Yaskawa iQpump Drive User Manual - Manual (Page 161)

7.2 Preventive Maintenance
YASKAWA TM.iQp.01 iQpump Drive User Manual 161
7.2 Preventive Maintenance
Table 7.3 Preventive Maintenance
If the iQpump drive is used under the following conditions, it may be necessary to inspect more often:
• High ambient temperatures, humidity or altitudes above 3,300 feet
• Frequent starting and stopping
• Fluctuations of the AC power supply or load
• Excessive vibration and/or shock loading
• Poor environment, including dust, metal particles, salt, sulfuric acid, chlorine
Inspection Points Item Check Points
Every 3-6
Months
Yearly
General
Environment
Ambient Temperature
Humidity
Dust
Harmful Gas
Oil Mist
X
X
X
X
X
Equipment Abnormal vibration or noise X
AC Power Supply Main circuit & control voltage X
AC Power Circuit &
Devices
Conductors & Wire
Connections
Loose lugs, screws & wires
Hot spots on parts
Corrosion
Bent conductors
Breakage, cracking or discoloration
Check spacing
X
X
X
X
X
X
Transformers & Reactors Discoloration or Noise X
Terminal Blocks Loose, damaged X
DC Bus Capacitors
Leakage
Ruptures, broken, expansion
Capacitance & insulation resistance
X
X
X
Relays & Contactors
Noisy
Contact discoloration
X
X
Soft Charge Resistors
Cracked
Discoloration
X
X
Control Circuits Operation
Speed reference voltage/current
I/O contact operation
X
X
Cooling System Cooling Fans/Fins & Heatsink
Abnormal fan noise
Loose connectors
Free of accumulation
X
X
X
Keypad/Diplay Digital Operator
LEDs
Monitor display values
Key functionality
Clean
X
X
X
X