Maintenance - GE IV-908 Instructions Manual

4 Maintenance

Instructions 56-8101-02 Edition AE
CAUTION! Only spare parts approved or supplied by GE Healthcare may
be used for maintaining and servicing the valves.
Period
Every 12 months
or when required
Cleaning-in-place
Pump a cleaning or sanitizing agent through the valve. The standard
recommendation is to pump 1 M NaOH for 30 minutes and wash out with
buffer.
WARNING! NaOH is injurious to health. Avoid spillage.
Changing channel plate and distribution plate
A valve kit is available, see ordering information in Reference Information.
1 Ensure that the valve is disconnected from the pump and the tubing are
disconnected.
2 Remove the 4 screws on the front using the supplied 3 mm Allen key.
Loosen each one equally in turn so the distribution plate comes off
parallel to the valve body.
Channel plate
Distribution
plate
3 Slide the screws out.
4 Remove the distribution plate containing the 8 peripheral ports.
5 Remove the old channel plate and insert a new one.
6 Remount a new distribution plate so that the text i/o is horizontal and
to the right of the central tubing connection. Using the Allen key, tighten
the 4 screws in turn, a little at a time, until the distribution plate is fixed
to the valve body.
Action
Change channel plate and
distribution plate
Maintenance 4
9