Nasco Healthcare LF01274 Light Instruction Manual page 7

Figure 7
E. Refer to Figure 7 (Blue). Plug one end of a uniform diameter tubing
piece into fitting #6. Tuck it under the "green" tubing, then continue
to press it into the channel, taking extra care to minimize pinching
in the loops around the two fingers and the back of the hand. Run
the tubing under the "red" tubing and over both lengths of "yellow"
tubing before connecting to fitting #8 , trimming excess.
F. Double check that all the tubing is in the correct channel and free of
kinks or other obstructions. Check that all fitting connections are as
tight as possible to prevent leaks.
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