Carel easy, Руководство пользователя

Страница: 9 / 32

9
GB
easy/easy compact +030220791 - rel. 2.0 - 30.05.2007
2. ASSEMBLY AND INSTALLATION
2.1 Assembly
Warnings:
Avoid installing the boards in environments with the following
characteristics:
relative humidity greater than 90% or where there is condensation;
strong vibrations or knocks;
exposure to continuous water sprays;
exposure to aggressive and polluting atmospheres(e.g.: sulphur and
ammonia fumes, saline mist, smoke) so as to avoid corrosion and/or
oxidation;
strong magnetic and/or radio frequency interference (there avoid
installing the units near transmitting antennae);
near transmitting antennae and to the elements in general;
large and rapid fl uctuations in the ambient temperature;
environments where explosives or mixes of fl ammable gases are
present;
exposure to dust (formation of corrosive patina with possible oxidation
and reduction of insulation.
To install easy and easy compact: make an opening in the panel based on
the drilling template, 71x29 mm.
Panel installation using 2 rear brackets (Figs. 2.a and
2.b)
insert the instrument in the opening (phase 1);
secure the instrument by sliding the brackets in the guides on the
instrument until compressing them against the panel (phase 2);
easy
1
2
PUSH
Fig. 2.a
easy compact
1 2
PUSH
Fig. 2.b
Removing from the panel with brackets
release the instrument by pressing both brackets where marked “push”
and sliding it back on the guides.
Panel installation from the front using screws (Fig. 2.c)
the thickness of the fastening panel must not exceed 3 mm;
remove the front frame and make sure that the two catches are in place
(these must not protrude from the outline of the drilling template). If
necessary, unscrew the two screws. Do not unscrew excessively, the
screws must not be detached from the front panel (phase 1);
insert the instrument in the opening in the panel and hold it in position
by the centre of the front panel (phase 1);
using the screwdriver, tighten the bottom screw 90°, the catch must
come out of its slot and click onto the panel, then tighten until the front
panel is secure; Do not over-tighten, when the front panel is secured
blocks simply make another ½ turn to compress the gasket; If the catch
does not click onto the panel, unscrew the screw, applying pressure at
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
the same time with the screwdriver so that the catch moves back. Do
not unscrew too much, the head of the screw must not be raised from
the surface of the front panel (phase 2);
repeat the same operation for the top screw (phase 2);
apply the front frame (phase 3).
max 2,5
1
(
*
)
2 3
Fig. 2.c
(*) do not over-tighten the screws.
Dismantling using the screws from the front
unclip the front frame;
unscrew the bottom screw, at the moment the front panel detaches
from the panel keep pressure on the screw and unscrew a further 90°
to make the catch go back into its slot;
repeat for the top screw;
remove the instrument from panel, keeping it horizontal
2.2 Electrical connections
Warnings:
the electrical connections must only be completed by a qualifi ed
electrician;
a power supply other than the type specifi ed may seriously damage
the system;
separate as much as possible the probes and digital input signal
cables from the cables carrying inductive loads and power cables to
avoid possible electromagnetic disturbance. Never lay power cables
(including the electrical cables) and probe signal cables in the same
conduits. Do not install the probe cables in the immediate vicinity of
power devices (contactors, circuit breakers or similar);
reduce the path of the probe and sensor cables as much as possible,
and avoid spiral paths that enclose power devices. The probes must
be connected using shielded cables (minimum cross-section of each
wire: 0.5 mm
2
);
avoid direct contact with internal electronic components;
connection errors (and connections other than those indicated in this
manual) may involve danger to the safety of the users and cause faults
on the instruments and the components connected;
fi t the unit with all the electromechanical safety devices required to
guarantee correct operation and the complete safety of the user.
Information:
the probes can be installed up to a maximum distance of 30 m from
the controller. To extend the distance of the probes, use cables with a
minimum cross-section of 1 mm2, shielded where possible. In this case,
the shield must be connected to the common of the probe. Do not
earth the other end of the shield (the sensor end);
only use IP67 probes as end defrost probes; place the probes with the
vertical bulb upwards, so as to assist the drainage of any condensate.
The thermistor temperature probes (NTC or PTC) have no polarity, so
the order of connection of the ends is not important;
use cable ends suitable for the corresponding terminals. Loosen each
screw and insert the cable ends, then tighten the screws. When the
operation is completed, slightly tug the cables to check they are
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•