Agilent 1200 Preparative Pump User Manual 117
Maintenance
7
Simple Repairs
Exchanging the Inlet/Outlet Ball Valves
Removing an Inlet Ball Valve (Bottom of the Pump Head)
1 Disconnect the solvent inlet tube at the inlet valve. Beware of leaking
solvents.
2 Using a 17-mm wrench loosen the inlet valve and remove the valve adapter,
including the valve assembly from the pump head.
Figure 25 Ball Valve Parts
When If internally / externally leaking (back flow)
Tools required • Wrench 17 mm
• Wrench 1/4 inch
Parts required # Part number Description
1 G1361-60012 Valve assembly
The inlet valves do not necessarily have to be replaced in pairs. Use the built in Leak Test
(see “Prep Pump Leak Test Description” on page 98) to identify the valve, that is not
working properly.
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