Cleaning; Lifespan - Mitsubishi Electric FR-CS84-012 Instruction Manual

7.1.5

Cleaning

Always run the inverter in a clean state.
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.
• As the display of the PU, etc. is vulnerable to detergent and alcohol, avoid using them for cleaning.
7.1.6

Lifespan

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.
Part name
Cooling fan
Main circuit smoothing capacitor
On-board smoothing capacitor
Relays
*1 Estimated lifespan when the yearly average surrounding air temperature is 40°C
(without corrosive gas, flammable gas, oil mist, dust or dirt etc.).
*2 Output current: 80% of the inverter rating
NOTE
• For parts replacement, contact the nearest Mitsubishi Electric FA center.
 Smoothing capacitors
A large-capacity aluminum electrolytic capacitor is used for smoothing in the main circuit DC section, and an aluminum
electrolytic capacitor is used for stabilizing the control power in the control circuit. Their characteristics are deteriorated by the
adverse effects of ripple currents, etc. The replacement intervals greatly vary with the surrounding air temperature and
operating conditions.
The appearance criteria for inspection are as follows.
• Case: Check the side and bottom faces for expansion.
• Sealing plate: Check for a remarkable warp and extreme crack.
• Others: Check for external crack, discoloration, and liquid leakage.
*1
Estimated lifespan
5 years.
*2
5 years.
*2
5 years.
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7. PRECAUTIONS FOR MAINTENANCE AND INSPECTION
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7.1 Inspection item