Hach Lachat, User Instructions, Page: 20 / 30

4. When the deionized water level is almost at the top of the hole, install the reference electrode.
Refer to
Install a reference electrode on page 12.
5. Clean all spills with a lint-free cloth.
Look for leaks and blockages
Make sure that there are no leaks or blockages at the flow cell, the tubing or the fittings. Leaks and
blockages interfere with analysis.
1. Make sure that liquid comes out the outlet tube at the inlet flow rate.
2. If the flow is stopped or too low at the outlet tube, loosen the tube fittings and/or tube unions as
necessary to increase the flow.
Note: Flow is stopped or decreased if the tube fittings and/or tube unions are turned too tight.
3. If the flow does not increase, examine the tubing for damage and blockages. Replace tubing as
necessary.
4. Make sure that there are no leaks from the cell gasket area of the flow cell, the tubing, the fittings
or the reference electrode holder.
5. If a leak is found, fix the leak.
6. Set the pump speed to 35.
7. Do steps 1 – 5 again.
8. Set the flow to off.
User interface
N O T I C E
Do not touch the flow cell unless the CELL MODE knob is set to STBY or damage to the potentiostat and working
electrode can occur.
N O T I C E
Do not set the POWER switch of the potentiostat to ON or OFF unless the CELL MODE knob is set to STBY or
damage to the potentiostat and working electrode can occur.
Figure 10 shows the switches and knobs of the potentiostat. Refer to Table 1 and Table 2 for the
knob and switch descriptions.
Refer to
Configure the potentiostat on page 22 to configure the potentiostat for the QuikChem
amperometric cyanide methods.
20 English