8 Disassembly/Reassembly
8-12 FLO-GARD 6201 VOLUMETRIC INFUSION PUMP SERVICE MANUAL 07-19-B1-688
Replacement of Pump Head Assembly
1. Separate the front and rear housings (“Separation of Front and Rear
Housings” on page 8-5).
2. Disconnect four pump head connectors, CN201, CN851, CN803 and
CN811, from the sensor board (Figure 11-2 , item 3) with the wire
harness connector extractor, part no. UKOG1021.A.
3. Remove the screw that secures the pump head ground wire to the pump
head mounting plate (Figure 11-2 , item 14, top ground wire only).
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 4 and 6).
6. Close the door and remove two black flat head screws (Figure 11-1 ,
item 4) 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 (refer to “Routing
of Internal Wiring” on page 8-33).
Do not pull out the two flexible cables (Figure 11-6 , items 10 and 11) from their
associated connector housings. This action could open the circuit.
Do not remove the gasket (Figure 11-1 item 3) from the front case.
When resistance is felt, check any 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 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 4) and one Phillips screw (item 6) must
be torqued to 9 kgf-cm (7.8 in-lb). The screw (Figure 11-2 , item14) for the pump
head ground wire must be torqued to 7 kgf-cm (6.1 in-lb).
Route the pump head wiring harnesses as close to the side of the pump head
assembly as possible so that the wires are not pinched or damaged by internal
components when the housings are closed.
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