GFB

APPLICATION

Fan designed for transporting non-aggressive and non-explosive gases without contomination. Typical applications:

• various mechanical ventilation installations,
• air pumping in production processes,
• cooling, drying systems,
• refrigeration and air-conditioning equipment,
• air handling units.

CONSTRUCTION

• low-pressure centrifugal fan with direct drive,
• the impeller is welded from galvanized steel sheet with forward curved blades, dynamically balanced according to ISO 1940-1, (stainless steel sheet 1.4301 for size 97),
• the housing is made of welded sheet steel,
• protective mesh at the inlet,
• motor stand in 250-400 models and in the 4/225 model,
• fan painted blue RAL 5010 (corrosivity category C3),
• maximum temperature of the transported medium is 80°C,
• ambient temperature range from -20°C to +40°C,
• figure LG90 in 4/250, 4/315 and 6/315 models,
• figure LG270 in other models.

MOTOR

• asynchronous single-phase 230V 50Hz (power to 1,1kW),
• asynchronous, three-phase 230V/400V 50Hz (power to 3kW)
• asynchronous, three-phase 400V/690V 50Hz (power from 5,5kW),
• efficiency class IE3 (power from 0,25kW), or IE1 (power to 0,25kW),
• degree of protection IP55,
• insulation class F,
• three-phase motors are adapted for frequency converter.

SPECIAL EXECUTIONS

• optional configuration LG/RD,
• color other than standard,
• painting in higher category of corrosivity,
• housing and support made of galvanized steel sheet,
• housing and support made of stainless steel 1.4301,
• housing and support made of acid-proof steel 1.4404,
• motor with voltage and frequency of power different than standard,
• motor with other than standard degree of protection,
• motor equipped with sensors or additional cooling,
• sealing between the housing and the motor,
• ambient temperature range below -20°C and above +40°C.