Heidolph Hei-VAP Value Operating Manual page 39

Assembly
Condenser:
Glassware set G5 dry ice
The condenser is mounted to the drive.
Screw inlet tube with inlet valve onto
opening opposite of vapor tube
(see chapter "Assembly, Inlet tubes").
If using inert gas screw inlet tube with
inert gas valve onto opening above
inlet valve.
Place red seal ring into notch at top of
condenser ange.
Place white PTFE ring with collar up on
to condenser ange.
Insert the jacket trap into condenser.
Due to vacuum inside condenser, the
ange is drawn in and the system is
tight.
To protect the dry ice, place black cap
on top.
Inert gas valve
Inlet valve