Heater Block Assembly PT100 RTD Sensor Replacement

This procedure gives instructions on how to replace the PT100 RTD sensor if the temperature of the hot end shows 1100°C or varies significantly while printing.

Required Tools & Equipment

  • PT100 RTD Sensor
  • 7mm Wrench

Preparation

The heater block assembly will be very hot if the machine was recently used. Wait for the heater block assembly temperature to decrease to room temperature for safe handling. Failure to let the heater block assembly temperature decrease can cause burns or other personal injury.

  1. Remove the heater block assembly. Refer to the Heater Block Assembly Replacement procedure.

Replace Heater Block Assembly PT00 RTD Sensor

  1. Clean any material buildup from the old RTD sensor head.

  2. Remove the RTD sensor using the 7mm wrench. Discard RTD sensor.

    Heater Block Assembly RTD Sensor Replacement

  3. Clean the surface of the heater block to remove any material buildup.

  4. Install the new RTD sensor into the heater block assembly and hand tighten.

    The RTD sensor can break if over tightened. When installing a new RTD sensor into the heater block assembly, only tighten the RTD sensor until it cannot be removed by hand. Over tightening the RTD sensor can cause permanent damage to the RTD sensor

  5. Slowly tighten the RTD sensor using the 7mm wrench until the RTD sensor cannot be removed by hand.

Test

  1. Install heater block assembly. Refer to the Heater Block Assembly Replacement procedure.

  2. Tap on the Temp tab on the left-hand side of the screen.

  3. Make sure that the current temperature values shown for Left Tool T0 and Right Tool T1 are valid and the values show room temperature.

Last modified: July 29, 2020