Geotech ET WLM, Инструкция по установке и эксплуатации

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Section 4: System Maintenance
Battery Replacement
Replace the battery when the audible and visible signals become weak or the
unit does not operate.
1. Gently remove the battery tray.
2. Remove the old battery and replace it with a new one.
Be aware of the polarity (+, -) of the battery when placing the new
battery in the tray. Use a 9V alkaline battery only.
Cleaning
The ET WLM can be cleaned with mild detergents such as trisodium phosphate
(TSP). If other detergents are used, take care to select detergents that are
compatible with PTFE, polypropylene, and stainless steel. The reel should not be
submerged in any liquid, but may be cleaned with a damp cloth.
Cleaning the Conductivity Contact
The conductivity contact of the probe should be periodically cleaned with a non-
abrasive cleaner such as isopropyl alcohol, xylene, methanol, or phosphate free type
cleaner. To clean the conductivity contact, place a small amount of the cleaner on a
cotton swab; rub the conductivity contact to remove all foreign matter. Repeat this
process until all foreign matter has been removed.