IMO BKF

Warranty
6 BKF 16.08.2021
2.2.3 Personnel for operation/use, maintenance and cleaning
 Operation/use, maintenance and cleaning may only be carried out by trained and authorized personnel. The oper-
ating personnel must have appropriate knowledge about handling with the fan. In the case of a malfunction or an
emergency, they must react correctly and adequately.
2.3 Intended use
BKF box fan is intended for installation in ventilation systems. In case of fire it is used to extract smoke gases from the
room. Ventilated areas and emergency exits contribute to easier evacuation of people and equipment in the event of
fire, and to faster and more efficient fire extinguishing; they protect the building structure and equipment against ex-
cessive temperatures and decrease fire escalation to the surrounding areas. Installation is possible in all positions (see
Appendix 2), flange connection 30 mm. Installation outside building or inside building, outside fire zone in well venti-
lated rooms. Detailed restrictions at installation see Appendix 2.
 The fans are suitable for extraction of clean air, air with a low dust and grease content, media up to max. density of
1,3 kg/m³ and permissible moisture of max. 95 %. When applied for kitchen exhaust, regularly cleaning of impeller
and housing is necessary. Eventually provide with drain nipple (accessory).
 The maximum permissible operating data on the name plate apply for an air density ρ = 1,2 kg/m³ (sea level) and a
maximum air moisture of 80 %.
 Daily ventilation of medium -20 up to 120°C, continuous operation.
 The fans are generally suitable for ambient temperature -20 to +40°C (depending on specific motor load the per-
missible ambient temperature may be increased - on request).
 In case of fire all motor protective devices of the fan must be bridged to guarantee functional capability.
2.4 Improper use
Above all, the improper use means using the fan in a way other than that described. The following points are improper
and hazardous (observe also restrictions from Appendix 2):
- Use of a fan with improper identification (temperature/time class in case of smoke extraction);
- Installation inside fire zone to ventilate it;
- Not suitable to exhaust dust containing medium or medium with such dust concentration, that could affect
with dust deposits on operation and explosion protection (appropriate filtering necessary);
- Exhaust from explosion hazardous zones;
- In case of suction aggressive atmosphere additional acid protection of exposed parts is necessary;
- Operation without duct system or protective guard (intake protection); the outlet protection is available as
accessory (caution during maintenance and testing!)
- Operation with the air connections closed or in instable area;
- Operation without effective thermal protection (PTC) (exception: fire mode).
3 Warranty
Warranty for our products shall be determined according to the contractual agreements, our quotations and, as a sup-
plement, our General terms and Conditions of Business. Warranty claims shall presuppose that the products are cor-
rectly connected, operated and used accordingly to data sheets, and regularly maintained.
4 Transport, storage
4.1 Transport
Each fan leaves our plant in an electrically and mechanically proper condition. The fans are delivered in wooden
crates. We recommend transporting the fans to the installation site in original packaging.