Caution

When connecting the power cable ensure the polarity of the wires is correct (the table given above applies to power cords supplied by Fisher & Paykel Healthcare). If other cables are used ensure that they are fitted with ferrules to prevent loose wire strands.

102 mm

Heater wire insulation

Power cord

Cable clamp

insulation

37 mm

Cable collet

6

Figure 6.10: Showing the disassembly, assembly of the cable clamp

 

1.Open the case and remove the PCB (§ 6.2).

2.Cut the cable tie retaining the phase and neutral conductors to the PCB (see Figure 6.4 for PCB connection locations).

3.Unscrew the power cable conductors from their terminal blocks.

4.Unplug the heater-wire adaptor harness from the PCB.

5.Slide the cable assembly off the transformer support.

6.With a large flat-blade screwdriver, carefully lever off the cable collet from the cable clamp. (Figure 14 shows separated cable clamp parts).

7.Replace the power cable (refer to Table 10) or heater-wire adaptor (part number 043 042 322) as required.

8.Leave approximately 102 mm of the heater-wire insulation protruding from the closed cable clamp, and 37 mm of the power cord insulation (Figure 6.10).

9.Carefully slide the cable collet back over the power cable and forcefully press the cable collet back onto the clamp.

10.Terminate the power cable to the correct locations on the PCB. (Refer to Table 10 for colour codes, and Figure 6.4 for PCB connection locations).

11.Anchor the phase and neutral conductors to the PCB with a small cable tie (2.5 mm wide).

12.Slide the cable assembly back onto the transformer support; ensure cables are not under excessive tension.

13.Install the PCB and close the case (refer to § 6.8).

14.Check the power cable is held securely by pulling on it firmly.

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MR810 Technical Manual Rev C REF 185042601