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  1. MAKE SURE YOUR PRINTER IS TURNED OFF AND UNPLUGGED Screw in the pump holders using the fixings provided. The holes are 63.5mm apart. We recommend mounting the pump in the vertical orientation to keep the pump submerged at all times
    • MAKE SURE YOUR PRINTER IS TURNED OFF AND UNPLUGGED

    • Screw in the pump holders using the fixings provided. The holes are 63.5mm apart.

    • We recommend mounting the pump in the vertical orientation to keep the pump submerged at all times

    • Screw the mounts 6 to 8cm appart

  2. Slide the pump into the brackets from the bottom The holders should be tight enough to hold the pump in position without any modification
    • Slide the pump into the brackets from the bottom

    • The holders should be tight enough to hold the pump in position without any modification

  3. Mount the radiator and fan, making sure to leave room for the air to escape on the other side of the radiato
    • Mount the radiator and fan, making sure to leave room for the air to escape on the other side of the radiato

    • This can be achieved by either cutting a hole in the frame or mounting the radiator on standoffs

  4. Plan out the routing of your tubes We recommend that the tubing adaptors be fixed to the frame and to make the link between the moving toolhead and the frame with the nylon tubing
    • Plan out the routing of your tubes

    • We recommend that the tubing adaptors be fixed to the frame and to make the link between the moving toolhead and the frame with the nylon tubing

    • Cut the Kraken tubing (silicon tube) to length using scissors, make sure the end is square and not torn

  5. Attach the tubing adaptors to the frame of your printer Rout your tubing so that the coolant flows in the following order: HotEnd -> Radiator  -> Pump -> HotEnd
    • Attach the tubing adaptors to the frame of your printer

    • Rout your tubing so that the coolant flows in the following order: HotEnd -> Radiator -> Pump -> HotEnd

    • Use cable ties to secure the tubing and the tubing adaptors, make sure not to tighten the cable ties too much as they might restrict the flow of the coolant in the Kraken tubing

    • Take care not to induce any sharp turns in the Kraken tubing to avoid kinks forming and flow being restricted

  6. Make sure all the Kraken tubing ends are fully engaged with the barbs of the adaptors, pump and radiator Secure them in place with cable ties Secure them in place with cable ties
    • Make sure all the Kraken tubing ends are fully engaged with the barbs of the adaptors, pump and radiator

    • Secure them in place with cable ties

    Could you go into more detail on how you got the silicone tube into the connectors on the reservoir and the radiator? I cant seem to get it in.

    Abhishek Rane - Reply

  7. Couple the water-cooling it to your favourite hotend using the clear nylon tubing provided
    • Couple the water-cooling it to your favourite hotend using the clear nylon tubing provided

    • Make sure to use the collet clips provided to stop the tubing from geting loose when the hotend moves around

    • Plug the pump into your power supply so that it runs continuously when the printer is on. This is a safety feature to prevent the hotend from heating up without any cooling

    • We recommend that you use dedicated coolant or coolant additives to run in your system rather than plain tap water to prevent the forming of algae

Finish Line

2 other people completed this guide.

Daniel Halsall

Member since: 08/07/2017

1,063 Reputation

7 Guides authored

6 Comments

The pump have 3 wires, red, black and white. I expect the red is for +12V and black is GND, but what is the white for?

Peter Bøgely - Reply

The white one, if it’s derived from a PC-watercooling kit like I’m guessing, is an RPM indicator signal that normally gets fed back onto the motherboard, much like a PC fan would have 3 pins, +/-/RPM.

Jon Charnas -

What type of coolant additive is used? I like the blue-ish color

Joe - Reply

How many Fluid Ounces of the coolant should I purchase? How many Fluid Ounces does the pump reservoir hold?

Jason M Beam - Reply

The pump is not moving the water. Red wire connected to 12vdc positive and black wire hooked to 12vdc negitive. Any ideas?

Carl Bosson - Reply

Turn off the pump and shake the water a bit - I found that bubbles form on the impeller that basically make it act like a spinning solid that doesn’t generate flow. After getting those bubbles out of the way it works fine. Sometimes just letting it sit off for a few hours lets the bubbles out too, but I’m never that patient.

Jon Charnas -

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