Commissioning
10
MRH 06.04.2017
WARNING
Hazard from electrical voltage!
Electrical connection only by a trained electrician rsp. trained and instructed qualified personnel!
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!
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disconnect from the power supply (all-pole),
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prevent switching on again,
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test absence of voltage,
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earthing and short-circuiting,
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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. Drill a hole into the handle in the “on”
position and provide with a padlock (not supplied with the fan). See Appendix 3.
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. See also specific fan instruc-
tions.
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.
The safety devices have been fitted (protection against contact).
The protective conductor and external earth conductor have been connected.
The thermal protection is properly connected to the motor protective device:
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the motor protective device is functional;
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the thermal protection is functional.
The cable glands are tight.
Provided mains connection complies with the data on the nameplate.
The current (from the nameplate) does not exceed the mains data.
Service switch of the fan is in off position and the actuator`s service switch is in (middle) position 0.
The device is electrically connected to power supply.
Attached instructions of the fan and actuator have been understood.
