Husky Unify - Removing the PEEK Bushings; Removing Insulating Gate Bubbles (if Equipped)

6.15.1.3 Removing the PEEK Bushings
Due to the extreme temperatures in a uidized bed (454 °C or 850 °F), Polyetheretherketone
(PEEK) bushings must be removed from the manifold heater ends. The PEEK bushings will melt if
subjected to the cleaning process.
To remove the PEEK bushings, twist the bushings 1/4 turn to break the adhesive used to attach it.
Figure 6-43: PEEK Bushing Removal and Installation
The bushings must be installed after the uidized bed cleaning process. New adhesive is not
necessary.
6.16
Removing Insulating Gate Bubbles (If Equipped)
In place of nozzle tip insulators, some hot runners form a bubble of resin at the nozzle tip referred
to as an insulating gate bubble. The bubbles provide thermal insulation between the nozzle tip
and the cold cavity plate steel. They also increase the speed of color changes and prevent the
degradation of some heat sensitive resins. The gate bubble needs to be removed if the gate hole
is blocked by contamination.
v 2.2 — March 2021 Unify Manifold System
108 Removing the PEEK Bushings