User`s manual

Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49
50
Replacing Optional Anti-Foulant Devices – Mechanical Design Change
The T-C Duct also serves as the anti-foulant device intake fitting. In the
typical configuration (no anti-foulant devices), the intake fitting is shipped
with a dummy anti-foulant device (inert plastic) installed to reduce
turbulence in the T-C Duct.
As an option for moored applications, the FastCAT is supplied with an exhaust
anti-foulant device fitting and AF24173 Anti-Foulant Devices.
The following two pages provide details on replacing the Anti-Foulant
Devices. However, due to a change in the mechanical design of the T-C Duct
assembly, Steps 1 – 4 and 7 – 9 in Anti-Foulant Device in T-C Duct Assembly
are no longer applicable. See the revised details below:
Removing T-C Duct Top (replaces Steps 1 – 4)
A. Remove the protective plug (if installed) from the end of the T-C duct.
B. Remove the four small Phillips-head screws with o-rings securing the T-C
Duct top to the T-C Duct base.
C. Carefully pull the T-C Duct top straight out – do not apply any sideways
motion or you may damage the temperature sting.
Replacing T-C Duct Top (replaces Steps 7 – 9)
D. Carefully replace the T-C Duct top on the base, reinstalling the four small
Phillips-head screws and O-rings.
E. If the FastCAT is to be stored, reinstall the protective plug in the T-C
duct. Note that the plugs must be removed prior to deployment or
pressurization. If the plugs are left in place during deployment, the cell
will not register conductivity. If left in place during pressurization, the cell
may be destroyed.
Dummy Anti-Foulant
Device for
intake fitting
Anti-foulant device exhaust
cup & cap (optional)
Straight exhaust shown; anti-foulant
device fitting detail also applie
s to
FastCAT with Tee exhaust
.
Top
Base
T-C Duct /
Anti-foulant device
intake top & base
Remove
plug
from
end of
T
-C Duct
T-C Duct Base remains attached
and sealed to top of conductivity
cell - do not remove
Temperature
sting
Phillips-head
screws (4) and
O-rings, shown
partially
removed
Temperature
sting