Set up the centrifugal fan
WARNING!
Risk of injury from the incorrect handling and
operation of fans!
Incorrect handling, e.g. reaching into rotating parts,
can lead to serious injuries.
–
Do not reach into the moving fan or tamper with
it.
–
The fan does not stop immediately! Check that
no parts are moving before you open an inspec-
tion access door.
–
Do not put a damaged or defective fan into oper-
ation.
–
Do not exceed a fan's maximum capacity, e.g.
when there are strong vibrations or against a
closed multileaf damper.
–
Switch off the system before you start working on
movable fan parts and secure it against acciden-
tally being switched on again. Wait until all parts
have come to a standstill.
Switch off the system before you start working on
movable fan parts and secure it against acciden-
tally being switched on again. Wait until all parts
have come to a standstill.
Switch off the AHU before you start working on
movable fan parts and secure it against acciden-
tally being switched on again. Wait until all parts
have come to a standstill.
Switch off the system before you start working on
movable fan parts and secure it against acciden-
tally being switched on again. Wait until all parts
have come to a standstill.
WARNING!
Risk of fire from damaged fan parts!
Grinding rotors or overheating bearings can cause a
fire and eventually serious or even fatal injuries.
–
Do not put a damaged or defective fan into oper-
ation.
–
The power consumption must not exceed the
specified nominal current.
–
Make sure that the maximum motor speed is not
exceeded.
Personnel:
Skilled qualified electrician
Protective equipment:
Protective clothing
Hearing protection
Industrial safety helmet
Protective gloves
Safety shoes
1.
Remove the red transport protection devices from
the fan.
2.
Check the fan for shipping damage, imbalance,
corrosion and contamination.
3.
Check ducts and fan for foreign matter.
4.
Turn the rotor manually to check that it moves
freely.
The clearance between the rotor and the bell-
mouth inlet may have changed due to vibra-
tions during transport. Check before commis-
sioning that the distance between the inner
edge of the rotor and the outer surface of the
bellmouth inlet is the same everywhere.
5.
Tighten all fixing screws.
6.
Check the bearings and relubricate them if neces-
sary.
7.
Make sure that the multileaf dampers are open,
‘Setting up multileaf dampers’ on page 58
8.
Check the direction of rotation of the fan by
switching on the motor for a moment.
Nominal motor power of 3 kW and higher: star
delta start.
In units with a fan with asynchronous motor,
the arrow indicating the direction of rotation
can be found on the fan casing.
In units with an EC fan, the fan will automati-
cally start in the correct direction of rotation.
9.
You can change the direction of rotation by swap-
ping the terminal connections.
10.
Ensure that the unit has been correctly earthed.
11.
Close all inspection access doors on the air han-
dling unit
Ä
Operating manual.
12.
Measure the power consumption with the inspec-
tion access doors closed and compare it with the
nominal current.
If the power consumption exceeds the value
given on the motor rating plate, switch off the
fan immediately.
13.
Check the function of the anti-vibration elements.
Initial commissioning
Setting up and adjusting AHU casing units > Centrifugal fan
Air handling unit X-CUBE X2 / X-CUBE X2 compact
54
