Dionex ASE 150, Operator'S Manual

Page: 87 / 176

5 • Service
Doc. 065207-02 9/08
79
5.6 Replacing Pump Seals
5.6.1 Before Beginning
Disconnect the solvent reservoir and remove it from the top of the ASE
150. Run a rinse cycle (see
Section 3.5 ). This prevents siphoning of
solvent when the inlet tubing is disconnected.
5.6.2 Removing the Pump
Follow the instructions in “Removing the Pump” on page 75 .
5.6.3 Replacing the Piston High-Pressure Seal
1. Use a 3-mm hex driver (P/N 060154) or wrench to loosen and remove
the two screws securing the pump head to the body.
2. Slide the pump head straight off the pump (see Figure 5-11 ).
Lateral motion while disengaging the pump head from the pump may
break the piston.
Figure 5-11. Removing the Pump Head