8 Maintenance and servicing information
BU 0540 EN-1516 57
8 Maintenance and servicing information
Pos: 51 3 /Anlei tung en/El ektr onik/FU und Star ter/9 . Wart ungs- u nd Ser vicehi nwei se/War tungs hinw eise [SK 1x0E, SK 2xxE , SK 5xxE] @ 2\mod_1347439895316_388.docx @ 45991 @ 255 @ 1
8.1 Maintenance Instructions
NORD frequency converters are maintenance free provided that they are properly used (please see
chapter 7.1 "General Data SK 500E").
Dusty environments
If the device is being used in a dusty environment, the cooling-vane surfaces should be regularly
cleaned with compressed air.
Long-term storage
The device must be regularly connected to the supply network for at least 60 min.
If this is not carried out, there is a danger that the device may be destroyed.
If a device is to be stored for longer than one year, it must be recommissioned with the aid of an
adjustable transformer before normal connection to the mains.
Long-term storage for 1 - 3 years
– 30 min with 25 % mains voltage
– 30 min with 50 % mains voltage
– 30 min with 75 % mains voltage
– 30 min with 100 % mains voltage
Long-term storage for >3 years or if the storage period is not known:
– 120 min with 25 % mains voltage
– 120 min with 50 % mains voltage
– 120 min with 75 % mains voltage
– 120 min with 100 % mains voltage
The device must not be subject to load during the regeneration process.
After the regeneration process, the regulations described above apply again (at least 60 min on the
mains 1x per year).
Pos: 51 4 /Anlei tung en/El ektr onik/FU und Star ter/9 . Wart ungs- u nd Ser vicehi nwei se/War tungs hinw eise - Inf or mat ion SK 5 x5E [SK 5x xE - BG1- 4] @ 5\mod_1399536297600_388.docx @ 131807 @ @ 1
Control voltage with SK 5x5E
With devices of type SK 5x5E, a 24 V control voltage supply must be provided for Sizes 1 – 4 in order to make
the regeneration process possible.
Pos: 51 5 /Anlei tung en/El ektr onik/FU und Star ter/9 . Wart ungs- u nd Ser vic ehin wei se/S er vice hinw eis e [S K 1 xxE , SK 2xxE, SK 5xxE] @ 0\mod_1328189697671_388.docx @ 14558 @ 2 @ 1
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