Omron JZA User Manual page 145

Inspection Area
• Inspect equipment for discoloration from
overheating or deterioration.
• Inspect for damaged or deformed parts.
General
• Inspect for dirt, foreign particles, or dust collection
on components.
• Inspect wiring and connections for discoloration,
Conductors and
damage, or heat stress.
Wiring
• Inspect wire insulation and shielding for wear.
• Inspect terminals for stripped, damaged, or loose
Terminals
connections.
• Inspect contactors and relays for excessive noise
Relays and during operation.
Contactors • Inspect coils for signs of overheating such as melted
or cracked insulation.
• Inspect for discoloration of heat stress on or around
Braking Resistors
resistors.
• Inspect terminals for stripped, damaged or loose
General connections.
• Check for tightness.
• Make sure the LED lights correctly.
LEDs • Inspect for dust or other foreign material that may
have collected on surrounding components.
• Check for abnormal oscillation or unusual noise.
Cooling Fan
• Check for damaged or missing fan blades.
• Inspect for dust or other foreign material collected
Heatsink
on the surface.
• Inspect air intake and exhaust openings. They must
Air Duct
be free from obstruction and properly installed.
Operation Check • Check for increased vibration or abnormal noise.
Note: Periodic inspections should be performed every one or two years. The drive, however, may require more frequent inspection due to poor
environments or rigorous use.
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
Table 7.2 Periodic Inspection Checklist
Inspection Points
Main Circuit Periodic Inspection
Control Circuit Periodic Inspection
LED Periodic Inspection
Cooling System Periodic Inspection
Motor Periodic Inspection
Corrective Action
• Replace damaged components as required.
• The drive has few serviceable parts and may
require complete drive replacement.
• Inspect enclosure door seal if present. Replace
components if cleaning is not possible.
• Use dry air to clear away foreign matter. Use a
pressure of:
4 4
39.2 x 10 to 58.8 x 10 Pa (4 - 6 kg •cm
• Repair or replace damaged wiring.
• Tighten loose screws and replace damaged
screws or terminals.
• Check coil voltage for over or under voltage
conditions.
• Replace damaged removable relays contactors or
circuit board.
• Minor discoloration may be acceptable.
• If discoloration exists check for loose
connections.
• Tighten loose screws and replace damaged
screws or terminals.
• If terminals are integral to a circuit board then
board or drive replacement may be required.
• Contact your OYMC representative if there is
any trouble with the LED or keypad.
• Clean the LED.
• Replace as required.
• Refer to Drive Cooling Fans on page 145
information on cleaning or replacing the cooling
fan.
• Use dry air to clear away foreign matter.
• Use a pressure of 39.2 x 10 4
to 58.8 x 10
2
- 6 kg•cm ).
• Visually inspect the area.
• Clear obstructions and clean air duct as required.
• Stop the motor and contact qualified
maintenance personnel as required.
7.2 Inspection
Checked
2
).
for
4
Pa (4
7
143