User guide

IM 12D08E02-01E
Maintenance 7-2
7-3. Fuse Replacement
This section describes how to replace the power supply fuse.
• Use only a fuse of the specified current, voltage and type ratings to prevent fire.
• Power to the instrument must be turned off at the external breaker before replacing the fuse. After
replacing the fuse, install a high-voltage shield plate before turning the power on.
• Do not short circuit the fuse holder.
Specified Ratings of the Power Supply Fuse
The power supply fuse (recommended fuse) used in the DC402G is as follows.
• 115 V AC version
Maximum rated voltage: 250 V
Maximum rated current: 200 mA
Compliance: UL, CSA, VDE, Japan’s Electrical Appliance and material Safety Law
Part number: A1105EF
• 230 V AC version
Maximum rated voltage: 250 V
Maximum rated current: 100 mA
Compliance: UL, CSA, VDE, Japan’s Electrical Appliance and material Safety Law
Part number: A1103EF
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
DANGER