1220 Infinity II LC System User Manual 247
Maintenance and Repair
11
Solvent Delivery System
Removing the pump head
assembly
Before exchanging the seals,
or plungers
Exchanging the Plungers If scratched Seal life time shorter than
normally expected — check
plungers while changing the
seals
Table 44 Simple repair procedures - overview
Procedure Typical frequency Notes
Instrument is partially energized when switched off.
The power supply still uses some power, even if the switch on the front panel is
turned off.
➔ To disconnect the Agilent 1220 Infinity II LC pump from line, unplug the power cord.
Sharp metal edges
Sharp-edged parts of the equipment may cause injuries.
➔ To prevent personal injury, be careful when getting in contact with sharp metal
areas.
When opening capillary or tube fittings, solvents may leak out.
The handling of toxic and hazardous solvents and reagents can carry health risks.
➔ Observe appropriate safety procedures (for example, wear goggles, safety gloves
and protective clothing) as described in the material handling and safety data sheet
supplied by the solvent vendor, especially when toxic or hazardous solvents are
used.
Electronic boards and components are sensitive to electrostatic discharge (ESD).
ESD can damage electronic boards and components.
➔ In order to prevent damage always use an ESD protection when handling electronic
boards and components.
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