Thermo Scientific Dionex ICS-2000, Operator'S Manual

Page: 127 / 390

5 • Service
Doc. 031857-03 4/06
5-17
6. If you are installing new cartridges
(P/N 045994) in the existing check valve
housings, place the cartridge in the
inlet
check valve housing with the double-hole
end of the cartridge visible and place the
cartridge in the
outlet housing with the
single-hole end visible.
NOTE The pump will not operate
properly unless the cartridge is
installed in the housing in the
correct orientation. Liquid flows
through the check valve in the
large single hole and out the
small double holes.
7. Install the inlet check valve assembly (P/N 045722) on the bottom of the
primary pump head. Install the outlet check valve assembly (P/N 045721) on
the top of the head. Tighten the check valves fingertight, and then use a
wrench to tighten an additional one-quarter to one-half turn.
8. Reconnect the liquid lines. Turn on the ICS-2000 main power.
9. Open the eluent valve from the ICS-2000 Control panel in Chromeleon or
select Eluent Valve Closed on the touch screen
PUMP
page.
10. Prime the pump (see Section B.13 ).
11. When the ICS-2000 is at operating pressure, check for leaks from the check
valves. Tighten a check valve a little more only if it leaks.
Cleaning Check Valves
1. Carefully remove the check valve cartridges from the valve housings.
2. Place the check valve housings and cartridges in a beaker with methanol.
Sonicate or agitate the parts for several minutes.
3. Rinse each check valve housing and cartridge thoroughly with filtered
deionized water.
4. See Step 6 through Step 11 above to reinstall the check valves and complete
the procedure.
Overtightening may damage the pump head and check valve housing
and crush the check valve seats.
Inlet
Check
Valve
Check
Outlet
Valve
Double-hole
Single-hole