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Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49

Conductivity Cell Maintenance

The FastCAT’s conductivity cell is shipped dry to prevent freezing

in shipping. Refer to Application Note 2D: Instructions for Care and

Cleaning of Conductivity Cells for conductivity cell cleaning procedures

and cleaning materials.

Pressure Sensor Maintenance

The pressure port plug has a small vent hole to allow hydrostatic pressure to be

transmitted to the pressure sensor inside the instrument, while providing

protection for the pressure sensor, keeping most particles and debris out of the

pressure port.

Periodically (approximately once a year) inspect the pressure port to remove

any particles, debris, etc:

1. Unscrew the pressure port plug from the pressure port.

2. Rinse the pressure port with warm, de-ionized water to remove any

particles, debris, etc.

3. Replace the pressure port plug.

O-Ring Maintenance

O-rings on the FastCAT are typically only disturbed if it is necessary to open

the housing for diagnosis and/or repair of an electronics malfunction.

Sea-Bird recommends that the O-rings be inspected and replaced

approximately every 3 to 5 years.

Remove any water from the O-rings and mating surfaces in the housing with a

lint-free cloth or tissue. Inspect O-rings and mating surfaces for dirt, nicks, and

cuts. Clean or replace as necessary. Apply a light coat of O-ring lubricant

(Parker Super O Lube) to O-rings and mating surfaces.

CAUTIONS:

• Do not put a brush or any object

inside the conductivity cell to dry

it or clean it. Touching and bending

the electrodes can change the

calibration. Large bends and

movement of the electrodes can

damage the cell.

• Do not store the FastCAT with

water in the conductivity cell.

Freezing temperatures (for example,

in Arctic environments or during air

shipment) can break the cell if it is

full of water.

Pressure sensor

port plug

CAUTION:

Do not put a brush or any object in

the pressure port. Doing so may

damage or break the pressure sensor.

Note:

For details on recommended practices

for cleaning, handling, lubricating, and

installing O-rings, see the Basic

Maintenance of Sea-Bird Equipment

module in the Sea-Bird training

materials: www.seabird.com/training/

TrainingHandouts.htm.