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Green tick: The grease condition is within the permissible limits and it is fit for further use.
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Yellow question mark: The quality of the grease is within tolerable limits but shows deviations from the ideal condition. Machine inspection or general monitoring is strongly recommended. A recommendation for further action, e.g. a repeated analysis, is also made.
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Red "X": The grease is no longer fit for use. A grease change should be performed.
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