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Installation of vapor tube
Insert the vapor tube into the drive shaft until it stops, rotate the vapor tube to fix its projecting points to the
groove of locking nut. Then rotate clockwise the locking nut tightly. Try to pull the vapor tube out to check if it
was firmly installed.
Drive Shaft
Locking
After Installation
Installation of the seal rings
Place the dark seal ring in the vapor tube with the spring side face inside, then fit the grey seal ring to vapor tube
with central bulge part out. Press the two seal rings to the bottom. Note the seal ring direction, improper
installation will cause system vacuum failure.
Auxiliary Gray
Seal Ring
After Installation
www.labtechsrl.com
EV400 SERIES – User Manual
Projecting
Points
Vapor tube
Main Dark Seal Ring
Page 15 of 39
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