Maintenance And Inspection; Periodical Inspection; Part Replacement - YASKAWA VS MINI J7 Series Instruction Manual

All manuals and user guides at all-guides.com

8. Maintenance and Inspection

• Periodical Inspection

Periodically inspect the inverter as described in the following table to prevent accidents
and to ensure high performance with high-reliability.
Location to Check
Terminal, unit mounting
screws, etc.
Cooling fins
Printed circuit board
Power elements and
smoothing capacitor
Cooling fan

• Part Replacement

Inverter's maintenance periods are noted below. Keep them as reference.
Part
Cooling fan
Smoothing capacitor
Breaker relays
Fuses
Electrolytic capacitors on
PCBs
Note: Usage conditions are as follows:
• Ambient temperature: Yearly average of 30°C.
• Load factor: 80% max.
• Operating rate: 12 hours max. per day.
Check For
Connection hardware is properly
seated and securely tightened.
Built up dust, dirt, and debris
Accumulation of conductive
material or oil mist
Abnormal odor or discoloration
Abnormal noise or vibration.
Cumulative operation time
exceeding 20,000 hours.
Part Replacement Guidelines
Standard Replacement Period
2 to 3 years
5 years
—
10 years
5 years
Solution
Properly seat and tighten hardware.
Blow with dry compressed air:
4 4
39.2 X 10 to 58.8 X 10 Pa, 57 to 85 psi (4
2
to 6kg / cm ) pressure.
Blow with dry compressed air:
4 4
39.2 X 10 to 58.8 X 10 Pa, 57 to 85 psi (4
2
to 6kg / cm ) pressure.
If dust or oil cannot be removed, replace the
inverter unit.
Replace the inverter unit.
Replace the cooling fan.
Replacement Method
Replace with new part.
Replace with new part.
(Determine need by inspection).
Determine need by inspection.
Replace with new part.
Replace with new board. (Determine need
by inspection).
99