Tightening torques for the metal and plastic cable glands for the direct attachment to the machine
and other glands (such as reducers) shall be in accordance with
Table 5
.
Cable gland
Metal ±10% Nm
Plastic ±10% Nm
M16 x 1,5
10
2
M20 x 1,5
12
4
M25 x 1,5
M32 x 1,5
18
6
M40 x 1,5
M50 x 1,5
20
M60 x 1,5
Table 5.
Tightening torques for cable glands.
7. Maintenance
Maintenance of the motor may only be conducted considering the safety instructions in 1 – 6. Careful
and regular maintenance, inspections and revisions are necessary in order to detect and correct any
faults in good time before damage can occur. General deadlines are given in the
Table 6
below (periods
should be adapted to the local conditions, such as pollution, load etc.):
Function
Time interval
Periods
Initial inspection
After approx. 500h
At the latest after ½ year
Control of the airways and
surface of the motor
Depending on local conditions
Re-lubrication
Acc.
Table 7
or nameplate
Once a year
Main inspection
10.000 h
Once a year
Table 6
. Notifiable maintenance and inspections.
A grease quality allows the operation of the engine of the motors of 20.000 h without renewal of the
rolling bearing grease under normal load conditions and under normal environment conditions. The
condition of grease should however be controlled even during this period. The specified life
expectancy of bearings applies only for operation with nominal speed and bearing operating
temperature of 80°C (ambient temperature 20°C). When operating with inverter or increased ambient
temperatures, the specified lubrication periods must be reduced by 25% as a result of the higher
heating of the motor. If the nominal speed is exceeded during the operation of the motor with
inverter, the re-lubrication periods are reduced in the reverse proportion to the increase in the speed.
Re-lubricate the bearings after thorough cleaning with appropriate solvents.
The greases with the same oil base and the same thickener must be used. The grease
quantity indicated on the nameplate must be observed.
Approximately twice the quantity is
required for the first relubrication, as the grease lubrication tubes are still empty. The used old
grease must be disposed of after 3 relubrication operations.
Caution: when operating over the
rated speed or at increased ambient
temperatures, the specified
lubrication periods must be reduced
by 25%.
SEVA-tec GmbH - Lether Gerwerbestrasse 10 - 26197 Ahlhorn - www.seva-tec.de
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