Agilent Technologies G4782A, Руководство пользователя

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100 1260 SFC Binary Pump
8
Maintenance
Exchange the Purge Valve Frit or the Purge Valve
Exchange the Purge Valve Frit or the Purge Valve
When • Frit – when piston seals are exchanged or when contaminated or blocked (pressure drop of
> 10 bar in low delay volume configuration and > 20 bar in standard configuration across the
frit at a flow rate of 5 mL/min of water with purge valve opened)
• Purge valve – if internally leaking
Tools required p/n Description
8710-0510 Wrench open 1/4 — 5/16 inch
8710-1924 Wrench open 14 mm
Pair of tweezers
OR Toothpick
Parts required p/n Description
Frits
Purge Valve
5067-4728 Seal cap
Preparations • Switch off pump at the main power switch
• Open the doors
• Use an optional solvent shutoff valve or lift up solvent filters in solvent reservoirs for avoiding
leakages
1
Using a 1/4 inch wrench disconnect the pump outlet
capillary from the purge valve. Disconnect the waste
tube. Beware of leaking solvents due to hydrostatic
pressure.
2
Using the 14 mm wrench, unscrew the purge valve and
remove it from the purge valve holder.