Labconco Type C1 Biosafety Cabinet Models 30468 - Manual (Page 128)

Product Service 1-800-522-7658 128
5. Gently remove the Cable Sealing grommet, located on the side
of the exhaust duct. Remove the solid square plug. Locate the
replacement plug in the air sensor kit, and push the sensor
wiring harness through the slit in the plug.
NOTE: The grommet and plugs are keyed – they only fit
together properly when oriented as shown in the illustration.
Ensure both the replacement plug is oriented properly in the
grommet before installation.
Route the sensor cable from the sensor, through the grommet,
and outside of the exhaust duct. Reinstall the grommet. Ensure
the cable does not hinder the operation of the front relief valve.