E-Series Hotend Electronics Replacement (SNAP)

The required tools and materials for this procedure are as follows:

  • Pulse Hotend Electronics Bundle (please contact our Support team with your Pulse serial number)
  • Small zip tie
  • Flush-cut pliers
  • 1.5mm hex driver or Allen key
  • 2.0mm hex driver or Allen key
  • 2.5mm hex driver or  Allen key

DISASSEMBLY:

  1. Begin by removing the silicone sock from the heater block. Using the 1.5mm and 2.0mm hex drivers, loosen (but do not remove) the set screws for both the heater and thermistor cartridges -- E3D V6 hotend shown. Remove the cartridges from the heater block. 

  2. Carefully slip the heater and hotend fan wires out of the cable guide. Then, using the 2.5mm hex driver, remove the two M3 screws securing the hotend fan and cable guide. 

  3. Using the 2.5mm hex driver, remove the single M3 screw (on top) securing the part cooling fan shroud, as well as the two M3 screws securing the part cooling fan. 

  4. Carefully clip the zip tie securing the thermistor and part cooling fan wires. Do not to cut the wires! The zip tie may be discarded and the old electronics bundle may be fully removed. 

REASSEMBLY:

  1. Position the wire configuration and routing as shown in the photos below. 

  2. Route the hotend fan wires through the small clip on the fan frame, then position the cable guide on top of the fan. Note that the fan sticker will be facing inwards towards the hotend. 

  3. Secure the hotend fan assembly to the tool head using the original M3 screws, then route the heater wires and hotend fan wires through the cable guide. 

  4. Route the part cooling fan wires as shown in the photo below, then secure the part cooling fan and its shroud to the tool head using the original M3 screws. 

  5. Insert the zip tie into the slot as shown in the photos below. Note that the hole is curved, so firmly inserting the zip tie will allow it to exit the other end. 

  6. Secure the part cooling fan wires and thermistor wires using the zip tie, then trim it flush. 

  7. Insert the heater and thermistor cartridges into the heater block, then retighten the set screws for both. Take care to not over-tighten the thermistor set screw, as it may pierce the cartridge. 

  8. Lastly, reinstall the Blue silicone sock and you're done!  Be sure to recalibrate your Pulse after reinstalling the SNAP tool head. 

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