Woodward ProTech 203, Руководство по эксплуатации

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ProTech 203 Overspeed Protection System Manual 85204
24 Woodward
Figure 5-1. ProTech System Front Door
3. If you're replacing a fuse in Unit A, remove the ribbon-cable clamp and
retain for use when re-installing the cover (Figure 5-2).
Figure 5-2. Unit Covers Inside the ProTech Device
4. Unplug the power supply board terminal block, then unplug the I/O board
terminal block (Figure 5-2).
5. Remove the four nuts on the unit's cover, and carefully lift the cover off
(Figure 5-2). Retain the cover and the nuts to be reinstalled after changing
the fuse.
6. With the cover off, the power supply board fuses will be visible in the lower
left hand corner of the power supply board, just above the power supply
terminal block.