Siemens SIMOTICS 1LA, Краткое руководство по эксплуатации

Страница: 58 / 166

22
Check the condition of the temperature indicator previously installed on the gear unit during
commissioning.
Example:
Also check that the temperature is not excessive around the gear unit’s bearings.
•
Check the oil levels with reference to the tables and diagrams given in Annexes 1 and 2.
•
Check that there are no signs of lubricant leaks near to the gear unit.
•
If any anomalies are found, identify their cause, repair the unit accordingly and top up
the lubricant before putting the gear unit back into service
.
Every 3000 h of operation:
•
For gear units with torque arm, check that the polymer bushings are not aged or damaged. If
they are at all compromised, replace with original spare parts.
Every 5000 h of operation:
•
Change the synthetic oil and bearing grease if the gear unit is not life-time lubricated.
•
Replace all externally accessible seal rings unless this has already been done as a result of
problems occurring before the scheduled maintenance deadline.
Every 5000 h of operation at rated torque:
(The minimum overhaul interval indicated here may increase considerably depending on actual
conditions of service; see table (A5)).
•
Overhaul the gear unit, unless this has already been done as a result of problems occurring
before the specified deadline.
(An overhaul involves the replacement of bearings and/or other mechanical components which
have worn to such an extent as to compromise the operation of the gear unit).
M
n2
= nominal torque at output shaft
M
r2
= required torque at output shaft
266°F
1 3 0°C
266°F
1 3 0°C
Limit temperature exceeded Limit temperature NOT exceeded
Interval hours
1.0 5000
1.25 10000
1.5 17000
1.75 27000
2.0 40000
(A5)
M
M
n2
r2