Antti-Teollisuus Oy
20
408099 11-2020
Blower units and axial blowers
SERVICING
The cooling ribs and the impeller blades of the electric motors of both radial and axial blowers must be cleaned. If
the cooling ribs get dirty or the blower starts vibrating because of dust accumulated on the impeller, the cleaning
may have to be repeated even during the operating season. In addition, we recommend keeping an eye on the
essential parts of the blower for any signs of corrosion/fatigue and on the screws for tightness.
ELECTRIC INSTALLATION; FIRE THERMOSTAT
- Ensure the correct direction of rotation of the blower.
- Carry out the electric connection of the heater in accordance with the wiring diagrams for the electric centre.
-
Install the fire thermostat.
The fire thermostat shuts down all the operations of the dryer immediately after the pre-set temperature has been
reached, for example, as a result of fire inside the dryer. The fire thermostat is delivered with the blowers. A fire
thermostat is installed in every outlet pipe from the blower. Normally the thermostat is adjusted to 60 °C. The ther
-
mostat comes with a 2-metre-long capillary pipe, which makes it possible to install the thermostat box in a location
where it is easy to access. The manually operated reset button at the side of the thermostat box must always be
reset after the temperature has risen to the switch-off limit. In normal operation the temperature never rises to
such a high level. Such an exceptional situation may occur while the dryer is being test run empty whereupon the
temperature may easily rise to the pre-set switch-off value.
Current ratings for different blowers at maximum load:
-radial blower of 11 kW
21.5 A
-radial blower of 15 kW
28.5 A
-1-stage axial blower with 8,66 kW motor:
16,5 A
-1-stage axial blower with17,2 kW motor:
31,5 A
