8 Disassembly/Reassembly
8-12 FLO-GARD 6301 DUAL CHANNEL VOLUMETRIC INFUSION PUMP SERVICE MANUAL 07-19-B1-729
Replacement of Pump Head Assembly
1. Separate the front and rear housings (“Separation of Front and Rear
Housings” on page 8-5).
2. Disconnect the following pump head connectors (Figure 11-18 ) from
the CPU board (Figure 11-2 , item 2) with the wire harness connector
extractor, part no. UKOG1021.A:
Q Pump 1: CN201, CN803 (right side) and CN851 and CN811 (left
side)
Q Pump 2: CN202, CN852, CN812, and CN804 (left side)
3. Remove the screw that secures the pump head ground wire (Figure 11-2 ,
item 13) to the pump head mounting plate (Figure 11-2 , item 5 or 6).
4. Remove the pump door cover (“Replacement of Pump Head Door
Cover” on page 8-9).
5. Open the pump door and remove one black flathead screw and Phillips
screw at the top and bottom right of pump head assembly. (Figure 11-1 ,
items 5 and 7).
6. Close the door and remove two black flat head screws (Figure 11-1 ,
item 5) on the door hinge side that secure the pump head assembly to the
front housing. These screws are accessible only when the door is closed.
Do not open the door before completely removing the two screws from
the pump head assembly.
7. Push the pump head assembly from the back and take it out of the front
housing.
8. Reassemble the pump head assembly in reverse order.
Do not pull out the two flexible cables (Figure 11-6 and Figure 11-11 , items 10
and 11) from their associated connector housings. This action could open the
circuit.
Do not remove the gasket (Figure 11-1 item 4) from the front case.
When resistance is felt, check for pinched wires between the pump head assembly
and the mounting plate or remove tangled wiring harness. Do not force the
assembly out. Insulation of pump head wire harness can be damaged.
Be sure not to pinch the wires and gasket between the front housing and the
pump head assembly when reinstalling the pump head assembly.
The three black screws (Figure 11-1 , item 5) and one Phillips screw (item 7) must
be torqued to 9 kgf-cm (7.8 in-lb). The screw (Figure 11-2 , item 13) for the pump
head ground wire must be torqued to 7 kgf-cm (6.1 in-lb).
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