Maintenance 11.98
8-2 ENGLISH Siemens AG 6SE7087-6AC85-0AA0
Common Rectifier Operating instructions
8.2 Replacing components
8.2.1 Replacing the fan
WARNING
The fan must only be replaced by qualified personnel.
Owing to the dc link capacitors, a hazardous voltage prevails for a further 5 min.
after deenergisation.
Non-observance of warning notices can result in death, severe personal injury
or considerable property damage.
Sizes B and C
The fan is located on the underside of the unit
♦ Undo both M4 x 49 Torx screws
♦ Remove the protective grille
♦ Pull the fan down and extract the connector
X20
♦ Install a new fan in reverse order
♦ Before commissioning the unit, check that the
fan does not rub and also check the air flow
direction (arrow pointing upward). The air
must be discharged from the unit in the
upward direction.
8.2.2 Replacing modules
WARNING
Modules must only be replaced by qualified persons.
Modules must not be removed or inserted under a live voltage.
Non-observance of warning notices can result in death, severe personal injury
or considerable property damage.
CAUTION
The modules contain electrostatically sensitive devices. You must discharge your own
body before touching an electronic module. This is best done by touching a conductive
earthed object (e.g. a bare metal part of the control cabinet) directly beforehand.
X20
M4 x 49
Torx T20
M4 x 49 / Torx T20
Protective grille
Fan E1
Figure 8.1 Protective grille and fan (24 V) for sizes B and C
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