In-Situ Level TROLL 300/500/700/BaroTROLL Operators Manual - Manual (Page 73)

1-800-446-7488 73 www.in-situ.com
3. Fill the container with fresh desiccant. Replace the vent cap. Reattach to cable if
removed.
Antifouling
TROLL Shield Nose Cone
The copper TROLL Shield Nose Cone is designed to reduce macro- and micro-fouling
of the pressure sensor on Level TROLL and Aqua TROLL Instruments. Reduced
fouling on the sensor improves measurement accuracy and extends the length of
deployments.
For optimum performance, the TROLL Shield Nose Cone should be replaced every 12
months or sooner if site conditions are extremely harsh.
Description Part Number
TROLL Shield Nose Cone 0081480
O-ring Inspection and Replacement
Examine O-rings for wear, dryness, discoloration, stretching, cracks, nicks, and
brittleness. Replace when any of these conditions are present. Replacing O-rings on a
regular schedule, regardless of O-ring condition, is the best way to protect against
damage.
Perform the following steps to replace an O-ring.
1. Remove and discard the damaged O-ring.
2. Use a clean, dry, soft cloth to clean the O-ring groove to remove dirt or residue.
3. Lubricate the new O-ring using high-vacuum grease.
a. Wash your hands thoroughly.
b. Apply a small amount of grease to the pad of your index finger, and
rub your index finger and thumb together to spread the grease
evenly.
c. Inspect the new O-ring and remove any debris stuck to it.
d. Rub your fingers around the O-ring until there is a thin layer of
grease on the entire O-ring.
4. Install the O-ring in the groove and remove any excess lubricant with a clean cloth.
Do not allow water or lubricant to enter the connector.