Tektronix Keithley 4200A-SCS - Air Intake Ventilation Screens

Model 4200A-SCS Setup and Maintenance User's Manual Section 4: Maintenance
4200A-908-01 Rev. A December 2020 4-3
Figure 26: 4200A-SCS System Monitor
Air intake ventilation screens
Your 4200A-SCS comes equipped with an internal axial fan for active cooling of the instrument
cards. Your instrument must be properly cooled to maintain optimum operating specifications.
There are three air inlets on your instrument: One on each side and one on the bottom.
Every six months or when a screen appears to be clogged, use a vacuum cleaner with a soft brush
attachment to carefully remove the accumulated particulates. The screens must remain unrestricted
to provide sufficient cooling airflow.
Never use compressed air to blow debris from the screens. Doing so can force particulates
through the screen and into the instrument.