FAQ
Differences between fan rating plates and motor plates
Questions frequently asked by customers and design engineers concern the fact that our fans sometimes have two types of plates with different data.One plate is located on the motor housing; it... celý článek
Assembly recommendations for small fans
The method of assembling small fans is of significant importance for the value of the emitted noise. In order to achieve the minimum values of noise after the installation of fans, it is necessary to... celý článek
The use of frequency converters with fans
If you do not require operating fans with electronic frequency converters or inverters, it is necessary to specify this in the order. Motors are exposed to a considerable load by converters and for... celý článek
Fire safety fans and the choice between 400V or 230/400V motors
Frequently asked questions by designers and assembly companies generally involve confusion related to the choice of a suitable three-phase motor for fire safety fans supplied by us. The choice of a... celý článek
Semiflex, thin or thick material?
Semiflex is a semi-flexible hose for air transport, which our company has produced since 1995. Semiflex is a single-layer hose made of an Al alloy strip. A unique, highly durable “triple lock” ... celý článek
Fluorescent lamps together with a fan
Designers sometimes require lighting and fans to be turned on simultaneously in social rooms or bathrooms. This common requirement can be recommended for all our fans with only one restriction... celý článek
Water condensation in fans and equipment
In some cases during the improper installation of fans, it may happen that condensed water runs into the fans or accumulates in the fan. This condition, of course, can endanger the function of the... celý článek
High temperature fans (120°C, 150°C)
There is a line of fans in the range of products of EDV that are suitable for industrial applications for air exhaust with a temperature of 150°C (or, as the case may be, to 120°C)... celý článek
Parallel running of fans
In some applications, for example, for garage ventilation, fans are designed in parallel connection. The above-indicated solution enables one to operate only one fan during low demands for air... celý článek
Fan noise and government order no. 502/2000 Coll.
We are often asked by people from installation companies whether the fans we deliver meet the statutory requirements defined in GO no. 502/2000... celý článek
Hoses with sound insulation and the risk of condensation
For reasons of the safety of structures, demand only vapour-proof hoses.IntroductionToday, elastic hoses with sound and thermal insulation are commonly used for... celý článek
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