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Backward curved impeller
DFR-N
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Double inlet centrifugal fan. Manufactured from carbon steel protected with cataforesis primer + polyurethane paint finish RAL 7045.
Working temperature range: -20ºC/+40ºC continuously (+60ºC with C3 bearings).
Standard arrangement
• Arrangement 6: Impeller mounted on shaft running in bearings on each side of casing and supported by the fan casing.
• Arrangement 17: For coupling drive. Generally as arrangement 6 but with a base for the driving motor.
• Arrangement 18: Generally as arrangement 6 but with a fan and motor supported by common base frame.
• Arrangement 19: Generally as arrangement 6 but with the motor supported by the fan scroll.
Motors
2, 4 or 6 pole, IE 3* high efficiency (the rpm of each motor will be adapted according to the calculation for each drive), three-phase 230/400V 50Hz up to motor size 112 and 400/690V 50Hz for higher motors. IP55 protection, class F.
* From 75kW to 200kW, the motor will be IE4.
On request
• Manufactured from different materials.
• Painted in different RAL colour.
• Hot dip galvanized static parts.
• Corrosion proof construction.
• Motors for special applications.
• Motors suitable for VSD.
• Accessories: Flexible joints, inspection door, casing drain, AV-mounts, protection nets, silencer, valves and dampers.
Working temperature range: -20ºC/+40ºC continuously (+60ºC with C3 bearings).
Standard arrangement
• Arrangement 6: Impeller mounted on shaft running in bearings on each side of casing and supported by the fan casing.
• Arrangement 17: For coupling drive. Generally as arrangement 6 but with a base for the driving motor.
• Arrangement 18: Generally as arrangement 6 but with a fan and motor supported by common base frame.
• Arrangement 19: Generally as arrangement 6 but with the motor supported by the fan scroll.
Motors
2, 4 or 6 pole, IE 3* high efficiency (the rpm of each motor will be adapted according to the calculation for each drive), three-phase 230/400V 50Hz up to motor size 112 and 400/690V 50Hz for higher motors. IP55 protection, class F.
* From 75kW to 200kW, the motor will be IE4.
On request
• Manufactured from different materials.
• Painted in different RAL colour.
• Hot dip galvanized static parts.
• Corrosion proof construction.
• Motors for special applications.
• Motors suitable for VSD.
• Accessories: Flexible joints, inspection door, casing drain, AV-mounts, protection nets, silencer, valves and dampers.
ATEX versions
On request, explosion proof versions in accordance with ATEX directive for three phase models:
Ambient temperature -20°C to +60°C, ambient pressure (abs.) 0,8 bar to 1,1 bar according to EN 14986.
• Gas:
3G IIB T2-T3-T4, Motor ExnA (only for 3G zone)
3G IIB+H2 T2-T3-T4, Motor ExnA (only for 3G zone)
On request, explosion proof versions in accordance with ATEX directive for three phase models:
Ambient temperature -20°C to +60°C, ambient pressure (abs.) 0,8 bar to 1,1 bar according to EN 14986.
• Gas:
3G IIB T2-T3-T4, Motor ExnA (only for 3G zone)3G IIB+H2 T2-T3-T4, Motor ExnA (only for 3G zone)