Husky Unify - Removing the Sprue Bushing; Installing the Sprue Bushing

6.18.1 Removing the Sprue Bushing
To remove the sprue bushing, do the following:
1. Remove the hot runner from the machine. Refer to Section 4.2.2 for more information.
2. Remove the sprue heater. Refer to Section 6.17 for more information.
3. Remove the screws that secure the sprue bushing to the manifold.
1
2
Figure 6-50: Removing the Sprue Bushing
1. Sprue Bushing 2. Screw
4. Remove the sprue bushing.
5. Using a brass rod, remove the resin slug from the sprue bushing melt channel.
6. Clean the sprue bushing. Do not damage any sealing surfaces.
7. Check and repair the nozzle radius, if required.
6.18.2
Installing the Sprue Bushing
To install the sprue bushing, do the following:
WARNING!
Hot resin spray hazard – risk of serious injury. Any contamination or damage at the sprue
bushing and manifold interface may cause hot resin to spray out of the mold, possibly
resulting in serious burns. Both the mounting faces of the sprue bushing and manifold
must be spotlessly clean and undamaged. The mounting screws must also be torqued to
the specied value.
NOTE:
The supplied screws used to install the sprue bushing are of a special quality and must not be
substituted.
1. Clean the surfaces on the sprue bushing and manifold where the two components will
interface.
v 2.2 — March 2021 Unify Manifold System
116 Removing the Sprue Bushing