Thermo Scientific Dionex Aquion RFIC Operator's Manual page 96

6
Service
Replacing a Pump Piston Seal and Piston Rinse Seal
80 Dionex Aquion RFIC Operator's Manual
Figure 30. Primary pump head components
Outlet Check
Valve Assembly
(P/N 045721)
Piston Seal
(P/N 055870)
Spacer with Drain
(P/N 057913)
Piston Rinse Seal
(P/N 048722)
Seal Guide
Piston
(P/N 058032)
(P/N 052840)
Figure 31. Secondary pump head components
Piston Seal
(P/N 055870)
Spacer with Drain
(P/N 057913)
Piston Rinse Seal
(P/N 048722)
Seal Guide
(P/N 058032)
Piston
(P/N 052840)
To install the new piston rinse seal

1. Remove the seal guide from the spacer to expose the piston rinse seal and O-ring. Remove
the O-ring.
2. Remove the old piston rinse seal from the seal guide:
a. Hold the seal guide with the flat side facing up.
b. To dislodge the piston rinse seal, gently insert the shaft of the piston through the
small hole in the center of the seal guide (see
Priming Valve Knob
(P/N 055709)
Primary Pump Head
(P/N 055711)
O-Ring
(P/N 014895)
O-Ring
Inlet Check
(P/N 059283)
Valve Assembly
(P/N 045722)
Waste Valve Knob
(P/N 055710)
Secondary
Pump Head
(P/N 055712)
O-Ring
(P/N 014895)
O-Ring
(P/N 059283)
O-Ring
(P/N 055752)
O-Ring
(P/N 055752)
Figure 32).
Thermo Scientific