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About This Manual
This manual explains how to set up, operate and maintain the Alnor EBT720/EBT721 and AIRFLOW™
Instruments PH720/PH721. Read it thoroughly before using the instrument.
Caution
WHILE USING THE BALOMETER
AIR BALANCING INSTRUMENT TO TEST AIR
FLOW IN DUCTS
, YOU MAY COME INTO CONTACT WITH OR BE EXPOSED TO
DUST
, POLLEN, MOLD, FUNGUS, OR OTHER AIRBORNE CONTAMINANTS. IF YOU
ARE OR MAY BE SENSITIVE TO DUST
, POLLEN, MOLD, FUNGUS, OR OTHER
AIRBORNE CONTAMINANTS
, ALWAYS USE AN APPROPRIATE MASK OR
RESPIRATOR WHILE EMPLOYING THE
BALOMETER
®
AIR BALANCING
INSTRUMENT
.
Formatting and Typography
Step-by-step instructions are numbered in boldface type: 1, 2, 3, etc., set flush-left against the
margin.
References to keys on the micromanometer and the instrument's displayed readout are represented by
a typeface called Arial. In addition to the different typeface, displayed messages appear in quotes.
When reference is made to other sections of the manual, the section title is italicized.
Technical Assistance—Help!
For technical assistance or questions about the instrument, or if the instrument needs repair or
recalibration, call Customer Service at +44 (0) 149 4 459200 (UK), (800) 874-2811 (USA), or (1) 651-
490-2811 (International). Product application notes are available to provide more information on the
product. These application notes, as well as other related material, can be obtained by calling Customer
Service or by visiting the web site at www.alnor.com
or www.airflowinstruments.co.uk.
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