Thermo Scientific Dionex, Operator'S Manual

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Dionex Integral Systems Operator’s Manual
132
Doc. 065250-06 03/2020
10.5 Replacing a Pump Piston
Continued leaking of the piston seal after installation of a new seal (assuming that
the pump head is tight) indicates a dirty, scratched, or broken piston.
Follow the instructions in Section 10.4 to install a new piston (P/N 066110) and
piston seal (P/N 069006) in the dilution pump or the stepper motor loading pump
(P/N 068561, both pumps). When replacing a piston, always replace the piston
seal, also.
10.6 Replacing the Waste Valve Seal
A damaged seal causes leakage around the base of the waste valve knob.
1. Turn off the main power.
2. Disconnect the power cord.
3. To remove the waste valve from the pump head (see Figure 10-5 ), turn the
knob counterclockwise until it is loose, and then pull the knob straight out of
the cavity in the pump head.
Figure 10-5. Waste Valve
Waste Valve