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3.2.4 Sleeve bearings
Sleeve bearings are generally delivered without oil !
- generators should be stored also without oil filling
- shaft bearing journals are provided with an anti-corrosion oil film which dissolves in lubrication oil
during operation
- delivered corrosion oil film protection is designed for a storage life of one year under dry condition
- for longer storage bearings have to be disassembled and bearing journals and parts have to be provided
with a long-term protection coat (e.g. Tectyl 511) See operating instructions - Instructions for
Maintenance and Inspection from manufacturer.
3.2.5 Anticorrosion treatment of machined parts and bearings
WARNING
Anticorrosion treatment of slide bearings
Slide bearings must be always treated against corrosion before storage and transportation. In case of
doubts or additional question contact Siemens Electric Machines a.s..
You can find contact in chapter 10.
3.2.6 Condensation
- Generator with protection class IP54 or higher can be provided with condensate drain holes closed by
plastic plugs.
- the environmental conditions (e.g. big temperature fluctuations) may require the removal of these
plugs. The nominal degree of protection will then be only IP44.
- if installed in generator, the anti-condensation heater should be connected to mains (not necessary, if
you have a dry, well ventilated and air-conditioned storage room).
3.3 Storage with shaft in horizontal position
Machine has to stand on the wooden frame in working position and fasten to the frame. Dimensions of
wooden frame must be identical according to foundation dimensions of the machine and must protect
exposed shaft end or protruding parts from direct contact with ground (see dimension drawing).
All metallic parts (exposed shaft areas, feet, flanges) have to be coated by Tectyl 502 without cleaning in case
of using Tectyl 511 as a primary protection. Cleaning of all metallic parts must be done properly in case of
using different anti corrosion agent from Tectyl.
It is necessary to rotate by rotor 1 time per half a year about 90° - 120°. Rotor fixation must be disassembled
before rotor rotation and after that rotor must be fixed again.
CAUTION
Roller bearing lubricant
At storage longer than 3 years, bearing lubricant must be completely replaced – type of lubricant is
according to customer's specification or contact Siemens service. See disassembly procedure of the roller
bearings and lubricant renewal in customer documentation.
Product documentation 1D 3.8.en
Rev. E, 10/13
page 17/42
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