Siemens SIMOTICS A 1FU8, Operating Instructions Manual

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Maintenance
9.8 Corrective maintenance
1FU8
90
Operating Instructions, 02/2016, 5 610 70000 02 000
9.8.4.4 Mounting fans
● Take care not to damage the snapping mechanisms on fans that are equipped with these.
● To ensure this, the fans should be heated to a temperature of approximately 50 °C
around the area of the hub.
● If any damage is caused, request new parts.
9.8.4.5 Reassembly: Miscellaneous information
● Position all rating and supplementary plates as in the original state.
● Where relevant, fix electric cables.
● Check the tightening torques of all screws, as well as those of screws that have not been
released.
9.8.5 Screw lock washers
Nuts or bolts that are mounted together with locking, resilient and/or force-distributing
elements (e.g., safety plates, spring-lock washers, etc.) must be refitted together with
identical, fully functional elements.
Locking and sealing elements must always be replaced!
9.8.6 Electrical connections - Termincal board connections
Table 9- 5 Tightening torques for electrical connections on the terminal board
Thread ∅ M 3,5 M 4 M 5 M 6 M 8 M 10 M 12 M 16
Nm min 0,8 0,8 1,8 2,7 5,5 9 14 27
Max. 1,2 1,2 2,5 4 8 13 20 40