YASKAWA AQ6370B - Replacing Fuses

10-7
IM 735302-01E
Maintenance
1
2
3
4
5
6
7
8
9
10
11
App
Index
10.6 Replacing Fuses
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.
WARNING
● 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.
Procedure
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.