Dead D5s

[Iwf]

Just checking on my logic around a couple of dead D5s. i'm in the throws of upgrading my rig, along the way replacing an old EK Res/Pump with a Corsair I bought off ebay. I old EK seems to have stopped the Corsair seems dead too.

I think, hence the test of my logic, both can coupled directly to the PSU and with a jumper on the 24 pin cable made to run just the water loop. This is the way i've primed systems for year. However neither work. The Corsair is sealed but I've taken the EK D5 apart. No dirt and the impeller is free. By hand though I can't turn the motor.

Am I missing something or are both actually dead.

thanks in advance

 

[loonyk]

Motor wont turn. It generates magnetic field, so impeller turns on its own. Remove impeller, switch pump on and try something metal to pump metal part. Potentially one or more of the coils on motor are gone

A D5 pump, a type of water pump, uses a centrifugal action to move liquid. It features a spinning impeller (rotor) that pushes water through the system, driven by an electronically commutated spherical motor. The pump's speed can be adjusted through PWM control or by varying the input voltage.

How it Works:

1. 1. The Spherical Motor:
   The D5 pump uses a spherical motor, where a hemispherical impeller (rotor) is mounted on a ceramic bearing ball.
   
   
2. 2. Electromagnetism:
   The rotor, containing a permanent magnet, interacts with electromagnets placed under the metal shell, creating a rotational force.

 

[Mcnumpty2323]

Check whatever
You're using to bridge the psu pins
Is actually working
Had it in the past with one of those bridging
Things was faulty/not making proper contact
Now i just use a netting staple
Which happened to be perfect size instead

 

[Iwf]

Thanks both. I got one of them working. Now if I can sort out the seal between the motor and EK housing I should be sorted. Interesting how they work. No wonder everyone used the same D5. The inventor must have made a fortune in licencing.

Any ideas how i might improve the seal ?

 

[Mcnumpty2323]

Improve the seal in what way?

Usually for watercooling stuff
If i need a new 0 ring or seal or repair leaking blocks
I go to the local car factors
And get a tube of instant gasket

 

[loonyk]

Thanks both. I got one of them working. Now if I can sort out the seal between the motor and EK housing I should be sorted. Interesting how they work. No wonder everyone used the same D5. The inventor must have made a fortune in licencing.

Any ideas how i might improve the seal ?

Best to buy new replacement oring if old one is damaged. Otherwise use silicone grease (not sealant) to grease o ring and reassemble it back together

 

[Iwf]

Motor wont turn. It generates magnetic field, so impeller turns on its own. Remove impeller, switch pump on and try something metal to pump metal part. Potentially one or more of the coils on motor are gone

Hi, It stopped again. Could you explain your fix again. So bringing a metal screwdriver in contact with the metal part of the bowl in which the impeller sits? What should the effect be, the motor starts ?

 

[loonyk]

No it would attract metals, beacause bowl is getting magnetised

 

[Mcnumpty2323]

Think he means
As a test to see if the motor is dead
Not as a fix/repair

If the motor isn't working
No magnetic field is being generated
So screwdriver etc
Won't stick to the part the impeller sits in
Obviously if its some sort of intermittent fault
Bad/dry/cracked soldering joint for example
It may not be 100% reliable
As it can start/stop working but unless you
Can use a multimeter
Its a good test with simple tools

 

[Iwf]

Think he means
As a test to see if the motor is dead
Not as a fix/repair

If the motor isn't working
No magnetic field is being generated
So screwdriver etc
Won't stick to the part the impeller sits in
Obviously if its some sort of intermittent fault
Bad/dry/cracked soldering joint for example
It may not be 100% reliable
As it can start/stop working but unless you
Can use a multimeter
Its a good test with simple tools

I bought a couple of spares off ebay so am fixed. but useful info for the future. The screwdriver trick certainly didn't work. but thanks all the same.