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HPS-III-Heißkanalsystem_Vorspann_BA_V-2-0_EN
Installation
Protect the cable ends
When wiring the system make sure that the thermo and power lines do not protrude from the outer edges of
the mould and are protected against damage. The distances between hot runner and cables inside the mould
have to be dimensioned in such a way that there is no damage to the components caused by excessive heat.
Secure the connection cables
All connecting cables have to secured in such a way that they do not get pinched when they are installed in the
mould (use cable binders and/or covering plates for the recesses).
Adhere to bending radiuses of the coil heater and the thermocouple when doing the wiring. The minimum ben-
ding radius is 15 mm. The connection can only be bent once.
Threads of screws and nozzle tips and threaded holes
Make sure all threads are clean and free moving, otherwise screws do not achieve the requested preload when
tightened with the given torques. Screw connections may separate due to insufficient preload, possibly resulting
in leakage during operation. When screwing in nozzle tips gaps between sealing surfaces may be possible - this
may also lead to leakage during operation.
Unless otherwise indicated only use high-temperature lubricant (see chapter „5.3.1 Tools and operating materi-
als“) to tighten threads in order to ensure the screws can be demounted any time.
Tightening torques
Wrongly chosen torques may lead to an excessive or insufficient preload of screws possibly resulting in leakage
during operation due to separated screw connections (insufficient tightening torque) or damage to screws and
associated components due to overload (excessive tightening torque).
When insufficient tightening torques are used to screw in nozzle tips gaps may form, when excessive tightening
torques are used nozzle tips may be damaged. In both cases this may result in leakage during operation.
Customer-specific torque specifications in assembly drawings, e.g. for special designs, always have to be given
priority over differing specifications.
Only the values summarised in this operating manual and in chapter „9. Tightening torques“ must be used. Also,
please consider whether the tightening torques are valid for lubricated or non-lubricated screws.
