Agilent Technologies 1100 Series - Removing and Disassembling the Pump Head Assembly

120 1100 Series Nano Pump Service Manual
3 Repairing the Pump
Removing and Disassembling the Pump Head Assembly
CAUTION
Never start the pump when the pump head is removed. This may damage the pump
drive.
When required:
• Exchanging the seals
• Exchanging the plungers
• Exchanging seals of the seal wash option
Tools required:
• Wrench 1/4 inch
• 3-mm hexagonal key
• 4-mm hexagonal key
Preparations for this procedure:
• Switch off nano pump at power switch
• Remove the front cover to have access to
the pump mechanics
1 Disconnect the capillary at the pumphead adapter
and the tube at the active inlet valve. Beware of
leaking solvents. Disconnect the active inlet valve
cable plug.
Active inlet
valve
to mixer
Plug