Soler and Palau Ltd - Ventilation and Airflow Specialists

Available sizes: 200 to 1000 mm diameters

Three distinct versions which have different generic characteristics as follows: 

• HR Series: 5 sickle blade propeller, manufactured from pressed aluminium sheet.
• HRS Series: 7 sickle blade impeller manufactured from die cast aluminium and adjustable pitch angle.
• HRB Series: High volume airflows for long-distance projection achieved by optimized straight aerofoil bladed impellers; improved cost/ airflow ratio and full sturdy construction.

 Specification Standards

Manufactured to client specification these fans comply with the: "Electromagnetic Compatibility" 89/336 EEC and 92/31 EEC and, "Low Voltage" 72/23 EEC and 93/68 EEC European Directives once they have been installed in the final PRODUCT.

It is therefore important that the final OEM appliance is tested and certified by the appliance manufacturer according to EN-60555-2 and EN 60335-1 standards.

Available sizes from 130 to 710 mm diameters. 

Electrical characteristics      All new Rotorex series fans incorporate, as standard, asynchronous external rotor style permanent split capacitor motors. All motors are manufactured in accordance with EN-60034-1 standards.
 
Standard Rotorex models are available with single phase 230V +/- 6% 50Hz or three phase 230/400V +/- 6% or 400V (Delta) +/- 6%, 50Hz motors. Motors suitable for voltages, up to 500V, are available on request. Whilst the standard motors supplied operate at a frequency of 50Hz the majority of motors can also be supplied, on request, as suitable for operating at 60Hz

The Rotorex motors are suitable for speed control by voltage regulation using either electronic or by transformer speed control regulators. 

The fans are also suitable for use with frequency inverter speed controllers.

Construction details:

Wheel

Forward curved centrifugal impellers, tab locked on both sides to two stell rings and double disk at the centre. The blade has been designed to minimize the loss caused y the air turbulence and to achieve the minimum sound level with the maximum efficiency.

All wheels are dynamically balanced.

Housing

Constructed form electro-welded sheet steel. A cut-off to prevent turbulence is mounted on the discharge side. The side plates are provided with inlet and drill holes for fixing the base support as well as the motor support. The RTC models are manufactured using standard fan and adding rectangular structure built with "L" profiles. This frame is spot-welded to the fan and strengthens the unit.

Motor

The motors are fitted with a support including rubber anti-vibration mounts. Motors are in accordance with CEI 34-1 and UNE 20-113 standards.

CM: Open motor, IP10, class B, 1 speed.
CM 3V: Open motor, IP10, class B, 3 speeds.
CM/AL: Aluminium housing closed motors, IP44, class F, 1 speed.
RE: External rotor motors, IP54, class F, 1 speed.

These centrifugal plug fans are made with backward curved impellers that have been specifically developed to provide optimal performance when used without a scroll case,

• They are designed to be directly coupled with standard motors, with speed control either using a variable frequency drive, or through voltage adjustment.
• Diameter wheel range from 280 up to 1000 mm.
• Airflow up to 70.000 m3/h, pressure rise up to 2800 Pa.
• Efficiency up to 75% - Very low noise level. 

Application Information

 Centrifugal plug fans are unhoused fans designed to operate inside of field-fabricated or factory-built air handling units. The fan wheel pressurizes the entire surrounding air plenum in which the fan is installed, allowing air ducts from any direction to be directly connected to the air handling unit enclosure. This design generally saves space by eliminating the fan housing, transitions, and diffusers within the air handling unit.

Plug fans have found a ready acceptance in the air conditioning industry. In addition, the construction versatility, adaptability in the direction of the discharges, suitability for internal isolation and application of sound panels, and generally lower cost makes it a very popular fan arrangement.

 Benefits of a Plug Fan

• Saves Space: There are no housings, transitions, or diffusers within the air handling unit
• Efficiency: Plug fans can be as efficient or as more efficient than scroll type fans at specific operating points towards the bottom of the fan curve

Lower cost: Plug fans are less expensive than scroll type fans.