ABB Navigator 550 Quick Start Manual page 2

2 N AV I G AT O R 5 5 0 | LO W L E V E L D I S S O LV E D OX YG E N W E T S E C T I O N | I N F 1 3/ 1 2 4 - E N R E V. B
3 Safety
WARNING
These procedures must be carried out by a trained
technician.
ELECTRICAL
• Isolate all high voltage supplies to the transmitter before
performing replacement procedures.
• The wet-section is vulnerable to electrostatic damage.
Wear an anti-static strap or dismantle the wet-section on
an anti-static workbench.
• Ensure all electrical connections are kept dry at all times.
GENERAL
• Shut off the external sample supply to the wet-section
and drain the flowcell – refer to the wet-section Operating
instructions (OI/ADS550-EN) for flowcell drainage
options.
• When a procedure is complete, restore power to the
transmitter and sample to the wet-section at the correct
flow rate.
• If necessary, calibrate the wet-section – refer to the wet-
section Operating Instructions (OI/ADS550-EN) for
calibration instructions.
• Perform general cleaning of the wet-section using a damp
cloth only – mild detergent can be used as a cleaning aid.
Do not use Acetone or any organic solvents.
• Dispose of the old components in accordance with the
guidelines contained in the Operating instructions
(OI/ADS550-EN).
4 Disposal
WARNING
Dispose of the old components in accordance with the
guidelines contained in the Operating instructions
(OI/ADS550-EN).
5 Dissolved oxygen sensor
assembly location
Figure 1 Low level dissolved oxygen sensor location
Sensor contained
within flowcell