Replacing Fan Unit - Mitsubishi Electric MELSERVO J5 Series User Manual

Servo amplifier cooling fan
The cooling fan bearings will reach the end of their service life in 50,000 hours to 70,000 hours. Therefore, the cooling fan
must be replaced after seven to eight years of continuous operation as a guideline. If unusual noise or vibration is found
during inspection, the cooling fan must also be replaced. The service life has been calculated in an environment which
contains no corrosive gas, flammable gas, oil mist, or dust. The average annual ambient temperature was 40 ˚C.
5.3

Replacing fan unit

The internal circuits of the servo amplifier may be damaged by static electricity. Take the following precautions.
• Ensure that the work bench and your body are grounded.
• Do not directly touch conductive areas such as the connector pins and electrical parts.
The fan unit is composed of a cooling fan and its cover.
List of applicable fan units
Servo amplifier
MR-J5-70G_/MR-J5-100G_
MR-J5-200G_/MR-J5-350G_
MR-J5-500G_
MR-J5-700G_
MR-J5W2-44G
MR-J5W3-222G/MR-J5W3-444G
MR-J5W2-77G/MR-J5W2-1010G
MR-J5-200G4_/MR-J5-350G4_
Replacement procedure
For the replacement procedure of fan units, refer to "Fan unit replacement procedure" in the following manual.
MR-J5 User's Manual (Hardware)
Fan units
MR-J5-FAN1
MR-J5-FAN2
MR-J5-FAN3
MR-J5-FAN4
MR-J5W-FAN1
MR-J5W-FAN2
MR-J5W-FAN3
MR-J5-FAN2
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5.3 Replacing fan unit
5