Figure 6-23: Ultra Nozzle Heater (UNH) Assembly With a Ring Thermocouple
1. Retaining Clip 2. Ring Thermocouple 3. Ultra Nozzle Heater (UNH) 4. Nozzle Tip
5. Wave Spring
2. Slide the nozzle heater over the nozzle housing far enough to show the retaining clip groove
on the nozzle tip.
3. Slide the ring thermocouple over the nozzle tip, on to the nozzle heater, far enough to show
the retaining clip groove on the nozzle tip.
4. Install the retaining clip on the nozzle tip and pull the nozzle heater and ring thermocouple
up against it.
IMPORTANT!
Make sure the retaining ring is snapped fully into the retaining clip groove around the whole
diameter of the nozzle tip. Refer to the following gure.
Figure 6-24: Retaining Ring in Nozzle Tip Groove
1. Retaining Clip Fully Seated in Groove (Correct)
2. Retaining Clip Not Fully Seated in Groove (Incorrect)
Hot Runner Installation Manual v 2.2 — March 2021 Maintenance
Removing and Installing Nozzle Heaters 85
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