EWIKON HPS III, Operating Manual

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129 HPS-III-Heißkanalsystem_Instandhaltung-Fühlerwechsel-S-SXE_BA_V-2-0_EN
Picture 107: Coated tip of thermocouple
Picture 108: Installation of the new thermocouple
6. Coat the tip of the new thermocouple with heat trans-
ferring paste (see chapter „5.3.1 Tools and operating
materials“) and insert it into the bore in the nozzle as far
as it will go.
7. Bend the thermocouple carefully and wind it along the
heater. At the same time slide the protective tube over
the pressure tube to fix the already positioned part of the
thermocouple.
8. Insert the pressure tube into the nozzle body. Screw in
the flat head screws and tighten with matching torque
(see chapter „9.1 Tightening torques for socket head
screws“).
9. Check functioning of the new thermocouple by heating
up the nozzle with a controller.
10. For notes for installation of the nozzle please refer to
chapter „5.5 Installation of HPS III hot runner systems“.
Picture 106: Disassemble the thermocouple
5. The nozzle heater and the thermocouple are connected
by a protective hose and cable ties. Disconnect the ther-
mocouple, disassemble the broken thermocouple from
the cutout starting at the base of the pressure tube and
pull it out of the bore in the nozzle.
Maintenance
HPS III-S6/9/12/18 (valve gate) nozzles – exchange of thermocouple