Installation Instructions

Document No. 546-00100
Installation Instructions
Rev. 3, February, 2000
Page 2 of 8 Siemens Building Technologies, Inc.
Required Tools
• #1 Phillips screwdriver
• Flat-blade screwdriver
• 6-inch or larger adjustable wrench
• Paper towels or soft cloths
• Permanent marking pen
• Pencil
• Ruler or measuring tape
• Wire cutters
• Electric drill
• 3/32-inch carbide tip drill bit
• 3/8-inch carbide tip drill bit
• 6-foot ladder
Expected Installation Time
35 minutes
Prerequisites
• If this is your first UniTrak

installation, read
these instructions entirely before beginning
the installation.
• The fume hood sash panels must be installed
to ensure proper fit of the UniTrak

sensor.
• For retrofit installations, notify the laboratory
safety officer that you will be working in the
fume hood. Take the necessary precautions
to have the fume hood cleaned, prepared
and safety certified.
• For best appearance, mount the UniTrak

sensor on the inside of the fume hood.
• If corrosive fumes are to be exhausted,
mount the UniTrak

sensor on the outside of
the fume hood.
• The surface on which you mount the sensor
strip should be smooth, flat, clean, free of
obstacles (rivets, screw heads, nozzles, sash
stops, etc.) and abrasives.
Instructions
WARNING:
Do not proceed with this installation until the
fume hood has been cleaned and emptied of
all hazardous substances including fumes,
vapors, toxic materials, contaminants,
chemicals, bacteria, etc.
The installation instructions consist of five sections.
Sections 3 and 5 have separate instructions for
outside and inside mountings of the UniTrak

sensor.
1. Measuring the Sash Opening
2. Cutting and Mounting the UniTrak
3. Bending Linkage
4. Attaching Linkages to Sash
5. Wiring
CAUTION:
Do not bend or kink the sensor strip, as this
will damage the sensor. Bends in the sensor
strip will actuate the strip causing errors in the
sash measurement.
Section 1: Measuring the Sash Opening
Outside mounted sash sensors:
1. Measure the length of the mounting surface.
2. With the sash window fully closed, mark the
location of the bottom of the sash window with
the marker.
3. With the sash window fully open, mark the
location of the bottom of the sash window with
the marker.
4. Measure the length between the open and
closed marks. Add 2 inches (5 cm) to account
for over-travel.
NOTE: This measurement must not exceed
the mounting surface length from
Step 1.
5. Erase the marks on the fume hood by using
isopropyl alcohol and a soft cloth.