Metrohm 833 IC Liquid Handling Unit - Manual (Page 95)

9.2 Care and maintenance
830 IC Interface / Gebrauchsanweisung 8.830.1001
87
9.2.6.4 Adjusting the actuator step
It may be necessary to readjust the actuator step on the suppressor
module or sample preparation module in the following cases (see also
Section 9.2.6.3):
• Suppressor/Sample preparation module does move to
next position but its functions are impaired.
• After replacement of the actuator rotor (see Section
9.2.6.3)
The actuator step is adjusted by using the setting screw Step
Adjustment 12 on the rear panel of the 833 IC Liquid Handling Unit.
Proceed as follows:
1 Condition cation exchanger
• If the actuator rotor has been cleaned or replaced the three
cation exchanger units must be conditioned before the
actuator rotor is moved to the next position for the first time.
Condition suppressor module
• see Section 5.1.
• Before the suppressor is switched to the next position for the
first time the actuator units should be rinsed with solution for
5 min.
Condition sample preparation module
• See Section 6.1 and Section 6.2.
• Before the sample preparation module is switched to the next
position for the first time the actuator units should be rinsed
with solution for 5 min.
2 Check position of actuator rotor
• Switch the instrument off and then on again and activate the
suppressor in «IC Net» with <STEP>.
• By turning the suppressor module or using a mirror check the
position of the actuator rotor as shown in Fig. 27: in one of
the openings in the base of the suppressor module it should
be possible to see one of the three holes on the suppressor
rotor, at least partially.
• Repeat the process 2-3 times; before each switch to the next
position with <STEP> wait at least 10 s.
• If the rotor stops in an invalid position then the step of the
actuator rotor must be readjusted (continue with item 3).