Kongskilde MultiAir MA 4000 Manuel Utilisateur page 28

Operation:
MultiAir MA 4000:
The blower is started and stopped on the main switch.
MultiAir FC/FCE 4000:
The blower is switched on and off 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 fits 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 switched 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
28
stopped with the main switch, but with the Stop button
on the operator panel. On the FCE models, the opera-
tor panel sits inside the control cabinet, and here too it
is important that the main switch is not used to stop the
blower.
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, except for MultiAir
MA 4550 and MultiAir FC/FCE 4550, whose bearings
are lubricated every 1.500 operating hours. Be sure to
thoroughly clean the grease nipple before lubrication.
The lubricant must be high quality lithium complex
grease, NLGI class 3. Grease type and amount can be
read on the motor nameplate.
NB - The bearings on the MultiAir MA 4550 and FC/
FCE 4550 are delivered lubricated, and must therefore
only be lubricated after 1.500 operating hours.
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.
The blower is equipped with a filter (class EU3) that is
mounted under the frequency converter. This filter must
be cleaned or replaced as needed. Additionally, it may
be necessary to clean the grid at the inlet, especially if
the blower is mounted outdoors.
The filter can be inspected as follows:
1 - Open the right door of the blower. The top plate of
the filter is lifted upwards, and pulled towards the cen-
tre of the blower.