EWIKON HPS III, Operating Manual

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78 HPS-III-Nadelverschluss-Heißkanalsystem_Montage_BA_V-2-0_EN
Installation of HPS III valve gate hot runner systems
5.5.17 Installation of the valve pin (for version 1 and 2)
Picture 53: Installation of the valve pin
z381-10
1. Insert the valve pin (pos. 17) carefully into the valve pin
retainer (pos. 21) from behind.
2. Push the valve pin retainer with valve pin carefully and
without tilting through the synchronous plate (pos. 19),
the manifold (pos. 1) and the nozzle (pos. 2). Apply
axial load only. Tilting or bending caused by lateral load
must be avoided. Slowly push the valve pin through the
manifold and the valve pin guide in the tip insert of the
nozzle until the valve pin retainer sits at the bottom of
the recess in the synchronous plate.
3. For doing this a mandrel (pos. c) can be used. Its dia-
meter must be smaller than the tapping drill hole of the
thread in the valve pin retainer (pos. 21). Otherwise the
thread can be damaged.
4. Screw the screw (pos. 20) respectively the overload
safety device (pos. 22) into the valve pin retainer and
tighten with matching torque (see chapter „9.4 Tighte-
ning torques for screws to fix the valve pin in the valve
pin retainer“).
When the hot runner system is not filled the valve pin can be installed
in cold condition.
If the hot runner system is filled it must be heated to operating tem
-
perature before the valve pin is installed.
NOTE!
Connected power supply during installation
Risk of deadly electric shock or severe injuries due to live compo-
nents.
• The hot runner system and the mould have to be disconnected
from the voltage source during installation.
HAZARD!
Pressurised systems
During installation all hydraulic or pneumatic supply lines must be de-
pressurised.
•
Injuries caused by flying parts or "whipping" hoses.
• Injuries to eyes caused by escaping pressurised liquids
WARNING!