Yokogawa DO402 Dissolved Oxygen Analyzer User Manual
Page 77
IM 12J05D02-01E
Maintenance 7-3
How to replace the fuse
1) Before replacing the fuse, turn off power to the instrument at the external breaker.
2) Remove the instrument cover and the high-voltage shield plate.
3) Remove the cover from the fuse holder by pulling out by hand.
4) Remove the fuse and install a new, recommended or equivalent fuse on the holder.
5) Put the fuse cover back on the holder securely.
6) Install the high-voltage shield plate.
It is recommended that the fuse be replaced every two years even if it has not blown.
Shield Plate
Fuse Cover
Fuse Holder
Figure 7-1. How to replace the fuse
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