8 Disassembly/Reassembly
8-14 FLO-GARD 6301 DUAL CHANNEL VOLUMETRIC INFUSION PUMP SERVICE MANUAL 07-19-B1-729
Replacement of Downstream Occlusion Sensor Assembly
1. Remove two Phillips screws (Figure 11-7 or Figure 11-12 , item 16) that
secure the sensor to the pump head base plate.
2. Pull and rotate the sensor 45° clockwise and carefully remove it from the
pump head base plate.
3. Desolder black and white wires from sensor. Use caution to avoid
contacting any plastic parts with the soldering iron.
4. Remove the screw (Figure 11-7 or Figure 11-12 , item 6), ground wire
and star washer (item 8). Do not lose the washer and screw.
5. Install replacement sensor and reassemble in reverse order. Tightening
torque is as follows:
Q Item 16: 3 kgf-cm (2.6 in-lb)
Q Item 6: 1.5 kgf-cm (1.3 in-lb)
6. Calibrate in accordance with “DC Line Voltage Calibration” on page 9-1
and “Downstream Occlusion Sensor Calibration” on page 9-8.
7. Perform the Operational Checkout procedures in Chapter 10,
“Operational Checkout”.
Air Sensor Assembly Replacement
1. If required, turn pump off and disconnect power cord from outlet.
2. Separate the front and rear housings per “Separation of Front and Rear
Housings” on page 8-5, steps 1 through 3.
3. Separate connector CN811 for Pump 1 and/or CN812 for Pump 2
(middle left of the CPU board as viewed from the rear).
4. Carefully lift and remove the pump head wire assemblies from Pump 2 if
they are routed between the hybrid circuits, HIC301 and HIC302.
Note: Note the location of the wire ties restraining the cable leading to CN811 and/
or CN812 (for later replacement) and carefully cut and remove them.
Note: Be sure not to cut or nick any other wires during this process. Removing two
cable ties usually frees the cable but, in some instances, more need to be
removed. They are replaced with new cable ties upon completion of these
steps.
Maintain an appropriate soldering pencil tip temperature to avoid damaging
insulation.
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