Replace PT100 RTD Sensors
| Model | [ ] AON M2+ (CE) | [ ] AON M2+ (R-NZ) | [ ] AON M2+ | [•] AON-M2 2020 | [•] AON-M2 |
| Category | [ ] Preventive | [•] Corrective |
Summary
The procedure that follows gives the instructions on how replace the PT100 Resistance Temperature Detector (RTD) sensor.
Estimated time: 15 minutes
Tools
| Qty | Description | Specification |
|---|---|---|
| 1 | Wrench | 7 mm, open |
| 1 | Wire Brush | Clean, Soft bristle |
| A/R | Rags | Lint-free |
| A/R | Isopropyl Alcohol | 99% |
Parts Information
| Qty | Part Number | Description |
|---|---|---|
| 1 | EL-RTD-R02 | PT100 RTD Sensor |
The PT100 RTD Sensor [EL-RTD-R02] is no longer available for purchase and has been replaced by the Cartridge Style PT100 Harness [A-0504-001-R04]. It is an improved design that increases reliability and service life of the heater block assemblies.
The Cartridge Style PT100 Harness [A-0504-001-R04] fits on another heater block assembly. For instructions on how to replace the Cartridge Style PT100 Harness, refer to the Replace Cartridge PT100 RTD Sensors procedure.
To help with machine reliability, AON3D recommends that the two PT100 RTD sensors be replaced as a pair.
Personal Protective Equipment
| Qty | Description | Minimum Specification |
|---|---|---|
| 1 | Safety Eyewear | ANSI/ISEA Z87.1 |
| A/R | Nitrile Gloves | ISO 2859-1 or ASTM D6319 |
Prepare the Machine
- Remove the heater block assembly. Refer to Replace Heater Block Assemblies.
Replace the RTD Sensor
- Use the soft bristle brush to remove any contaminants that are buildup on the PT100 RTD, if necessary.
- Use a clean lint-free rag and isopropyl alcohol to clean any solvents and/or residue from the RTD sensor head.
- Use the 7 mm wrench to remove the PT100 RTD sensor.
- Discard PT100 RTD sensor.
- Clean the surface of the heater block assembly to remove any unwanted material.
- Install the new PT100 RTD sensor into the heater block assembly.
- Use the 7 mm wrench to lightly tighten the PT100 RTD sensor into heater block assembly. Do not tighten too much.
Test and Return to Service
- Install the heater block assembly. Refer to Replace Heater Block Assemblies.