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10.6 Replacing Fuses
Procedure
IM 735302-01E
Fuses come standard and are already installed in the instrument upon receipt.
If you need to replace a fuse due to an equipment failure, first determine the cause of the
failure and solve the problem before replacing the fuse.
The AQ6370B uses ordinary fusing-type 5-amp fuses with a 100–120 V power supply,
and use time lag-type 3.15-amp fuses with a 200–240 V power supply.
● When replacing fuses, turn OFF the POWER switch on the rear panel and
remove the power cord. Replacing a fuse while the power is on may result in
injury due to electric shock.
● After replacing a fuse, perform the protective grounding procedures before
turning the power back on. Turning the power on without a protective ground
may result in injury due to electric shock.
● Make sure the AC supply voltage is at the proper level before turning the MAIN
POWER switch on. If the AC supply voltage is not at the proper level, turning the
power switch on may damage the inside of the instrument.
● After fixing the damage and replacing the fuse, if the fuse blows again, it could
indicate additional internal damage. Please contact your nearest Yokogawa
representative for repairs.
1.
Pull the AC power supply fuse holder on the rear panel of the instrument toward
you. When you pull the holder out far enough to see the fuse, you can pull it
down.
2.
Replace the old fuse with a new one.
3.
Push the fuse holder back in until flush with the AC power connector face.
If the fuse holder is not pushed in sufficiently, electrical contact may not be made completely
or at all, which can cause heating or tripping of the fuse.
Note
Be careful not to pull on the fuse holder with excessive force.
WARNING
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App
Index
10-7
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