VC 4-75 NZh #6.3 w/motor AIR 112 MA6 3 kW 1000 rpm, execution 1

Series VC 4-75 NZH #6,3 low-pressure centrifugal fan (VR 88-72.1-5.5, VR 80-75-5) with corrosion-resistant electric motor Electric motor AIR 112 MA6 3.0 Power kW 1000 Vol./Min, made of AISI 403 stainless steel for aggressive environments.

This fan is intended for ventilation or air-conditioning systems and other gas mixtures contaminated with aggressive gases and vapors—where the corrosion resistance of stainless steel exceeds that of standard carbon steel—and which contain no fibrous materials, sticky substances, dust, or other solid impurities in excess of 100 mg/m³ under moderate (U) climate (3rd placement category) and tropical (T) climate (2nd placement category) conditions in accordance with DSTU 15150.

The centrifugal fan VC 4-75 NZH #6,3 (VR 88-72.1-5.5, VR 80-75-5) consists of the following modules, which can be purchased separately:

• Fan assembly VC 4-75 NZH #6,3 (VR 88-72.1-5.5, VR 80-75-5) without electric motor
• Impeller wheel of fan VC 4-75 NZH #6,3 (VR 88-72.1-5.5)
• Scroll casing of fan VC 4-75 NZH #6,3 (VR 80-75-5)
• Electric motor Electric motor AIR 112 MA6 3.0 Power kW 1000 Vol./Min for fan VC 4-75 NZH #6,3

General information about VC 4-75 NZh #6.3 w/motor AIR 112 MA6 3 kW 1000 rpm centrifugal fans (VR 88-72.1-5.5, VR 80-75-5):

• Low pressure
• Single-suction
• Backward-curved blades
• Number of blades: 12
• Direction of rotation – right and left
• Fans are manufactured in accordance with TU U 28.2-24881057-003:2023
• Construction material – stainless steel

Purpose of VC 4-75 NZh #6.3 w/motor AIR 112 MA6 3 kW 1000 rpm centrifugal fans (VR 88-72.1-5.5, VR 80-75-5):

The VC 4-75 NZh #6.3 w/motor AIR 112 MA6 3 kW 1000 rpm stainless-steel centrifugal fan is intended for moving air and other gas mixtures contaminated with aggressive gases and vapors—where the corrosion resistance of stainless steel exceeds that of ordinary steel—and which contain no sticky substances, fibrous materials, dust, or other solid impurities in excess of 100 mg/m³.

Applications of VC 4-75 NZh #6.3 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 uses

Operating conditions of VC 4-75 NZh #6.3 w/motor AIR 112 MA6 3 kW 1000 rpm (VR 88-72.1-5.5, VR 80-75-5) centrifugal fan: Operates 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 of VC 4-75 NZh #6.3 w/motor AIR 112 MA6 3 kW 1000 rpm (VR 88-72.1-5.5, VR 80-75-5) centrifugal fan: Air, by energy imparted by the impeller blades, enters the fan under centrifugal force at a 90° angle and is directed radially into the spiral scroll casing; within the casing, the air under pressure follows a spiral path and is discharged through the fan outlet.

Delivery set of VC 4-75 NZh #6.3 w/motor AIR 112 MA6 3 kW 1000 rpm (VR 88-72.1-5.5, VR 80-75-5) centrifugal fan:

• Spiral casing
• Impeller wheel (front and rear discs, 12 blades, hub)
• Support frame (welded stand with hole for mounting on vibration isolators or foundation)
• Collector (conical, attached to inlet nozzle; overlap between collector and impeller front disc is adjusted by axial movement)
• Electric motor Electric motor AIR 112 MA6 3.0 Power kW 1000 Vol./Min

Position of casings of right-hand (PR) and left-hand (LIV) rotating radial fans VC 4-75 NZh #6.3 w/motor AIR 112 MA6 3 kW 1000 rpm, as viewed from the suction side:

a) right-hand rotation
b) left-hand rotation

Note on placement categories based on climatic conditions:

1st category: for operation in the open air (exposure to the combination of climatic factors characteristic of the given macroclimate region);

2nd category: for operation under a canopy or in spaces where temperature and humidity fluctuations do not differ significantly from outdoors, but with relatively free access to external air and protection from direct sunlight and precipitation (e.g., tents, vehicle bodies, trailers, uninsulated metal enclosures, or housings of 1st-category equipment);

3rd category: for operation in enclosed spaces with natural ventilation without artificially regulated climate, where temperature and humidity fluctuations and the influence of dust and sand are significantly lower than outdoors (e.g., insulated metal, stone, concrete, or wooden enclosures without direct exposure to precipitation or sunlight; reduced wind; minimal moisture condensation);

4th category: for operation in spaces with artificially regulated climatic conditions, such as heated or cooled and ventilated industrial premises, air-conditioned or partially air-conditioned halls, and well-ventilated underground spaces (absence of direct sunlight, precipitation, wind, sand, and dust);

5th category: for operation in spaces with elevated humidity (e.g., unheated and unventilated underground spaces including mines, basements, earth-covered structures, ship holds, and other areas where prolonged water presence or frequent moisture condensation on walls and ceilings may occur; textile and hydrometallurgical workshops, etc.).