Gilson CPC Series User Manual page 45

17. Reassemble the head and cleaning disc together by screwing the four central M4 screws
with a 3 mm Allen wrench, but do not tighten completely. Take care that the holes for
tubing connection on the head and cleaning disc are properly placed. Tighten screws until
contact and unscrew one turn. The cleaning disc should be free of movement. Ensure the
SS disc of the cleaning disc is properly fixed (two M3 screws with a 2 mm Allen wrench).
18. Clean the ceramic rotation axis rod with alcohol to remove possible worn seal particles.
19. Replace carefully the rotary seal onto the rotation axis. Appropriate alignment can be
verified by checking that the hole for the fitting on the head is at the bottom.
20. Replace the four peripheral screws of the rotary seal. Tighten slowly in an alternating
criss-cross pattern with a 3 mm Allen wrench. This allows for proper positioning of the
head.
21. Tighten slowly the four central screws in an alternating criss-cross pattern with a 3 mm
Allen wrench. This allows for proper positioning of the cleaning disc.
22. Reconnect the tubing and fittings.
Figure 35
Rotary seal Reassembly
23. Start the pumping system and increase progressively the pressure/flow rate to check the
absence of leakage. (Gilson CPC System turned off.)
24. Reattach the cover and side panels of the rotor housing.
25. Turn on the instrument, open the Menu screen and then the hours Counters screen. Press
Reset below the Seals field to reset the counter and close the Menu screen.
When the Gilson CPC System is used for the first time, or after replacing a seal of the rotary seal
NOTE
assembly, black particles may appear in the waste and fraction collector vessels. This is expected
and will go away with continued use.
Central
M4
PTFE
Screws
Waste
Tubing
SS
Tubing
Peripheral
M4
Screws
PTFE
Waste
Tubing
Gilson CPC systems | UseR's GUiDe 41