Nord Drivesystems B 1050 Series, Operating And Assembly Instructions Manual, Page: 65 / 112

4 Commissioning
B 1050 en-1819 65
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4.10 Checking the gear unit
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NOTICE!
Gear unit damage
The gear unit may be damaged by overheating.
• The drive must be shut down immediately if abnormalities are detected in the inspections described below.
Contact the NORD Service department for advice.
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During commissioning of the gear unit a test run should be carried out in order to detect any problems
prior to continuous operation.
During a test run under maximum load, the gear unit should be checked for:
• Unusual noises, such as grinding, knocking or rubbing noises
• Unusual vibrations, oscillations or other movements
• Production of steam or smoke
After the test run, the gear unit should be checked for:
• Leaks
• Slippage of the shrink disks:
For this, the cover should be removed and a check carried out as to whether the marking (3.10.2
"Hollow shaft with shrink disc element (Option: S)") shows a relative movement of the hollow shaft
of the gear unit and the machine shaft. After this, the cover must be re-fitted (3.21 "Covering cap
(Option: H, H66, FAN, MF.., MS…)").
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Information
Apparent leakage
Shaft sealing rings are rubbing seals and have sealing lips made from an elastomer material. These sealing lips
are lubricated with a special grease at the factory. This reduces the wear due to their function and ensures a long
service life. An oil film in the region of the rubbing sealing lip is therefore normal and is not due to leakage.
See also Section 7.7 "Leakage and leak-tightness"
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Information
Apparent leakage
Taconite seals have a grease filling to seal the gear unit against dirt and other contaminants. During continuous
operation of the gear unit and the associated heating, grease may drip from the area of the Taconite seal. This is
normal and is not due to a leak.
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