Sea-Bird Electronics SBE 45 MicroTSG, User Manual

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Section 6: Routine Maintenance and Calibration SBE 45
39
Replacing Anti-Foulant Device (SBE 45)
The MicroTSG has an anti-foulant device cup inside the housing. New
MicroTSGs are shipped with an Anti-Foulant Device pre-installed in the cup.
Anti-Foulant Devices are sold packaged in pairs. The second device should be
retained as a spare; reseal in its original plastic bag and store in a cool location.
Wearing rubber or latex gloves , follow this procedure:
1.
Keeping the MicroTSG in an upright position, remove the drain plug from
the housing’s bottom plate. Allow any water to drain out and remove any
sediment or debris from the drain before proceeding.
2.
Remove the bottom plate:
A.
Remove the six
1
/
4
-inch socket head screws, lock washers, and flat
washers securing the bottom plate to the housing body. Hold the
bottom plate as you remove the hardware, to prevent it from falling.
B. Pull the bottom plate straight down from the housing body, being
careful not to damage the conductivity cell, which sits in the housing
at the end of the anti-foulant device cup.
3.
Remove the Anti-Foulant Device:
A.
Place the bottom plate on a horizontal surface. Remove the small
O-ring securing the Anti-Foulant Device in the anti-foulant
device cup.
B. Remove the old Anti-Foulant Device. If it is difficult to remove, use
needle-nose pliers and carefully break up the material.
4.
Clean the bottom plate assembly:
A.
Remove the two O-rings on the bottom plate. Put the O-rings aside,
being careful to protect them from damage or contamination.
B. Rinse the bottom plate and flush the inside of the anti-foulant device
cup and post with fresh water to remove sediment or debris.
C. Remove water from the O-rings and the bottom plate with a lint-free
cloth or tissue.
D. Inspect the O-rings and mating surfaces for dirt, nicks, and cuts.
Clean as necessary. Apply a light coat of O-ring lubricant (Parker
Super O Lube) to the O-rings and mating surfaces.
E. Replace the O-rings on the bottom plate.
5.
Place the new Anti-Foulant Device in the cup, and replace the O-ring.
6.
Reinstall the bottom plate:
A.
Align the bottom plate with the housing body, ensuring the end of the
Anti-Foulant Device cup is aligned with the conductivity cell. Slowly
position the bottom plate on the housing.
B. Re-secure the bottom plate to the housing body with the six 1 /
4
-inch
socket head screws, lock washers, and flat washers.
C. Reinstall the drain plug in the bottom plate.
WARNING!
AF24173 Anti-Foulant Devices
contain bis(tributyltin) oxide. Handle
the devices only with rubber or latex
gloves. Wear eye protection. Wash
with soap and water after handling.
Read precautionary information on
product label (see Appendix IV)
before proceeding.
It is a violation of US Federal Law to
use this product in a manner
inconsistent with its labeling.
O-ring, Anti-Foulant
Device, and cup
Drain
plug
Screw
(typical)
AF24173
Anti-Foulant
Device
44