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4.2.5 Main Tube Set
The main tube set is supplied as a pre-cut tubing harness with the fluidic inter-
connections preassembled. Replacement of the tube set should be performed
annually. For removal of the tubing, first remove the ISE SnapPak
TM
from the
reagent compartment. This will allow access for removal of the white TPR
block which is the main interconnection between the ISE SnapPak
TM
and the
tubing. This block can be removed by grasping the front surface and pulling
forward. Next, remove tubing from each solenoid valve. Follow the procedure
outlined in Section 4.1.5 for disassembly of the solenoid valves to enable fluidic
tubing to be easily removed at each solenoid. Pull the two pump windings at the
peristaltic pump tube set off the pump roller and remove the white reference
solution tube connector. Remove the white TPR reference solution block by
grasping the front of the block and pulling forward. The three tube connections
are labeled with green, blue and red tags. All remaining tubes can now be
removed and the entire tubing harness can be discarded.
Fit the replacement tubing harness and assemble in reverse order as disassem-
bly. Reference the Tube Diagram on the next page for correct tube locations.