Emerson Bristol ControlWave LP Manual de instrucciones descargar pdf (Pagina 72)

3-2 / Service ControlWaveLP

Caution

PC board components can be damaged by electrostatic dis-

charges (ESD) during disassembly/reassembly and test

procedures. Use grounded wrist straps and surface pads when

working near or handling circuit boards. See attached in-

struction supplement S14006 for proper grounding and hand-

ling techniques.

3.1.2 Removal/Replacement of the PSSB Board

1. Place any critical control processes under manual control and shut down the Con-

trolWaveLP.

2. Disconnect power wires from PSSB Board Connector TB2 pins 1, 2 & 3.

3. Disconnect the Watchdog Relay connections from PSSB Board Connector TB1 pins 1, 2

& 3.

Figure 3-1 - Top End View of ControlWaveLP

4. Loosen the two screws (C) that secure the PSSB Board to the FMI/OB (see Figures 3-1

& 3-2).

5. Carefully slide the PSSB Board out of the ControlWaveLP assembly.

6. To replace the PSSB Board carefully align the PSSB Board Connector P1 with

Connector P9 on the bottom of the FMI/OB Board and follow steps 1 through 5 in

reverse order, replacing rather than removing the item in question.

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Emerson Bristol ControlWave LP Manual de instrucciones Pagina 72