Keep the mounting holes clean
Melt Pressure Sensor, Keep mounting holes clean
It is important to keep the transducer mounting holes clean and free of plastic deposits. Before an extruder is cleaned, all transducers must be removed from the barrel to prevent damage. When removed, the plastic is likely to flow into the mounting holes and harden. If this plastic residue is not removed, extensive sensor tip damage will occur when the transducers are reinstalled.
A cleaning tool kit can be used to remove plastic contamination. Note, however, that repeated cleaning can drill “deep” holes and cause damage to the transducer tip. In this case, spacers should be used to upgrade the transducer.
A few simple rules
• Teeth must be machined to correct tolerances.
• A metal-metal gasket is required on a 45 ° seating surface.
• The recommended recess for the mounting holes is flush with 0.010 inches.
• Apply a high temperature anti-stick compound to the teeth before assembly.
• A minimum torque of 100 to 200 inches lb is recommended to ensure a solid seal.
• Do not apply torque above 500 in-lb.