Motor Specifications:
Standard motors are available with IP54 or IP55 protection, with other options available upon request. The nominal supply is 220/240V or 115V, single-phase, 50/60Hz, with additional options available.

Materials & Finishes:
The standard finish is sheet steel and powder-coated in black. Options include stainless steel (304 or 316) and aluminum, which can be unpainted or powder-coated.

Motor Variations:
ATEX, CE, CSA, and UL certifications are available upon request.

Noise Levels:
The maximum noise level is 98dB(A) at free air, measured at 1 meter.

Model Information:
The model HFM 315/128 is a single inlet centrifugal fan with a 2-pole motor. The reference for this model is HFM-315/104 2014/V1.

Dimensions and Accessories:
The document provides detailed dimensions for the model HFM-315/128, including discharge flange, inlet spigot, and discharge spigot measurements. It also includes an outline drawing with optional pedestal inlet weight and various dimensions for different power levels (15.0 kW, 18.5 kW, and 22.0 kW).

Additional Notes:
All drawing measurements are in millimeters, and technical specifications may be subject to change. The image of the fan may not represent the unit supplied.