The octagonal casing is manufactured from seawater resistant aluminium. The base frame consist of galvanised steel. The impeller with backward-curved blades is also manufactured from galvanised steel.
The fan is equipped with IEC IE1 single speed flange electric motor with degree of mechanical protection IP 54 or 55, insulation class F. Motor cooling with fresh air via air duct. Thermal motor protection on request (PTC). For frequency controlled units PTC must be ordered. Connection the fan to the mains in service switch (serial at sizes 800 and 1000) on the casing. Other sizes equipped with terminal box, service switch on request. EMC protected cables, cable glands or service switches on request.
On request fan can be factory fitted with sound attenuator on outlet as DVVI/120 fan. Sound attenuators are also available as HSDV accessories.
Note1 (for EU market only): not affected by Commission Regulation (EC) No 640/2009 (exception due to 8 pole motor or motor with output power less than 0,75 kW).
Note 2 (for EU market only): not affected by efficiency provisions of Commision Regulation (EU) No 327/2011 - exception 3 (c) (i) (a).
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Electric motor with star - delta starting | ||||
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