YASKAWA GA700 Technical Manual page 402

7.2 Inspection
Inspection
Inspection Points
Area
• Examine terminals for stripped,
damaged, or loose connections.
General
• Make sure that all terminals have been
correctly tightened.
• Check for odor, discoloration, or rust.
• Make sure that all connections are
correctly fastened.
Circuit Boards
• Make sure that the surface of the
circuit board does not have dust or oil
mist.
Inspection
Inspection Points
Area
• Check for unusual oscillation or
unusual noise.
Cooling Fans
• Check for damaged or missing fan
blades.
• Examine for dust or other unwanted
material collected on the surface.
Heatsink
• Examine for dirt.
Examine air intake, exhaust openings and
Air Duct make sure that there are no unwanted
materials on the surface.
Inspection
Inspection Points
Area
• Make sure that the keypad shows the
data correctly.
General
• Examine for dust or other unwanted
material that collected on components
in the area.
402
Table 7.4 Control Circuit Periodic Inspection Checklist
• Tighten loose screws.
• Replace damaged screws or terminals.
• If terminals are integral to a circuit board, it could be
necessary to replace the control board or the drive.
• Tighten loose connections.
• Use a vacuum cleaner to remove unwanted particles and
dust without touching the components.
• If you cannot remove unwanted particles and dust with a
vacuum cleaner, replace the components.
• Do not use solvents to clean the board.
• The drive does not have many serviceable parts and it could
be necessary to replace the drive.
Table 7.5 Cooling System Periodic Inspection Checklist
Clean or replace the fans as necessary.
Use a vacuum cleaner to remove unwanted particles and dust
without touching the components.
Clear blockages and clean air duct as necessary.
Table 7.6 Keypad Periodic Inspection Checklist
• If you have problems with the display or the keys, contact
Yaskawa or your nearest sales representative.
• Clean the keypad.
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Corrective Action
Corrective Action
Corrective Action
Checked
Checked
Checked