Oil aging/fault Display error

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The oil aging sensor signals a fault, indicating that the gear unit oil has degraded to a critical level. Continued operation with aged oil can lead to premature wear of gears and bearings, increased friction, and eventual gear unit failure.

• Severe and prolonged operation beyond the oil's useful life without replacement, leading to critical viscosity loss.
• Significant thermal stress causing rapid oxidation and breakdown of the oil's additives, resulting in acid formation.
• Extensive contamination of the oil (e.g., water ingress >500 ppm), drastically reducing lubrication and protective properties.
• Mechanical wear within the gearbox generating excessive metallic particles (e.g., >100 ppm iron), accelerating oil degradation.
• Failure of the oil aging sensor itself, providing an erroneous critical fault signal (e.g., internal component failure).

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1. 1

   1. Immediately cease operation of the gear unit to prevent further mechanical damage.

2. 2

   2. Completely drain the existing aged oil from the gear unit into an appropriate waste container.

3. 3

   3. Flush the gearbox thoroughly with a compatible flushing oil to remove sludge and contaminants from internal surfaces.

4. 4

   4. Refill the gearbox with new, manufacturer-specified lubricant (e.g., ISO VG 220 synthetic gear oil) to the correct level.

5. 5

   5. After oil change, reset the oil aging sensor or system counter (e.g., via parameter P4-55 in the drive) and verify fault clearance.