1290 Infinity II High-Speed Pumps User Manual 203
8Maintenance
Replace Parts of the High Pressure Filter Assembly (G7120A)
Replace Parts of the High Pressure Filter
Assembly (G7120A)
When
For removing blockages and repairing leaks in the high pressure filter assembly. The filter frit in the
outlet valve should be replaced regularly depending on the system usage.
Tools required p/n Description
5067-5688 Torque wrench 1 – 25 Nm with 14 mm wrench
8710-0510 Open-end wrench 1/4 — 5/16 inch
Parts required p/n Description
5067-4728 Seal cap
01018-22707 PTFE frits (pack of 5)
Leakage or damaged connection
Opening the outlet of the primary pump head may cause leaks or damage the
connection between the pump heads.
 Do not open the outlet of the primary pump head.
This procedure describes replacements for channel A (left pump head assembly)
and can be applied accordingly to channel B. In both cases, maintenance is done
only at the secondary pump head outlet, which hosts the filter frit.
1 Remove the capillary connection from the outlet of the
secondary pump head.
2 Use a 14 mm hex wrench for opening the filter assem-
bly of the secondary pump head.
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