Thermo Scientific EASY-nLC 1200 Troubleshooting And Maintenance Manual page 30

1
Introduction
Hardware Components
Figure 5. Syringe pump components (showing the pump head removed from the pump body)
Pump head
Piston
Rotary switch
Pump body
Stepper motor
8 EASY-nLC 1200 Troubleshooting & Maintenance Guide
EASY-nLC 1200 syringe pump (PLU model)
Piston seal
LED panel
The syringe pumps perform these functions:
Component Function
Pumps A and B Draw solvent from the solvent bottles on top of the instrument, empty
solvent to the waste beaker, and deliver solvent to the mixing Tee.
Pump S Draws solvent from the W3 bottle, draws sample from the specified
sample location into the autosampler needle, and empties solvent to
the W4 bottle in the autosampler tray compartment.
For maintenance purposes, the system tracks the volume pumped by each pump
(see "Checking and Resetting the Device Usage Counters"
Backup ring
on page 59).
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