nord B 1050, Инструкция по эксплуатации и сборке

Страница: 68 / 112

Industrial gear units – Operating and Assembly Instructions
68 B 1050 en-4419
5.2 Service and Maintenance Work
Visual inspection for leaks
The gear unit must be checked for leaks. Attention should be paid to escaping gear oil and traces of
oil on the exterior or underneath the gear unit. In particular, the shaft sealing rings, cover caps, screw
fittings, hoses and housing joints should be checked.
Information
Shaft sealing rings are components with a limited life and are subject to wear and ageing. The service
life of shaft sealing rings depends on various ambient conditions. Temperature, light (especially UV
light), ozone and other gases and liquids affect the ageing process of shaft sealing rings. Some of
these influences may change the physical or chemical properties of the shaft sealing rings and result
in a significant reduction of their service life. Foreign substances (e.g. dust, sludge, sand, metallic
particles) and excess temperature (excessive speed or external heating) accelerate the wear of the
sealing lip. These sealing lips are made of an elastomer material and 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 (please
see chapter 7.7 "Leakage and leak-tightness").
If leaks are suspected, the gear unit should be cleaned, the oil level checked and checked again for
leaks after approx. 24 hours. If a leak is confirmed (dripped oil), the gear unit must be repaired
immediately. Please contact the NORD service department.
Check for running noises
If the gear unit produces unusual running noises or vibrations, this could indicate damage to the gear
unit. In this case the gear unit must be repaired immediately. Please contact the NORD Service
department.
5.2.1 Gear unit cooling with fan (Option: FAN)
The inlet and outlet openings on the fan cover and the fan wheel must be kept clean.
Before re-commissioning, observe the information in Section 4.4 "Gear unit cooling with fan( Option:
FAN)".
5.2.2 Heat exchanger (option: CS2)
The heat exchanger of the oil/air cooling unit (option CS2) must be cleaned regularly according to the
documentation of the product manufacturer in order to maintain the efficiency of the unit.