CLIMAVENETA ACCURATE, Руководство пользователя и по обслуживанию

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17
English 01/07
ACCURATE AX* - AW*
TIGHTENING THE DRIVE BELTS
A I U
ELECTRIC HEATERS
A I U
In the versions from frame 3 upwards, the fans in the standard
version are centrifugal with forward blades and belt drive.
A required periodical maintenance operation (at least once a
year) involves having specialist personnel check the correct ten-
sion of the belt.
To check the tension, proceed as follows: apply a perpendicular
force of around 20 N (2 kg) to the centre of the belt (between
the 2 pulleys).
The belt must have a deformation of around 6-8 mm.
If this is not the case, adjust the tension using the worm screw
located on the slide that supports the electric motor.
Overly tight belts will cause unbalanced transmission.
Too loose belts, on the other hand, will cause the motor to over-
heat and excessive power consumption.
DRIVE PULLEYS
Below is a description of how to assemble and dismantle the pul-
leys if these require replacement or repair.
Dismantling
Take out the 2 safety screws and remove the pulley from the
elastic ring
See Fig.A
Assembly
Slide the elastic ring onto the motor pin. Insert the pulley on top,
then tighten the fastening screws
See Fig. B
ELECTRIC HEATERS
The overall power of the electric heaters is divided into a num-
ber of elements, each with a power of 2/3/4 kW.
The colour of the wires on each element has the following mean-
ing:
• BLACK wire = low power element (0.7/1/1.3 kW);
• WHITE wire = high power element (1.3/2/2.7 kW);
• RED wire = common.
The wires for each element are connected to contactors M5 and
KM6 on the electrical panel so as to balance the load between
the phases and create three stages of power (see the wiring dia-
grams on the unit).
If having to replace the electric heaters, disconnect power to the
air-conditioner and wait until the heating elements have cooled
down.
After having replaced the heaters, make sure the earth is con-
nected.
6-8 mm
20N
A
B