Maintenance 7 - 3
Preventive Maintenance
If the 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
Table 7.3 Preventive Maintenance
Inspection Points
Item
Check Points
Every 3-6 Months
Yearly
General
Environment
Ambient Temperature
Humidity
Dust
Harmful Gas
Oil Mist
9
9
9
9
9
Equipment
Abnormal vibration or noise
9
AC Power Supply
Main circuit & control voltage
9
AC Power Circuit &
Devices
Conductors & Wire
Connections
Loose lugs, screws & wires
Hot spots on parts
Corrosion
Bent conductors
Breakage, cracking or discoloration
Check spacing
9
9
9
9
9
9
Transformers & Reactors
Discoloration or Noise
9
Terminal Blocks
Loose, damaged
9
DC Bus Capacitors
Leakage
Ruptures, broken, expansion
Capacitance & insulation resistance
9
9
9
Relays & Contactors
Noisy
Contact discoloration
9
9
Soft Charge Resistors
Cracked
Discoloration
9
9
Control Circuits
Operation
Speed reference voltage/current
I/O contact operation
Relay logic
9
9
Cooling System
Cooling Fans/Fins & Heatsink
Abnormal fan noise
Loose connectors
Free of accumulation
9
9
9
Keypad/Front Panel
Display
Digital Operator and
Front Panel
LEDs
Monitor display values
Key and selector switch functionality
Clean
9
9
9
9
Summary of Contents for E7LBA002
Page 1: ...E7L Drive Bypass Technical Manual Model E7L Document Number TM E7L 01 ...
Page 8: ...Introduction vi Notes ...
Page 12: ...Table of Contents x Notes ...
Page 54: ...Electrical Installation 2 22 Wiring Diagram ...
Page 55: ...Electrical Installation 2 23 ...
Page 87: ...Start Up and Operation 4 9 Notes ...
Page 202: ...Diagnostic Troubleshooting 6 30 Notes ...
Page 248: ...Capacity Related Parameters B 6 Notes ...
Page 279: ...Communications D 27 Note ...
Page 280: ...Communications D 28 ...
Page 292: ...Spare Parts F 6 ...
Page 304: ...Index 12 ...
Page 305: ......