Labconco Class I Enclosure Models 3980423 - Manual (Page 53)

Chapter 6: Maintaining Your Filtered Enclosure
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Speed Control Replacement
1. Remove the bracket that the speed control is attached to. See Figures 6-1, and
6-2.
2. Remove the two screws holding the speed control using a Phillips screwdriver.
Refer to Appendix A for Replacement Parts Diagram.
3. Disconnect all wires leading to the speed control. Connect wires on new speed
control in the same position as the old speed control.
4. Reassemble to the system in the same position and with the same screws that
were removed earlier.
Trace Odor Carbon Filter Installation
In the event that low volumes of solvents are required, a Trace Odor Carbon Filter
can be installed.
1. Remove the screws (2) located on each side of the upper diffuser.
2. Lift and remove the upper diffuser.
3. Place the Trace Odor Carbon Filter on top of the HEPA filter with the gasket-
side DOWN. Use care when maneuvering past the airflow sensor. Be careful
not to harm the HEPA filter media that is exposed.
4. Replace the upper diffuser
5. Replace all screws.
Upper Diffuser
Trace Odor
Carbon Filter
Airflow Sensor