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Operation:
The blower is started and stopped on the main switch.
By using the operator panel (and possibly external plant
control) it is possible to regulate the performance of the
blower steplessly. It is therefore possible to adjust the
performance of the blower, so that it suits exactly to the
plant in question.
The adjustment can either be done manually, by ad-
just the blower speed, or automatically, by connecting
measuring equipment to the pipe system.
The measuring equipment measures either the static
pressure in the pipe system, and keeps this pressure
constant, or measures the air velocity in the piping, and
maintains the air velocity, and thereby air flow constant.
To achieve energy savings, it is important not to oper-
ate with higher performance than necessary, to solve
the task in question. Furthermore, too high blower
performance can cause damage to the material being
transported. After setting up and running in the blower,
the set point is stored, even if voltage is removed from
the blower. When the blower is in operation, and cur-
rent performance is in accordance with the set point,
the current value is displayed constant. If the set point
is changed, the blower will automatically adjust the
performance within its capacity.
Starting the blower: Press the start button (2). When
the blower is in operation, the blower icon lights up
green.
Stopping the blower: Press the stop button (1). When
the blower is stopped, the blower icon lights up red.
To increase blower performance: Press the up arrow
button (3). The button can be held down constantly for
a major adjustment. Until the blower has reached the
desired performance, the green blower icon flashes.
To decrease blower performance: Press the down ar-
row button (4). The button can be held down constantly
for a major adjustment. Until the blower has reached
the desired performance, the green blower icon flashes.
If the desired set point cannot be achieved, the green
blower icon will flash.
Starting and stopping the blower during normal opera-
tion must be done on the operator panel, or at the input
on the blower digital inputs. In the event that the main
switch is turned off and reconnected before ½-1 min-
ute after disconnection, it may be necessary to reset
an error in the error menu, after which the blower nor-
mally works again. The blower should therefore not be
stopped with the main switch, but with the Stop button
on the operator panel.
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Service and maintenance:
All service, maintenance and repair must be performed
by qualified or instructed person.
The motor bearings are lubricated from the factory and
do not require additional lubrication.
The blower rotor is mounted directly on the motor shaft,
there is therefore no bearing in the blower itself. Make
sure that there is always an unobstructed supply of
cooling air to the blower.
Annual inspection
Once a year, the following must be done:
•
Visually inspect all covers and pipe connections for
attachment and tightness
•
Check tightening of cables and connections
•
Check the frequency converter cooling fans, includ-
ing possibly cleaning for dust
•
Clean the blower motor, since dust and the like will
reduce engine efficiency and service life
The frequency converter is equipped with 2 cooling
fans, running as soon as the main switch is connected.
Life expectancy for the cooling fans is approx. 4-6
years of continuous operation, after which they will de-
crease in speed, and stop at last (see section "Trouble-
shooting"). The cooling fans should be replaced before
their performance deteriorates significantly, to ensure
proper cooling of the frequency converter.
The filters are located on the cooling fan and in the op-
posite side of the cabinet. The filters should be cleaned
when necessary, using pressurized air or water. In case
water is used, the filter should be dry prior to instal-
lation. In case the filters are very dirty / clogged, they
should be replaced. Ensure correct fitting when putting
back the filter.
To inspect and possibly clean the filters, do as follows:
1 - press both clips to release the plastic frame.
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