BA 9137 en 12/2015
7.3.1.2 Renewal of the gear unit interior preservation with "Castrol Corrosion Inhibitor N 213"
For prolonging the interior preservation, the VCI-gas discharging fluid "Castrol Corrosion Inhibitor N 213"
is recommended.
For sealing the input shaft, a sealing cap (can be obtained from Siemens) must be mounted and tightened
on the gear unit for sealing the input shaft.
Note
Oil already filled in does not have to be drained.
CAUTION
Risk of injury
Risk of injury to eyes or hands from chemically aggressive operating substances.
Wear suitable protection glasses and protection gloves.
Remove any spilled oil immediately using an oil binding agent.
Note
In this renewal of the gear unit interior preservation, it must be ensured that the ambient and gear unit
temperature is above 5 °C during filling.
The following procedure is recommended:
•
Seal input shaft with a sealing cap.
•
Seal bottom and top oil drain of the sealing cap with a screw plug.
•
Seal the pressure, suction and/or return lines with blind flanges.
•
Fit screw plugs on the oil drain cocks on the gear unit and the tilting pad thrust bearing chamber and
seal them.
•
Seal input flange with round cord hollow profile (2) (see Figure 5 in item 5.2) on the labyrinth. Mask the
labyrinth seal airtight.
•
Fill gear unit with "Castrol Corrosion Inhibitor N 213" through the openings of the air filters.
Filling quantity: 1 litre per cubic metre of the entire free interior volume of the gear unit (to be enquired
from Siemens). The interior volume of the gear unit can be ascertained in approximation also by means
of the length x width x height of the gear unit.
•
Replace the air filters of the gear unit for screw plugs (replace them again at start-up).
NOTICE
Property damage
Corrosion is possible when the gear unit is opened for too long.
Close the gear unit airtight again, at the latest one hour after opening.
When opening the gear unit multiple times, "Castrol Corrosion Inhibitor N 213" has to be refilled.
The following table shows the durability period of the gear unit interior preservation with
"Castrol Corrosion Inhibitor N 213" depending on the packaging and setup or storage site.
The definition of climatic zones can be found in item 4.4.2.1.
Note
If the gear unit is transported after the preservation was renewed, the durability period according to
Table 3 in item 4.4.2.1 has to be observed.
