Yaskawa DSD 406 - Manual (Page 61)

4 Maintenance
57 3/21/96
The “Maintenance” Section describes and illustrates the following procedures:
●
Preventive Maintenance
● PCU Diagnostics
●
Troubleshooting Guide
●
Replacement Procedures for fuses, DSD Drive Control PCB, Armature
Interface PCB, fan, and power supply.
Preventive
Maintenance
Preventive maintenance is primarily a matter of routine inspection and cleaning.
The most important factors are that there is sufficient air flow to cool the drive
and that vibration has not loosened any connections.
The DSD drive is designed to have sufficient air flow for long, reliable
operation. Accumulated dust or dirt can reduce this air flow. Check and clean
all fans, filters (if any), and the air flow across the heat sinks for dust or dirt at
least once every three months. It may be necessary to do this more often if
conditions are harsh dirty filters should be replaced.
If the drive is subjected to vibration, all mounting and electrical connections
should be checked at three month intervals. Any loose hardware should be
tightened.
Preventive Maintenance
WARNING
Hazardous voltages may exist in the drive circuits even
with drive circuit breaker in off position. Never attempt
preventive maintenance unless incoming three-phase and
control power is disconnected and locked out.