Operating Instructions

Fume Hood Controller
User Reference Card
s
Overview
The Operator Display Panel (ODP) is the
interface between you and the Fume Hood
Controller (FHC). The ODP displays the current
condition of the fume hood by illuminating one
of its three status LEDs. The average face
velocity of the fume hood can be displayed in
ft/min or m/s.
During an abnormal operating condition, the
ODP displays various messages to alert you of
the condition.
Components
Liquid Crystal Display (LCD)
Three Light Emitting Diodes (LEDs)
Horn Silence button
Emergency Purge button
Internal audible alarm
Portable Operator’s Terminal Port
Two Auxiliary buttons (for user-
defined functions)
Horn Silence Button
Pressing the Horn Silence button will turn the
internal audible alarm off for the current alarm
event.
Emergency Purge Button
Pressing the Emergency Purge button will
remove contaminated air from the fume hood
by switching to an emergency exhaust flow
level. The internal audible alarm will sound.
Emergency Purge automatically overrides any
other control mode in the Fume Hood
Controller.
Pressing the Emergency Purge button a second
time reverts the FHC to normal operation for
the current conditions.
Normal Face Velocity
Status
When the green LED is illuminated, the fume
hood is operating under normal conditions.
Normal condition means that the face velocity is
within the correct operating range for the fume
hood.
Display
If enabled, the ODP displays the face velocity.
Warning Face Velocity
Status
When the yellow LED is illuminated, the fume
hood is operating under warning conditions.
Warning condition means that the face or
exhaust velocities are marginally too high or too
low.
Display
If enabled, the ODP displays the face velocity.
Action
Notify the laboratory safety officer.
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