IMO DVG30 03 2017 Am 10 05 2017

Warranty
6 DVG 30.03.2017
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
DVG fans are intended for installation in ventilation systems, outside buildings only (on roofs). They can be installed
either in duct systems or as a free sucking fan over a nozzle and a sucking side protection grid.
 DVG 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 im-
peller and housing is necessary.
 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 %.
 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).
 Daily ventilation of medium -20 up to 120°C, continuous operation (DVG-EC/F400 up to 80°C in standstill). On re-
quest motors can be equipped with electric heaters to meet lower temperatures.
 Smoke and heat extract roof fans DVG/F400 are intended to exhaust hot gases up to 400°C/120 min (F400/120,
F400/90, F300, F200). They are designed for use in powered smoke and heat exhaust ventilating systems in the
event of fire, and ventilating in normal conditions (dual use). 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 excessive temperatures and decrease fire escalation to
the surrounding areas. Snow load classification: SL 1000 for DVG-H/F400 with horizontal outlet – suitable for instal-
lation over heated or unheated buildings up to SL 1000 (provide appropriate height of the roof base). DVG-V/F400
with vertical outlet with classification SL 0 are suitable for installation only on the top of heated buildings, consider-
ing possible heat transfer. In case of fire all motor protective devices and controls must be bridged to guarantee
functional capability (connection direct to mains).
 Versions DVG-T and DVG/120 can be used for common daily ventilation only, not to be used for smoke extraction.
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:
- Use of a fan with improper identification (temperature/time class in case of smoke extraction);
- 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);
- Extraction of grease containing media (or regularly cleaning must be assured);
- The fans DVG are not intended to exhaust from explosion hazardous zones;
- In case of suction aggressive atmosphere additional acid protection of exposed parts is necessary;
- Not suitable for indoor use;
- Operation without duct system or protective guard (intake protection);
- Operation with the air connections closed;
- Operation without effective thermal protection (PTC).
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.