6.2 ROUTINE MAINTENANCE
Keep the gear unit at its maximum efficiency by following the routine maintenance
schedule specified by the Manufacturer.
Good maintenance enables the unit to operate at its maximum performance over a long
service life in compliance with safety regulations.
Lift of checks to perform
We recommend keeping a checklist of inspections so that any changes in individual control
parameters can be identified rapidly and easily.
The times indicated in the chart vary significantly in relation to the conditions of use of
the gear unit and must be construed as valid in the absence of other types of problems.
Inspection parameter Inspection interval
first oil change after commissioning 300 h
future oil changes see chart
oil temperature 24 h
bearings temperature 24 h
oil pressure 24 h
noise, vibration 24 h
tightening of anchor bolts 170 h ... 720 h
gear unit external conditions (fouling, oil deposits) 170 h ... 720 h
oil leaks, external seals and gaskets 720 h
oil level 720 h
oil filter contamination indicator 2200 h
breather filter 2200 h
condition of Drywell oil 4000 h
condition of torque arm polymer bushes (aging, cracking) 3000 h
condition of gear unit oil (possible presence of contaminants,
especially water)
2000 h ... 9000 h
internal conditions, operation of the gear unit and oil circulation
system
9000 h ... 18000 h
internal cleanliness of the cooling coil and possible presence of
deposits
9000 h ... 18000 h
alignment of gear unit shafts with respect to connected machine
shafts
9000 h ... 18000 h
condition of gear tooth flanks at each oil change
operation of the oil circulation system and control devices at each oil change
cleanliness of fan, fan cowl, and gear unit casing at each oil change
Depending on the temperature reached by the lubricant, it should be replaced at the intervals
indicated in table below:
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