Comefri has successfully delivered an easy-maintenance plug fans for a painting booth application.

This customized solution allows the fast cleaning of the impeller during maintenance activities.

Here below the main features of this supply:

• N.8 Airfoil Fans NPA series 1000mm size
• N.2 Airfoil Fans NPA series 900mm size
• Atex execution for all of them
• Thermal insulation to keep the motor safe
• Roll-out configuration for quick maintenance

The main features of these plug fans are the following:

• Any kind of arrangement: Horizontal, Vertical (up & down) or slanting according to the AHU layout
• Wheel in Aluminum, steel or PLV according to Customers preference and requested performances
• Standard Aluminum AC motor (IE3 or IE4) which allows easy maintenance and standard motors stock
• Sizes until 560 mm as standard but possibility to extend it till 630 mm
• Very well suited for Fan Array execution with just n.1 Frequency converter for all Fans
• 100% recyclability with full Aluminum execution
• Short lead time (4 to 6 weeks)
• Fully customizable in terms of materials and painting
• Reliability and sturdiness of the system

Here below last applications:

The large use of AC Plenum Fans with direct driven motor (Arr.4) dominates the actual HVAC market, thanks to its very smart and compact solution for most current applications. The need of VFD (Variable Frequency Drive) is compulsory in most cases in order to match the motor speed with fan speed for the desired duty point.

However, there are many requests of AC Plenum Fans with no VFD in the market whereas it is very difficult to match motor and fan speed by using standard wheels.

To overcome this issue, Comefri has developed a smart solution: the Partial width wheel.

It consist of giving 10 different speeds with the same wheel just by reducing the blade width from 100% down to 50%. This huge flexibility almost always allows to match the motor speed in both 50Hz and 60Hz.

Here below, as an example, NPA 500 PW looked in 2 different meanings:

1. Range of performances allowed by NPA500 from 95% to 50% blade width
   
2. Aeolus software selection with the different choices with same Fan NPA 500
   

NPA Partial Width 100% - 80% - 60% - 50%

Very large supply of Comefri fans for one of the biggest Gigafactories in Europe.

A total of 122 Fans which accomplish with following main two tasks:

• Centrifugal Fans: Air-feed for AHU’s to keep under control air regulation and environment condition inside the painting booths
• Axial Fans & exhaust turrets: main buildings ventilation

BCE25/1250 Atex 3G Arr.8 with 75kW 6p motor

BCE25/1250 Atex 3G Arr.8 with 75kW 6p motor

AX 710 Arr.9 with 7.5kW 2p

TRV-NPA 630 with 7.5kW 4p

Another milestone in painting booths sector that leads Comefri to be a one of the main players in this industrial sector