MRA

APPLICATION

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

• pneumatic transport,
• blowing in drying systems (eg graphic machines and plastics processing),
• air blowing systems in combustion / heat treatment systems (eg melting furnaces).

CONSTRUCTION

• medium-pressure centrifugal fan with direct drive,
• riveted impeller from aluminium sheet with forward curved blades, dynamically balanced according to ISO 1940-1,
• aluminium cast housing,
• galvanized protective mesh at the inlet,
• model 600 is equipped with a motor support,
• fan painted grey RAL 7042,
• maximum temperature of the transported medium is 80°C,
• ambient temperature range from -20°C to + 40°C,
• figure LG270.

MOTOR

• asynchronous, single-phase, 230V, 50Hz (power from 0.75 to 1.5kW),
• asynchronous, three-phase, 230 / 400V, 50Hz (power from 0.75 to 1.5kW),
• asynchronous, three-phase, 400 / 690V, 50Hz (with power 4.0kW and 11.0kW),
• efficiency class IE3 (power from 0.75 kW) or IE1 (0.75 kW, 230V),
• degree of protection IP55,
• insulation class F,
• three-phase motors are adapted for frequency converter,
• for voltage regulation (single phase motors 1.1kW).

SPECIAL EXECUTIONS

• optional configuration LG/RD,
• colour other than standard,
• impeller made of galvanized steel sheet,
• impeller made of stainless steel 1.4301,
• impeller 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,
• maximum temperature of the transported medium above 80°C,
• ambient temperature range below -20°C and above +40°C.