Maintenance
9.5 Corrective maintenance
Smoke extraction motors
Operating Instructions, 03/2016, 5 610 80000 40 018
81
9.5.5.4
Fitting bearings for smoke extraction motors
Sealing the bearings
Note the following details:
●
V rings are used on the shaft to seal the bearings, V rings on the shaft
●
Use the specified bearings
●
Ensure that the bearing sealing disks are in the correct position
●
Only use the original replacement bearings from the manufacturer.
●
Insert the elements for bearing preloading at the correct end
●
Fixed bearings can have a locking ring or bearing cover
Table 9- 5
Mounting dimension "x" of V rings
Frame size
X
[mm]
100 ... 112
6 ±0,8
132 ... 225
7 ±1
225
(4 ... 8-pole)
11 ±1
250 ... 315
(4 ... 8-pole)
13,5 ±1,2
225
(2-pole)
11 ±1
250 ... 315
(2-pole)
13,5 ±1,2
9.5.5.5
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.
9.5.5.6
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.
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