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Pro2 Nozzle Installation Instruction 

1.3 Screw the new nozzle into the heating block. Do not tighten completely. Ensure that there is a 

visible gap between the nozzle and the heating block. 

 

 

 

 

 

STEP 2: 

Tighten the Throat Tube 

Hold onto the heating block, and tighten the throat tube by rotating the heat sink. Rotate until the nozzle 
‘catches’ on to the tube (begins to spin). 

The heat sink may be askew when the right position is achieved. This is normal, and will be adjusted in the latter steps. 

If the heat sink is loose on the throat tube, secure the fixing screw prior to tightening the throat tube.   

 

 

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