Helios SilentBox SB EC Serie Notice De Montage Et D'utilisation page 24

Installation and Operating Instructions
EN
CHAPTER 5
USER MAINTENANCE
m
CAUTION
SilentBox® SB EC ... EC Centrifugal Fan Boxes
5�1 Opening the casing
m
CAUTION!
Risk of injury when opening the casing due to the hinged/removeable motor impeller unit!
Do not stand in swing-out/opening area!
SB EC 125�� - SB EC 160��
1� Disconnect the unit from the power supply and secure it against switching on again!
2. Loosen snap locks and remove cover (Fig. 2).
3. Then loosen the fixing screws on the motor bedplate (Fig. 3) and swing out motor impeller (type-dependent) (Fig. 4).
Fig� 2
SB EC 200�� - SB EC 355��
1� Disconnect unit from the power supply and secure it against being switched on again!
2. Loosen the bolts on the hatch (1), 2 pcs Torx T25 M5x10. (View A)
3. Open the cover. (View B)
4. Loosen the two screws (3) on the motor bracket. (View C)
5. Tilt the bracket (4) for access to the fan wheel. (View D)
View A
View C
Fig� 4
Fig� 3
Hinged
motor impeller unit
View B
1
View D
3
6
4