Metrohm 833 IC Liquid Handling Unit - Manual (Page 84)

9 Troubleshooting - maintenance
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
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9 Troubleshooting -
maintenance
9.1 Faults and their remedies
If difficulties occur when carrying out analyses with the IC system, then
it is advisable to search for their causes in the following sequence
column → pump → eluent → IC system. An overview of faults, their
possible causes and remedies can be found in the Instruction for Use
of both the 761 Compact IC (Section 5.3) and the 819/820 Modular IC
System (Section 4.3.2).
In addition to these general faults, the following table lists those faults
that could occur during the operation of an IC Liquid Handling Unit.
Fault Cause Remedy
Inadequate or no supply
at all from pump • Contact pressure too low
• Pump tubing faulty
• 6.2821.120 PEEK filter unit
blocked
• Connection blocked
Suppressor module /
Sample preparation module
• Actuator rotor blocked
• Set contact pressure correctly: first press
contact lever 5 on the tubing cassette
down as far as it will go, then up again
until the solution is just aspirated. Then
press the contact lever up by 1 click to
achieve the optimal contact pressure.
• Replace pump tubing
(see Section 9.2.4)
• Replace 6.2821.130 filter (see
connection description, Section 9.2.5)
• Check tubing and connections step by
step and clean or replace as necessary. If
the suppressor inlets or outlets are
blocked then dismantle the suppressor
and clean it (see Section 9.2.6.2).
• Replace actuator rotor
(see Section 9.2.6.3).