User's Guide

4. Inspect the O-rings on the e-module and case to verify they are
present, clean, and undamaged. Apply a very light coating of silicon-
based O-ring grease to the O-rings. (When replacing the battery,
always replace the O-rings.)
The Ranger Pro device uses two O-rings to seal the unit against dust
and moisture.
34x1mm O-ring on the e-module
35x1mm O-ring on the case
To maintain the device's IP67 dust and water-
resistant rating and prevent leaks, you must
install and lubricate the O-rings properly.
5. Inspect the interior threads of the e-module retaining ring to be sure they aren’t damaged.
6. Verify that the positive end of the battery is up and then insert the battery.
Use only approved D-sized lithium-thionyl chloride batteries for the Ranger Pro sensors and
repeaters. For ordering information, see the Ranger Pro Datasheet (document 125M5237).
7. Use the magnetic Ranger Pro battery installation tool to tighten the
battery retaining ring. Hand-tighten the ring until it contacts the
battery, then torque to 5 N-m (44 in-lb).
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Ranger Pro Wireless Condition Monitoring Device
User Guide 125M6113 Rev. F