YSI ADV6600 - Manual (Page 138)

Section 10. Care, Maintenance, and Storage
ADV6600
Y S I
Environmental
Page 128
10-2. Sonde Care and Maintenance
When caring for your ADV6600, remember that the sonde is sealed at the factory, and there is never
a need to gain access to the interior circuitry of the ADV6600. If an attempt to disassemble the
ADV6600 is made the manufacturer's warranty is void.
10-2.1. O-Rings
The ADV6600 sonde utilizes user-accessible o-rings as seals to prevent water from entering the
battery compartment and the sensor ports. If the o-rings and sealing surfaces on the ADV6600 are
not maintained properly, it is possible that water can enter the battery compartment and/or sensor
ports of the ADV6600. This can cause severe damage to the battery terminals or probe ports
resulting in loss of battery power during deployment, false readings and corrosion to the probes.
When the battery compartment lid is removed, the o-rings that provide the seal should be carefully
inspected for contamination (e.g. hair, grit, etc.) and cleaned if necessary using the instructions
provided below. The same inspection should be made of the o-rings associated with the probes and
port plugs when they are removed. If no dirt or damage to the o-rings is evident, then they should
be lightly greased without removal from their groove.
However, if there is any indication at all of damage, the o-ring should be replaced with an identical
item from the maintenance kit supplied with your sonde. At the time of o-ring replacement, the
entire o-ring assembly should be cleaned as described below. Following the recommended
procedures will assure that no problems will occur with water influx into your ADV6600.
To remove the o-rings:
Use a small, flat-bladed screwdriver or similar blunt-tipped tool to remove the o-ring from its
groove. Check the o-ring and the groove for any excess grease or contamination. If contamination
is evident, clean the o-ring and nearby plastic parts with lens cleaning tissue or equivalent lint-free
cloth. Alcohol can be used to clean the plastic parts, but use only water and mild detergent on the o-
ring itself. Also, inspect the o-rings for nicks and imperfections.
CAUTION: Using alcohol on o-rings may cause a loss of elasticity and may promote cracking. Do
not use a sharp object to remove the o-rings. Damage to the o-ring or the groove itself may result.
To re-install the o-rings:
Before re-installing the o-rings, make sure that you are using a clean workspace, clean hands and are
avoiding contact with anything that may leave fibers on the o-ring or grooves. Even a very small bit
of contamination (hair, grit, etc.) may cause a leak.
1. Place a small amount of o-ring lubricant between your thumb and index finger (More
grease is NOT BETTER!)