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Melt pressure sensors must be installed and electrically connected by trained people, following all applica-
ble recommendations, with zero pressure and voltage, and with the machine switched off.
The sensor must be removed with the plastic in melt state and the machine in hot conditions.
Always remove the sensor before cleaning the machine, using steel brushes or similar tools.
Always wear protective gloves and always take adequate ESD precautions to prevent electrostatic dischar-
ges that could damage the sensor.
Always use the wrench for the hexagonal nut when installing and removing the sensor.
DO NOT force the electronics housing.
Once the sensor is removed, clean it gently with a soft cloth while the material is still malleable.
The melt pressure sensors Impact series are realized with piezoresistive silicon technology completely "fluid
free".
Even if these are designed with a thick diaphragm, they must be always transported and stocked with the
protection cap and with the package.
Gefran allows melt pressure sensors of own production, also defective units or damage by the use, for the
disposal.
80175G_MAN_I3-IE-IN-IX_I7_11-2018_ENG
3f - Maintenance
3g - Transport, storage and disposal
13
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