Maintenance
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7. Refit the ferrules (Figure 3). 
8. Push the tube until it is fully home inside the connector. 
9. Tighten the nut by hand and then tighten it 3/4 of a turn. 
10. Pull on the filter to make sure that there is no free play inside the connector. 
11. Start the printer and make sure that there is no air leakage. 
12. Perform routine checks 
Figure 3 
1
Ferrule 
2
Tube
3
Nut
3
1
2