Mitsubishi Electronics IB-1500193(ENG)-D ユーザーズマニュアル

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A guide to the part replacement cycle is shown below. Note that these will differ according to the working 

conditions or environmental conditions, so replace the parts if any abnormality is found. Contact Mitsubishi 

branch or your dealer for repairs or part replacements.

[1] Power smoothing capacitor:

The characteristics of the power smoothing capacitor will deteriorate due to the effect of ripple currents, 

etc. The capacitor life is greatly affected by the ambient temperature and working conditions. However, 

when used continuously in a normal air-conditioned environment, the service life will be ten years.

[2] Relays:

Contact faults will occur due to contact wear caused by the switching current. The service life will be 

reached after 100,000 cumulative switches (switching life) although this will differ according to the 

power capacity.

[3] Servomotor bearings:

The motor bearings should be replaced after 20,000 to 30,000 hours of rated load operation at the rated 

speed. This will be affected by the operation state, but the bearings must be replaced when any 

abnormal noise or vibration is found in the inspections.

[4] Servomotor oil seal, V-ring:

These parts should be replaced after 5,000 hours of operation at the rated speed. This will be affected 

by the operation state, but these parts must be replaced if oil leaks, etc., are found in the inspections.

10 years

The standard replacement time is 
a reference. Even if the standard 
replacement time is not reached, 
the part must be replaced if any 
abnormality is found.

10,000 to 30,000 hours (2 to 3 years)

10,000 hours 

(for MR-J3BAT / MDS-BTBOX-36)

20,000 to 30,000 hours

20,000 to 30,000 hours

5,000 hours