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Action
Step
PT112
a
d
b
c
Remove the pH electrode or pH elec-
trode dummy from pressure cell
pressure cell PT112. Insert the Temp
test tool (a in figure) and secure it in
place with the pH electrode nut (b).
1
Insert a temperature probe, 3-6 mm
in diameter (c), and tighten the top
nut (d) on the Temp test tool.
2
Connect a calibrated temperature
meter to the probe and start a manu-
al flow of approximately 50% (for
both high flow and low flow kit).
3
Read the temperature on the refer-
ence temperature meter and com-
pare the reading to the temperature
displayed in UNICORN (Temp_161).
Calculate the deviation.
4
If the temperature deviation is greater than that given in the specification
(
Section 14.4 Ordering information, on page 210
), contact you local GE repre-
sentative.
5
Testing the UV LED
Action
Step
Prepare three acetone solutions with deionized water
1
•
0.5% (weight percent)
•
1%
•
2%
Connect a flow kit or use the UV cell test tool (part of ÄKTA ready UV Cond
test tools)
2
In the System Control module, start a stray light calibration.
3
Fill the cell with deionized water and perform UV-autozero.
4
Fill the cell with the 0.5% acetone solution and record the reading. Repeat
steps 4 and 5 using the 1% and 2% acetone solutions.
5
ÄKTA ready Operating Instructions 28960345 AD
191
12 Maintenance
12.2 Yearly maintenance