tekmar 091 Sensor Socket - Manual (Page 5)

© 2014 090_D - 01/14
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Placement in Existing 091 Socket ----------------------------------- -----------------------------------
Current versions of the Snow / Ice Socket 091 use #6-32 screws. Previous versions
of the 091 used smaller #4-40 screws. When replacing an 090, both sets of screws
are provided. It is recommended to try the smaller screws first to avoid cross
threading.
Salt and Brine Contamination --------------------------------------- ---------------------------------------
The performance of the snow / ice sensor water detection can be compromised
when exposed to de-icing agents such as road salt, magnesium chloride, or calcium
chloride. These contaminants can permanently damage the sensor. It is recommended
to locate the sensor away from areas exposed to these deicing agents when at all
possible. Locations to avoid could include tire track areas or areas close to a curb
where traveling vehicles may splash contaminated water on to the sensor.
Maintenance ------------------------------------------------------- -------------------------------------------------------
The Snow / Ice Sensor is installed in a harsh environment. Accumulation of dirt, salty
grime, etc., on its surface will inhibit proper water detection. It should be checked
on a regular basis and, when necessary, cleaned. Before cleaning, the control
power should be shut off to prevent the control from entering the snow melt mode.
Next, use a soft bristle brush and warm soapy water to clean the sensor surface.
Do not use a steel wire brush as this will damage the sensor. Use a paper towel to
thoroughly dry the sensor surface. After cleaning, re-power the control.
Slab
Brn
Com
Blk Yel Blu Red
Snow Melting
Control
The snow / ice sensor cable has 5 wires: Red, Black, Blue, Yellow, and Brown. The
wires connect to the respective Red, Black, Blue, Yellow and Brown terminals on the
tekmar Snow Melting Control.
Step 3 - Electrical Connections