Hach QC8500 Series 2 - Suppressor Valve Assembly Replacement; Conductivity Module Replacement

98
Ion Chromatography
B.1 Suppressor valve assembly replacement
CAUTION
Potential Chemical Hazard. Turn off the System Unit and disconnect from power
before connecting or disconnecting channels or channel components.
To replace the suppressor valve assembly:
1. Turn off the System Unit and disconnect from AC power.
2. Disconnect tubing from the valve. Remove the manifold.
3. Lift the valve from the channel. Unplug the signal and power cables from the valve.
4. Disconnect the leak detector cable.
5. Connect the leak detector cable to the replacement assembly.
6. Connect the valve cable and power cable to the valve. Set the assembly into
the channel.
B.2 Conductivity module replacement
To replace the conductivity module:
1. Turn off the System Unit and disconnect from AC power.
2. Disconnect the inlet and outlet tubing from the conductivity module.
3. Lift the conductivity module and disconnect the detector cable and power cable.
4. Set the temperature switch according to the QuikChem method. The temperature
switch is located on the side opposite from the cable connections.
5. Connect the Hirose and detector cable to the replacement conductivity module
(Figure 69).
6. Lower the module into place. Connect the inlet and outlet tubing. Refer to the
QuikChem method for details.
Figure 69 Conductivity module (bottom view)
1 Conductivity module 3 Not used
2 Detector cable connection 4 Power cable connection