YASKAWA AC Drive-A1000 Technical Manual page 350

7.2 Inspection
Inspection Area
Cooling Fan,
• Check for abnormal oscillation or unusual noise.
Circulation Fan,
Control Board
• Check for damaged or missing fan blades.
Cooling Fan
Inspect for dust or other foreign material collected on the
Heatsink
surface.
Inspect air intake and exhaust openings. They must be
Air Duct
free from obstruction and properly installed.
• Make sure data appears on the operator properly.
Digital Operator
• Inspect for dust or other foreign material that may have
collected on surrounding components.
350
Inspection Points
Cooling System Periodic Inspection
Display Periodic Inspection
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Corrective Action
• Replace as required.
• Refer to Drive Cooling Fans on page 353
information on cleaning or replacing the fan.
Use dry air to clear away foreign matter. Use a
4
pressure of 39.2 × 10 to 58.8 × 10
2
(4 - 6 kg•cm ).
• Visually inspect the area.
• Clear obstructions and clean air duct as required.
• Contact a Yaskawa representative if there is any
trouble with the display or keypad.
• Clean the digital operator.
Checked
for
4
Pa