EWIKON HPS III, Operating Manual

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132 HPS-III-Heißkanalsystem_Instandhaltung-Nadelausbau_BA_V-2-0_EN
Picture 111: Deinstallation of valve pin
z342-20
1. Disconnect the wiring of the drive unit.
2. Heat up the hot runner system to processing
temperature.
3. Unscrew the socket head screws (pos. 11.3) of the elec-
tric drive unit. Screw a threaded rod (pos. c, see chapter
„5.3.1 Tools and operating materials“) with striking
weight (pos. d, see chapter „5.3.1 Tools and operating
materials“) into the thread at the backside of the drive
unit to to dismantle the drive unit from the clamping plate
(pos. 51). Then pull out the drive unit (pos. 11) with valve
pin retainer and valve pin carefully and without tilting.
4. Unscrew the valve pin retainer (pos. 11.1) with valve pin
(pos. 17) from the drive unit (pos. 11) by using a wrench.
5. Pull the valve pin (pos. 17) carefully out the valve pin
retainer.
6. For installation of the new valve pin and the drive unit
please see chapter „5.5.11 Electric drive unit“.
7.6.2 Electric drive unit – deinstallation and exchange of valve pins
Maintenance
Connected power supply during installation
Risk of deadly electric shock or severe injuries due to live compo-
nents.
• The cold runner system and the mould have to be disconnected
from the voltage source during installation.
HAZARD!
Sharp edges and heavy components
• Cut injuries to body and extremities, mainly to the hands.
•
Crushing of fingers or hand.
Control of live components before installation
The electrical equipment of the hot runner system should be
checked, especially those areas which will no longer be accessible
after installation. Physical injuries such as an electric shock can be
prevented that way.
Please check
• if cables are kinked or squeezed.
• if cable insulations are undamaged.
Hot surfaces
Burns to the body caused by hot surfaces.
WARNING!