www.graessner.de
gahe / BA EvoGear status as of July 13, 2021
Page 17 of 22
9.2 During operation monitor the following:
- Operating temperature
When using mineral gear oils (CLP) the operating temperature should not exceed 90°C or only exceed this limit
for a short period of time. When using synthetic gear oils (CLP), an operating temperature of 110°C for a short
period of time is permissible if all sealing rings are made of FKM (fluorocarbon rubber,
“Viton”), whereby it must
be ensured that the shaft seals on the drive shafts are already FKM as standard.
See also Section 11.3 Oil Service Life
- Changing gearbox noises, vibrations.
- Oil leakage
on the housing and on the shaft seal rings.
- Oil level
– for oil level checking, the gearbox must be shut down.
Check oil levels only with the gearbox in a cooled down condition:
•
If an oil inspection glass is available, the oil level shown must be at the centre of the oil inspection
glass.
•
Without an oil inspection glass, the check is carried out on the screw plug, if present, of a vertical
housing surface. The oil level must be in contact with the thread in the housing.
Attention
Insufficient lubrication caused by an excessively low oil level may cause damage
to the geared parts and the bearings!
Carry out a regular oil level check
Warning
:
Serious burns possible on hot surfaces (>55°C)
Wear suitable gloves and additional protective clothing
9.3 Irregularities
In the event of any changes in relation to standard operation, e.g. increased temperatures, noises, vibrations,
the gearbox must be shut down in any case of doubt so that the cause of such changes can be determined.
See Section 10:
“Faults, causes, remedy”.
If necessary, contact our Service Department for consultations.
10. Faults, Causes and Remedies
10.1 General Fault Indications
Se
ctions 5 “Safety Information” and 11 “Inspection and Maintenance” must be observed!
Faults occurring during the warranty period which necessitate a repair of the gearbox must only be corrected by
Service Department employees of Nidec Graessner.
The Nidec Graessner Service Department should also be contacted after the warranty period has expired if
faults occur whose cause cannot be clearly identified.
