Labconco Purifie Horizontal Clean Benches 32000 Series - Manual (Page 19)

Chapter 3: Getting Started
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ADJUSTMENT ESTABLISHES THE DESIRED FACE
VELOCITY (FPM), AND AS THE HEPA FILTERS LOAD, THE
MOTOR WILL SPEED UP TO MAINTAIN THE DESIRED
FACE VELOCITY. HAVE THE FACE VELOCITY CHECKED
AT LEAST ANNUALLY AS INDICATED IN CHAPTER 6:
MAINTAINING YOUR XT CLEAN BENCH. REPLACE HEPA
FILTERS WHEN FACE VELOCITY DROPS BELOW DESIRED
RANGE.
If you have any questions regarding certification agencies or need assistance in
locating one, contact Labconco’s Product Service Department at 1-800-821-5525.