Originally Posted by abel palustre
So After trying two different EKWB Distro Plate G1's I ended up just switching to the Corsair XD5 pump. When turning it on, the pump turned on but very weak when using the corsair RM750x. So I decided to buy a new PowersupplySeasonic Focus GX-750. Plugged it in and the same issue. I decided to move the case around to maybe let some loose air and see if the motor would start spinning and after about a minute, the pump kicked in full gear.
Do pumps usually take time to power to 100%?
Depends on how the PWM is set up. Sometimes no PWM signal means the pump will run at 100%. Most of the D5's I have used run at 100% duty cycle when no PWM signal is present.
Either way once the system is filled, leaked tested, bled you should use the BIOS/Motherboard software app to setup a profile for the PWM on the pump based on temp.
There are more elaborate solutions to regulate pump RPM based on water temp etc... but setting the PWM "curve" via motherboard will be good enough.
Keep in mind, even at full tilt ~4700RPM the D5 pumps are pretty quiet.
But like thrash said, when filling, bleeding, leak testing you ONLY want the pump to have power via Molex/SATA whatever kind it is. The rest of the system needs to be POWERED OFF. Do yourself a favor for future loop maintenance and all that and buy a cheap PSU if you don't have a spare to JUST run the pump. Either make your own jumper or buy one.
, how is EK's D5 pump design flawed? No PWM signal is 100% duty cycle. Been this way with almost any D5 PWM I have owned whether its EK or not.