Checking The Oil Level Using The Oil Dipstick (Optional); Checking The Oil Quality - Siemens SINAMICS G115D Operating Instructions Manual

Additional information on the SIMOGEAR geared motor
11.3 Specific data gearbox
11.3.24.4

Checking the oil level using the oil dipstick (optional)

In the M4 mounting position for ZF/EF helical gearboxes, the oil level can be checked with an
oil dipstick.
Figure 11-33 Checking the oil level using the oil dipstick
To check the oil level, push the oil dipstick ① into the hole but do not screw it in.
The oil level must be between the lower ② and upper ③ marks on the oil dipstick ①.
After checking, screw the oil dipstick ① in again hand-tight. The oil dipstick ① can remain
screwed in during operation.
Rectify the oil level if necessary and check it again.
11.3.24.5

Checking the oil quality

Visible signs show effects on the oil. Fresh oil is clear to the eye, and has a typical smell and a
specific product color. Clouding or a flocculent appearance indicates water and / or
contamination. A dark or black color indicates residue, serious thermal decomposition or
contamination.
Observe the symbols in the diagrams of the Mounting positions (Page 482):
Venting
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. Switch off the power supply to the drive unit.
3. Unscrew the sealing element at one of the points marked with the symbols listed above.
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 abnormalities. Change the oil immediately if you determine any
abnormalities, see General safety notes for changing the oil (Page 473).
You have now checked the oil quality.
472
Oil level
Operating Instructions, 12/2020, FW V4.7 SP13, A5E48681219B-002
SINAMICS G115D distributed drive