Yaskawa DSD 406 - Manual (Page 81)

4 Maintenance
77 Replacing Fuses
3/21/96
If you suspect that one of the fuses, the DSD Drive Control PCB, the fan, or the
power supply needs to be replaced, follow the procedures in this section.
WARNING
Before performing any maintenance, disconnect all input
and output power from the DSD drive.
To replace one or more fuses, follow this procedure:
❏ Disconnect all input and output power to the DSD drive.
❏ Pull the handle on the right side of the DSD Drive Control PCB (see Figure
11) towards you and swing the top chassis clear of the lower chassis.
❏ Remove both 1/4-20 hex nuts from the suspected fuse(s) (see Figure 10).
❏ Remove the lockwashers and flat washers (see Figure 10).
❏ Apply Penetrox or equivalent Copolymer oil (PN# 05G10017-001) to the
surfaces between the fuses and the bus bar to ensure a good electrical
connection.
❏ Replace flat washers, lockwashers, and hand tighten 1/4-20 nuts (see
Figure 10.)
❏ Torque 1/4-20 nuts to 70 inch pounds.
❏ Close top chassis.
❏ Reconnect input and output power.
❏ See Section 3, Operation, for start-up procedure.
Replacing
Fuse(s)