Mindray BA-88A Service Manual page 32

Figure 3-10 Flow cell assembly structure
3.2.4.3 Assembly and Disassembly of the Flow Cell Base Assembly
Flow cell assembly is fixed on the instrument base by 4 M4 socket head screws and
positioned by 2φ3 pins. When maintaining the components on the side of analogue
board and air duct, it is not necessary to dismount the flow cell base assembly and
maintenance can be done on the dismounted photometer assembly. When
dismounting the components other than the position mentioned above, dismounting
of the whole assembly is needed. When dismounting the assembly and relevant
components, please pay attention to the following:
1
When replacing the refrigeration plate, we recommend you to replace it after
dismounting the photometer assembly. The order is: 1. dismount the photometer
assembly as a whole; 2. dismount the flow cell air duct; 3. dismount the
refrigeration plate; 4. replace the refrigeration plate. Reverse the above
procedures to install.
2
When installing the refrigeration plate, please pay attention to the installing
direction. The cable should project at the side of the analogue board and the red
cable should be lower;
3
The semi-conduct refrigeration plate should be installed between the air duct
and the flow cell base. Before installing, apply heat conducting gel to both sides
of the refrigeration plate (the thickness is about 0.05-0.1mm, the gel should be
evenly applied and no granule or nodular matter is allowed; the gel should not be
too watery). Correctly stick the plate inside the groove of the flow cell assembly
(follow step 2).Stick the air duct to the other side of the plate and tighten it with
spring and spring lightener. The two longer spring lightener should be inside the
hole on the upper side of the air duct and insulation is needed. Use straight slot
head screw driver to tighten the screws.
3-10 3 System Description