9. If equipped, turn on the controller.
CAUTION!
Mechanical hazard – risk of damage to the hot runner. Never operate the hot runner outside
of the melt and mold temperatures indicated on the nameplate. Internal resin leakage or
component damage could occur.
10. Set the temperature of the main manifold heaters, cross manifold heaters (if equipped) and
sprue heater to the melt temperature indicated on the nameplate. Refer to Section 1.7 for
more information about the nameplate.
WARNING!
Hot resin spray hazard – risk of death or serious injury. The sprue heater must be turned on
when the manifold heaters are turned on. Failure to do so could result in the generation of
dangerous pressure levels in the manifold, resulting in the sudden release of hot resin.
11. Turn on the main manifold heaters, cross manifold heaters (if equipped) and sprue heater (if
equipped) zones. Wait for the heaters to reach operating temperature. Wait an additional 10
minutes or more of soak time to make sure the resin has reached the operating temperature.
12. Make sure the main manifold heaters and the cross manifold heaters (if equipped) reach the
set temperature.
13. Turn on the transfer bushing heaters (if equipped) zones. Wait for the heaters to reach the
operating temperature and then wait an additional 10 minutes or more of soak time to make
sure the resin has reached the operating temperature.
14. Open the process material feed. Refer to the machine manufacturer’s documentation for
more information.
5.3
Precharging the Hot Runner
To precharge the hot runner with resin, do the following:
1. Close the clamp and apply tonnage.
WARNING!
Hot resin spray hazard – risk of death or serious injury. Molten resin under high pressure
can suddenly release and spray out from the machine nozzle. Before purging the barrel or
shooting pot, clear the area of all non-essential personnel and wear personal protective
equipment consisting of a heat-resistant coat, heat-resistant gloves and a full face shield
over safety glasses.
2. Purge the injection unit. Refer to the machine manufacturer’s documentation for more
information.
Hot Runner Installation Manual v 2.2 — March 2021 Startup and Operation
Heating Up the Hot Runner, Mold and Machine 57
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