Manual KVBF
3 Proper use
The fans are intended for installation in ventilation systems!
The fans of the series KVB/F are ready-to-use products and are used as components for ventilation applian-
ces, machines and systems. With these fans, air can be sucked out, inserted or also conveyed. As a standard,
the fans are supplied with a thermal motor protection (PTC).
The fans can be installed both in channel systems and also with free suction via an admission nozzle and a
suction-side contact protection grid. Free blow-out via a contact protection grid is also possible following prior
consideration during design.
The fans may not be used in areas in which an explosion-capable atmosphere can be found. The fans are not
suited for suction of dusty or aggressive media or media with such a content of dust that operation of the fan
could be impaired by accumulation on the blades and on the fan housing.
• The maximum admissible operating data on the name plate apply to an air density ρ =1.2 kg/m³
(See level)and a maximum air humidity of 80 %. The fans are suited for an ambient temperature of
no more than 55 °C (pay attention to information on name plate). The temperature of the material
conveyed may not exceed 55 °C or fall below –20 °C.
• The maximum admissible temperatures stated above can be increased to an ambient temperature of
60 °C, 80 °C or even up to 100 °C (pay attention to precise information on name plate) by use of ISO H
motors. The temperature of the material conveyed may then not exceed 100 °C or fall below –20 °C.
• With the use of specic motors (pay attention to precise information on name plate), the fans can also
be used up to a maximum air humidity of 95 %.
• The motors cannot be voltage-controlled. Speed regulation is only possible via a customary frequency
inverter, e.g. Systemair FRQ or FXDM.
4 Personnel
4.1 Qualication
The electrical connections of the fans may only be carried out by trained electricians.
4.2 Personal protective equipment
Protective working gloves, protective working shoes and goggles for assembly, installation, maintenance and
control work are part of the personal protective equipment for assembly, maintenance and repair personnel.
7
AX - 12.2012
Smoke and heat exhaust fans