Sometimes, installing a fan requires special attention in terms of safety and functionality. The solutions we have developed are suitable for different requirements and cases and comply with EC directives.
Performance differs from that of the standard fan. Its feasibility depends on the size of the motor.
Directly coupled fans, arrangements 4 and 5
MOTOR THERMAL CLASS |
FAN THERMAL CLASS |
ROOM TEMPERATURE |
FLOW TEMPERATURE |
---|---|---|---|
T4 |
T135°C (T4) |
-20 ÷ +40°C |
-20 ÷ +40°C |
T3 |
T200°C (T3) |
-20 ÷ +40°C |
-20 ÷ +40°C |
TX |
TX (Max temp. allowed by motor) |
-20 ÷ +40°C |
-20 ÷ TX (Max temp. allowed by motor) |
The following characteristics are mandatory:
The impellers can be made of aluminium or fi breglass reinforced polyamide:
*) The ATEX directive and the CE mark impose compliance with the machinery directive, so, in normative terms, the Atex fan must be considered as a partly completed machine and therefore protected. Users who, on the basis of a thorough risk analysis, consider it appropriate to remove the protections, should preserve them carefully so that they are available for installation if the fan undergoes a change in its intended use.
The same prescriptions already provided for the 3GD are applicable, and, in addition, the motor must be suitable in relation to the various operating environments.