Checking The Oil Quality; Changing The Oil - Siemens SIMOTICS S-1FG1 Operating Instructions Manual

11.2.3.3

Checking the oil quality

You detect changes to the oil by its appearance.
Fresh clean oil is clear, has a typical smell and a color specific to the particular product.
Clouding or a flocculent appearance indicates water and / or contamination.
A dark or black color indicates residue, serious thermal decomposition or contamination.
Procedure
1. Allow the geared motor to run for a short time. Wear and contaminant particles are visible in
the oil shortly after shutting down.
2. Bring the converter into a no-voltage condition.
3. Unscrew the vent plug or oil level plug.
4. Remove some oil, using a suction pump and a flexible hose, for example.
5. Check the state of the sealing ring on the sealing element. When required, replace the sealing
ring.
6. Seal the gearbox with the sealing element.
7. Check the oil for the changes described above. Change the oil immediately if you determine
any changes, see Chapter "Changing the oil (Page 173)".
❒
11.2.3.4

Changing the oil

Safety instructions
NOTICE
Gearbox damage due to mixing of different oils
Mixing different oils can damage the gearbox by forming deposits or foam,
changing the viscosity, or reducing corrosion protection.
• Use gearbox oils of the same type and from the same manufacturer. If you use other oils,
• Change the oil completely.
• If you use other oil types, flush the gearbox with the new oil.
• Avoid contaminating the new oil.
SIMOTICS S-1FG1 servo geared motor
Operating Instructions, 12/2022, A5E47360747B/RS-AC
Vent plug marking
have the manufacturer confirm that the new oil is compatible with the remaining volume
of used oil.
Service and maintenance
11.2 Inspection and maintenance
Oil level plug marking
173