EN
Installation, operating and maintenance instructions
DVN...D.F4
Bushing size
Torque table
Bushing size
1210
2012
2517
Screw tightening torque with feather
(Nm)
17
26
41
Screw tightening torque without feather
(Nm)
20
31
48
Number of screws
2
2
2
Technical data
Commissioning (after replacement)
■
Remove any remaining installation material and foreign objects from the impeller and suction area.
■
Check direction of rotation (direction of rotation arrow on the impeller base disc).
■
During initial commissioning, the entire unit must be checked for mechanical vibrations. If necessary, re-balancing
must be carried out.
■
Pay attention to a quiet operation, without vibrations.
The electrical installation may only be carried out by qualified electricians in compliance with the installation, operating
and maintenance instructions and the applicable national regulations, standards and guidelines:
■
EN, DIN and VDE specifications, including all safety requirements.
■
Technical connection conditions.
■
Safety at work and accident prevention requirements.
This list does not claim to be complete.
Requirements should be applied under one‘s own personal responsibility.
■
The electrical connections must be made as shown in the corresponding wiring diagrams and terminal diagrams.
■
The type of cable, size of cable and method of laying should be determined by an authorized electrician.
■
Low and extra-low voltage cables should be laid separately.
■
An all-pole mains disconnection device with at least 3 mm contact gap must be provided in the supply line.
■
Use a separate cable inlet for each cable.
■
Any cable inlets that are not used must be sealed so that it is airtight.
■
All cable inlets must have strain relief.
■
Create equipotential bonding between the unit and the duct system.
■
Check all protective measures after the electrical connection work (earthing resistance, etc.)
■
Motor current and motor power must not exceed the values stated on the motor nameplate. The specified max.
fan speed must never be exceeded, otherwise the motor and fan will be destroyed by this overload and dissolved
or flying parts can destroy other components.
12. ELECTRICAL CONNECTION
• Electricity warning (hazardous voltage)!
»
Failure to observe the hazard may result in death, injury or damage to property.
→ Before performing any work on conductive parts, always disconnect the unit completely from the electri-
city supply and make sure that it cannot be switched back on again.
