Maintenance; Sonde Maintenance - Xylem EXO Series User Manual

Sonde
6.1

Maintenance

Like all precision equipment, EXO sondes work most reliably when users maintain them properly. A proper
inspection and cleaning can prevent several issues, including leaks. When performing general maintenance
on the sonde, also check this manual's depth and connector sections. Use only the recommended materials to
service instruments. Each sonde comes with a maintenance kit, including proper lubricants and replacement
o-rings. Users can order another replacement o-ring kit (#599680) or tool kit (#599594) from the manufacturer
or an authorized distributor.
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1 Inspect and service o-rings
User-serviceable o-rings are located in the EXO sonde
battery compartments. Perform a thorough visual
inspection of o-rings each time they are exposed. Carefully
look for grit, hair, etc. on the o-ring and mating surfaces
and wipe away any contamination with a lint-free cloth.
Without removing them from their grooves, lightly grease
each o-ring with Krytox. Replace any damaged o-rings.
2 Replace o-rings.
If the above inspection reveals a damaged (split, cracked, or
misshapen) o-ring, remove it. Wipe the groove clean with
alcohol and a lint-free cloth. Grease the o-ring by drawing
it between your lightly greased thumb and index fingers.
Place the o-ring in its groove, being careful to not roll or
twist it, and lightly grease the surface. Inspect the o-ring for
contamination.
A
Do not apply excess grease to the o-rings. This can cause
contamination and seal failure.
3 Inspect, clean, and grease ports.
Visually inspect each port for contamination (grit, hair,
etc.). Should the user detect contamination, remove it with
a blast of compressed air. When the port's rubber appears
dry, lightly grease the sensor connector before insertion.
A
Never insert solid objects into the sonde ports. This could
permanently damage the connectors.