Replace the Rotor Seal

For biocompatible modules use bio / biocompatible parts only!

Do not mix with bio-inert parts.

When

Tools required

Qty.	p/n	Description
1	8710-0510	Open-end wrench 1/4-5/16 inch
1	8710-2394	Hex key 9/64 inch 15 cm long T-handle
1		Cleaning tissue and appropriate solvent like isopropanol or methanol

Parts required

Qty.	p/n	Description
1	5068-0279	Rotor Seal, 3-position/6-port FI Valve (for G7167C) OR
1	5320-0005	Rotor Seal, 3-position/6-port FI Valve, MP35N, 1300 bar (for G7137B)
1	5068-0280	Stator (optional for G7167C) Replacement only necessary in case of wear OR
1	5320-0004	Stator, Bio (optional for G7137B) Replacement only necessary in case of wear

Prerequisites

Finish any pending acquisition job.
Stop the flow at the pump and remove the solvent lines from the eluent bottles to avoid spilling solvent.
Close the shutoff valves at the pump if available.

CAUTION

Reduced life time of the injection valve

Component cleanliness is crucial for the life time of the injection valve.

WARNING

Toxic, flammable and hazardous solvents, samples and reagents

The handling of solvents, samples and reagents can hold health and safety risks.

Be sure that no solvent can drop out of the solvent connections when removing them from your valve head.
When working with these substances observe appropriate safety procedures (for example by wearing goggles, safety gloves and protective clothing) as described in the material handling and safety data sheet supplied by the vendor, and follow good laboratory practice.

In the Agilent Lab Advisor software select Service & Diagnostics > Maintenance Positions > Change Rotor Seal , and click Start.

OR

In the Local Controller start the maintenance mode and select Change Rotor Seal function.
Open the front door.
Close the front door.
In the Local Controller close Change Rotor Seal.

OR

In the Agilent Lab Advisor software Change Rotor Seal , click Back.
For G4767A, end the procedure with a Pressure Test.
For G7167C and G7137B, proceed with the subsequent steps.
Perform Hydraulic Path Leak Test.
Perform Sampler Leak Test if needed for troubleshooting in case of Hydraulic Path Leak failure.

21-Jun-2025