Model G0923 (Mfd. Since 05/20)
-41-
15. Inspect insulator tube.
— If insulator tube is in good condition,
remove debris and filament buildup.
— If insulator tube is damaged or if there is
buildup inside tube, discard and replace it.
16. Insert insulator tube into heat sink.
17. Connect heat sink to print head with (2) but-
ton head cap screws (see
Figure 55 on Page
40).
18. Push heating block into heat sink.
19. Secure heating block with set screw (see
Figure 53 on Page 40).
20. Preheat heating block to printing temperature
(refer to
Preheating Nozzle on Page 26).
Replacing Nozzle
Nozzles are consumable parts. After 3–6 months
of regular use, the diameter of the nozzle will
increase and the tip will begin to look dull and
curved. When this happens, it is time for a
replacement.
Tools Needed
Qty
Pair of Work Gloves ........................................... 1
Small Crescent Wrench ..................................... 1
Socket Wrench 6mm ......................................... 1
Replacement Nozzle ......................................... 1
To replace nozzle:
1. Unload filament (refer to Changing Filament
on
Page 29).
2. Remove Bowden tube from print head by
pressing down on tube coupler and pulling
firmly on the Bowden tube (see
Figure 57).
Figure 57. Removing Bowden tube.
Before proceeding with the next step, wear
gloves to protect your hands while handling
the hot nozzle and heating block.
21. Hold heating block in place using crescent
wrench and install nozzle with 6mm socket
wrench (see
Figure 52 on Page 39).
IMPORTANT: DO NOT loosen, remove, or
tighten nozzle unless heating block is heated.
Heating block and nozzle threads may be
damaged if threaded while cold. DO NOT
overtighten.
22. Attach print head cover to print head and print
head cover bottom plate to print head cover.
23. Press down on tube coupler, then insert
Bowden tube into print head.
24. Load filament (refer to Changing Filament
on
Page 29).
Summary of Contents for G0923
Page 56: ......
