Cleaning; Replacement Of Parts - Mitsubishi Electric 800 Series Instruction Manual

3.1.5

Cleaning

Always run the inverter in a clean status.
When cleaning the inverter, gently wipe dirty areas with a soft cloth immersed in neutral detergent or ethanol.
NOTE
• Do not use solvent, such as acetone, benzene, toluene and alcohol, as these will cause the inverter surface paint to peel off.
• The display, etc. of the operation panel are vulnerable to detergent and alcohol. Therefore, avoid using them for cleaning.
3.1.6

Replacement of parts

The inverter consists of many electronic parts such as semiconductor devices.
The following parts may deteriorate with age because of their structures or physical characteristics, leading to reduced
performance or fault of the inverter. For preventive maintenance, the parts must be replaced periodically.
Use the life check function as a guidance of parts replacement.
Part name
Cooling fan
Main circuit smoothing capacitor
On-board smoothing capacitor
Fault contact relay
*1 Estimated lifespan for when the yearly average surrounding air temperature is 40°C.
(without corrosive gas, flammable gas, oil mist, dust and dirt etc.)
*2 Output current: 80% of the inverter ND rating
NOTE
• For parts replacement, contact the nearest Mitsubishi FA center.
 Inverter parts life display
The inverter diagnoses the main circuit capacitor, control circuit capacitor, cooling fan, inrush current limit circuit, inverter
module, and fault contact relay by itself and estimates their lives.
The self-diagnostic warning is output when the life span of each part is near its end. It gives an indication of replacement time.
Guideline for life judgment using the life warning output
Part
Main circuit capacitor
Control circuit capacitor
Inrush current limit circuit
Cooling fan
Inverter module
Fault contact relay
P/+
Converter module
D1 D2 D3
R/L1
C
S/L2
T/L3
D4 D5 D6
N/−
Estimated lifespan
10 years
*2
10 years
*2
10 years
—
Judgment level
85% of the initial capacity
Estimated remaining life 10%
Estimated remaining life 10% (Power ON: 100,000 times left)
Less than the specified speed
Estimated remaining life 15%
Estimated remaining life 10%
Inverter module
TR1 TR3 TR5
U
V
W
TR4 TR6 TR2
*1
Replace (as required)
Replace (as required)
Replace the board (as required).
As required
3. Precautions for Maintenance and Inspection
Description
44
3.1 Inspection item
1
2
3
4
5
6
7
8
9
10