CIAT VECTIOS POWER IPJ Series, Instruction Manual

Page: 25 / 60

VECTIOS
POWER TM
PJ EN-25
9.1 Checks in the axial fans
●
Before commissioning, check the blade rotation direction and
that the axis turns without strokes nor vibrations.
●
Once running, check the operation conditions: pressures,
fl
ows and consumptions.
●
With electronic fans (standard), check that they adapt their
rotational speed based on the condensation or evaporation
pressure.
Note: Optionally these units can be supplied with two-speed
fans.
9.2 Checks in the EC plug-fans
●
Before commissioning, check the blade rotation direction and
that the axis turns without strokes nor vibrations.
●
Once running, check the operation conditions: pressures,
fl
ows and consumptions.
●
The coupling of characteristic curves of the fan and the room
is very important, so that the
fl
ows and pressures provided to
the duct network are as required.
●
The variable-speed plug-fans, both supply and return, have a
fl
ow control pressostat. This pressostat comes from the factory
adjusted to the indicated
fl
ow. However, the
fl
ow for di
ff
erent
conditions can be readjusted on site from the VecticGD graphic
terminal (please refer to the Vectic control brochure).
9 - FANS AND AIR DUCTS
Flow control pressostat
9.3. Checks in the centrifugal fans (optional)
If the unit is equipped with centrifugal return fans (available in
CQ and CT assemblies):
Pulley and belt calibration
Pulleys must stay on the same plane
Tensor
screw
Pulley
screws
Taper pin
The centrifugal motorfans are coupled through pulleys and belts.
In these fans, the following must be taken into consideration:
Pulley alignment:
●
The pulleys must be on the same plane, so it is important to
check them with the help of a ruler or a laser aligner.
●
In case they are not aligned, remove the pulley screws, and
after removing the taper pin, the set of pulley and taper can
be slided over the axis (this action can be performed both in
the motor as well as in the fan).
Attention: Before performing these operations, it is
necessary to verify that the unit is disconnected from
mains.
●
Before commissioning, check the blade rotation direction and
that the axis turns without strokes nor vibrations.
●
Once running, check the operation conditions: pressures,
fl
ows and consumptions.
●
The overlapping of characteristic curves of the fan and the
room is very important, so that the
fl
ows and pressures
provided to the duct network are as required.