Maintenance of a Pump Head Without Seal Wash Option

When

In case of maintenance or pump head internal leaks

Tools required

Qty.	p/n	Description
1	8710-0510	Open-end wrench 1/4-5/16 inch
1		Hexagonal key, 4 mm
1	01018-23702	Insert tool

Parts required

Qty.	p/n	Description
1	5063-6589	Metering seal (pack of 2) for 100 µL analytical head , OR
1	0905-1420	PE seal (pack of 2)
1	5063-6586	Sapphire piston, 100 µL

Prerequisites

Switch off the pump at the on/off switch.
Open the doors of the module.
Use an optional solvent shutoff valve or lift up solvent filters for avoiding leakages.
Remove the Pump Head Assembly.

NOTE

Both pump head assemblies use the same internal components. In addition, pump head A is fitted with the purge valve. The following procedure describes the removal and disassembly of pump head A (left). For pump head B (right) proceed in the same way and skip steps that deal with the purge valve.

Install the pump head, see Reinstall the Pump Head Assembly.