changes and however there could have very big differences in final flowrate.