12.3.24.6 General safety notes for changing the oil
NOTICE
Impermissible mixing of oils leads to damage
Impermissible mixing of oils leads to:
• Darkening
• Sediment
• Foam formation
• Change of the viscosity or reduced corrosion protection
• Wear protection.
When changing oil of the same type, the residual volume of oil in the gearbox should be kept
as low as possible. Generally speaking, a small residual volume will cause no particular
problems.
Gear oils of dierent types and by dierent manufacturers must not be mixed. Have the
manufacturer conrm that the new oil is compatible with the remaining volume of used oil.
If very dierent types of oil or oils with very dierent additives are changed, always ush out
the gearbox with the new oil. When changing from mineral oil to polyglycol oil(PG) or vice
versa, it is vital to ush the gearbox twice. All traces of old oil must be completely removed from
the gearbox.
NOTICE
Contaminations of the oil impair the lubricity
Do not mix the gearbox oil with other substances.
Do not ush with paran or other solvents, as traces of these substances will always remain
inside the gearbox.
Note
The oil must be warm because insucient viscosity caused by oil that is too cold impairs correct
emptying.
If necessary, run the gearbox for 15 to 30minutes to become warm.
12.3.24.7 Draining the oil
Observe the symbols in the diagrams of theMounting positions (Page527):
Venting Oil level Oil drain
Additional information on the SIMOGEAR geared motor
12.3Specic data gearbox
SINAMICS G115D Wall Mounted distributed drive
518 Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
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