Labconco Purifie Horizontal Clean Benches 32000 Series - Manual (Page 26)

Chapter 4: Theory of Operation and Safety Precautions
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Speed Control
The speed control should only be adjusted by a qualified
certifier.
Le contrôle de la vitesse doit être réglée uniquement par un
certificateur qualifié.
The speed control is an electronic circuit that allows the certifier to set the air face
velocity (fpm) by adjusting its voltage.
THE XT CLEAN BENCH USES A SELF-ADJUSTING ECM
MOTOR TO MAINTAIN AIRFLOW ACROSS THE WORK
AREA. THE SPEED CONTROL
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.
Never block or obstruct the air intake at the bottom sides of
the clean bench.
Ne jamais bloquer l’entrée d’air au dessus de l’hotte.
Safety Precautions
Because air from the work area is dispersed directly into the
laboratory, the Purifier XT Clean Bench should never be used
in conjunction with biohazardous material, toxins, or
radionuclides. The operator and qualified safety officer(s)
must carefully assess the risk associated with any operation
performed in a Clean Bench.
Étant donné que l’air de la zone de travail est dispersée
directement dans le laboratoire, l’hotte à flux laminaire Purifier
XT ne doit jamais être utilisé conjointment avec des matières
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