5.
Open the cover.
The battery is attached with velcro to the back of the cover.
6.
Disconnect the used battery and discard.
7.
Connect the new battery.
8.
Put velcro on the new battery. Attach the battery to the back of the cover.
9.
Put the cover on.
10.
Install the four screws.
11.
Connect the power supply to the potentiostat.
Shutdown
Between measurements, set the CELL MODE knob to STBY.
When analysis is complete, shut down the amperometric detector. Refer to the QuikChem method for
the shutdown procedure.
Troubleshooting
Refer to the supplied
BASi Principles of EC Detection and Troubleshooting Guide
manual for
additional troubleshooting information.
Problem
Possible cause
Solution
The potentiostat display does not
come on.
The POWER switch of the
potentiostat is set to OFF.
Set the POWER switch of the potentiostat
to ON.
The battery is not charged.
Connect the power supply to the
potentiostat and an electrical outlet with
power.
The battery does not charge.
on page 25.
The potentiostat operation is not
correct.
Damaged potentiostat
Identify if the operation of the potentiostat is
correct. Refer to
on page 26.
There is a slow, steady decrease in
the electrode response.
Unwanted material and/or
silver oxide has collected on
the working electrode.
Polish the working electrode. Refer to
on page 24.
A regular pattern of baseline
oscillation occurs with a period that
is the same as the pump stroke.
There are bubbles in the
system.
Remove the bubbles in the system. Refer to
Remove bubbles from the system
on page 19.
Do potentiostat diagnostics
Do potentiostat diagnostics to identify if the operation of the potentiostat is correct.
1.
Set the CELL MODE knob to STBY.
2.
Set the POWER switch of the potentiostat to ON.
3.
Set the DISPLAY knob to OFFSET nA.
4.
Turn the OFFSET knob until the display shows approximately "0.00" or "00.0" (0 nA).
5.
Set the RANGE nA knob to 200 nA.
6.
Set the FILTER Hz switch to 0.3 Hz.
7.
Connect a digital voltmeter to the potentiostat as follows:
a.
Insert the black probe of the multimeter in the GND port.
b.
Insert the red probe of the multimeter in the I OUT port.
8.
Set the CELL MODE knob to TEST.
26
English
Summary of Contents for Lachat
Page 1: ...DOC272 97 80511 Lachat Amperometric Detector 04 2015 Edition 1 User Instructions ...
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