IMO DVV

Commissioning
10 DVV 16.08.2021
only certified cable. The electric cable must not be in contact with or be fastened to the casing of the fan (F400, F600
only, high temperature!). Connecting possibility see Appendix 5. Electrical data on the fan nameplate must comply
with the provided mains connection. Equivalent motors from different suppliers may have slightly different nominal
data than in catalogue.
NOTE
 Motors have serial built-in PTC. More than two PTC chains may not be switched in series, as this can
lead to undefined cut-outs.
 Maximum check voltage of PTC is 2,5 V (to reduce influence on the result of measurement).
 The wiring diagram see Appendix 4.
 Motor protection must be provided by the installer.
WARNING
Hazard from electrical voltage!
 Electrical connection only by a trained electrician respectively trained and instructed qualified person-
nel!
 Electrical connection in accordance with the valid regulations.
 Prevent the ingress of water into the connection box.
 Observe 5 safety rules for the electrical expert!
- disconnect from the power supply (all-pole),
- prevent switching on again,
- test absence of voltage,
- earthing and short-circuiting,
- protect adjacent live parts by covers and barriers and fit a suitable warning notice.
Connect the cable according to wiring diagram.
Tighten the nuts of cable glands well to achieve IP68 protection.
Check, if the cover of service switch is uniformly fastened. If there is a danger of unintended switch off of the
service switch, it should be locked to guarantee operation in fire case (F400, F600). Drill a hole into the handle
in the “on” position and provide with a padlock (not supplied with the fan). See Appendix 4.
Place the supply cable.
7.1 Residual current circuit breaker
Use universal RCDs type B or B+ in case of speed control with frequency converter.
7.2 Connection of thermal protection
CAUTION
Property damage as a result of motor overheating
 The motor can overheat and be destroyed if the PTC not been connected.
 PTC always connect to a motor protective device!
8 Commissioning
8.1 Preconditions
 Mounting and electrical connection have been correctly performed.
 Installation residuals and foreign objects have been removed from the fan and ducts.
 Inlet and outlet are free.