EWIKON L2X, Руководство по эксплуатации

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55 HPS-III-Heißkanalsystem_Inbetriebnahme-Sicherheitshinweise-Voraussetzungen_BA_V-2-0_EN
Start-up and instructions for operation
NOTE!
When processing materials with flame retardant additives or glass fibre reinforcements we recommend to purge
the hot runner system with natural material of the same type without additives after end of production. This will
facilitate the next start-up.
When conducting colour and material changes it is advantageous if the contour plate can be separated from
the stationary mould half (nozzle side). Thus, the nozzle tips become accessible for cleaning and maintenance
purposes. This is required when a colour change can not be successfully carried out by just purging the system.
CAUTION! PPE
A HPS III hot runner system must only be started up when used as intended within an
injection mould.
Respect operating temperatures
For all further checks the HPS III hot runner system must be heated to operating tem-
perature in order to avoid damage to hot runner components.
Each hot runner system is individually designed for the material to be processed.
Therefore, the specified operating temperatures must be observed. The temperature
difference ∆T between hot runner temperature T
HK (processing temperature) and
mould temperature TWZ, must be strictly adhered to.
•
Non-observance may cause an escape of melt inside the mould (∆T too low) or
damage to components (∆T too large).
Improper processing of thermoplastics in the injection moulding process
The guidelines of the material manufacturer such as processing temperature and
mould temperature must be observed. Otherwise the moulded parts can be faulty or
the hot runner system can be damaged.
Risk of injuries during installation
During installation the following injuries may occur:
• Cut injuries due to sharp edges.
•
Crushing of fingers or hand.
Leakage during operation
Using a wrong combination of radii of sprue bush and machine nozzle can result in
unwanted escape of melt during the injection moulding process.
Observe system temperatures during installation / disassembly
Damage to the melt seal.
• Disassemble contour plate in cold condition.