VC 4-75 #8 w/motor AIR 112 MA6 3 kW 1000 rpm, execution 5

General industrial-purpose low-pressure centrifugal fan of series VC 4-75 #8 (VR 88-72.1-5.5, VR 80-75-5) with electric motor Electric motor AIR 112 MA6 3.0 Power kW 1000 Vol./Min, execution scheme № 5 with V-belt drive, manufactured from carbon steel.

This fan is intended for ventilation or air-conditioning systems and other gas mixtures whose aggressiveness to carbon steel does not exceed that of air at up to 80 °C, and which do not contain fibrous materials, sticky substances, dust, or other solid impurities in excess of 100 mg/m³ under moderate (U) climate (placement category 3) and tropical (T) climate (placement category 2) in accordance with DSTU 15150.

Modular components available separately:

• Fan series VC 4-75 #8 without electric motor
• Impeller wheel series VC 4-75 #8 (VR 88-72.1-5.5)
• Fan casing series VC 4-75 #8 (VR 80-75-5)
• Electric motor Electric motor AIR 112 MA6 3.0 Power kW 1000 Vol./Min for fan series VC 4-75 #8

General information about series VC 4-75 #8 w/motor AIR 112 MA6 3 kW 1000 rpm (VR 88-72.1-5.5, VR 80-75-5) centrifugal fans:

• Low pressure
• Single-sided suction
• Backward-curved blades
• Number of blades: 12
• Rotation direction: right and left
• Execution scheme: № 5 (V-belt drive with belts, driving and driven pulleys)
• Manufactured in accordance with TU U 28.2-24881057-003:2023

Application of series VC 4-75 #8 w/motor AIR 112 MA6 3 kW 1000 rpm (VR 88-72.1-5.5, VR 80-75-5) centrifugal fans:

• Air-conditioning systems
• Ventilation systems
• Air heating systems
• Other sanitary and industrial purposes

The series VC 4-75 #8 w/motor AIR 112 MA6 3 kW 1000 rpm centrifugal fans operate under moderate climate conditions at ambient temperatures from −40 °C to +40 °C. The temperature of the conveyed medium must not exceed 80 °C.

Principle of operation:

Air is drawn into the fan by centrifugal force through the impeller blades at a 90° angle and directed radially into the scroll casing; within the casing, the pressurized air follows a spiral path and is discharged through the fan outlet.

Completeness of series VC 4-75 #8 w/motor AIR 112 MA6 3 kW 1000 rpm (VR 88-72.1-5.5, VR 80-75-5) centrifugal fans:

The fan series VC 4-75 #8 with electric motor Electric motor AIR 112 MA6 3.0 Power kW 1000 Vol./Min consists of the following main components:

• Scroll casing
• Impeller wheel
• Frame (stand)
• Collector
• Electric motor Electric motor AIR 112 MA6 3.0 Power kW 1000 Vol./Min

The impeller wheel includes front and rear discs, 12 sheet blades, and a hub.

The fan frame is welded, with a base opening for mounting on vibration isolators or a foundation. The motor and casing are secured to the frame.

The conical collector attached to the inlet nozzle guides air to the impeller. The overlap between the collector and the impeller’s front disc is adjusted by axial movement of the collector in the nozzle.

Housing orientation for right (PR) and left (LIV) rotation (view from the suction side):

• a) Right rotation
• b) Left rotation

Placement category notes by climatic conditions:

Category 1: Outdoor operation (exposed to combined climatic factors typical of the macroclimate region).

Category 2: Operation under a canopy or in spaces where temperature and humidity fluctuations are similar to outdoors, with free external air access (e.g., tents, trailers, uninsulated metal enclosures).

Category 3: Indoor operation with natural ventilation without artificial climate control, where exposure to dust, moisture, and temperature fluctuations is reduced (e.g., insulated metal, stone, concrete, or wooden buildings).

Category 4: Operation in air-conditioned or ventilated production premises, including well-ventilated underground spaces.

Category 5: Operation in high-humidity areas, such as unheated, unventilated underground spaces (mines, basements, soil), or compartments where water accumulation or condensation is frequent (e.g., some ship holds, textile or hydrometallurgical workshops).