EVCO EVR274N9 - Manual (Page 2)

EVCO S.p.A. | Code 104R200E114 | Page 2 of 10 | PT 14/13 | version 1.1
IMPORTANT
Read this document thoroughly before installation and be-
fore use of the device and follow all recommendations;
keep this document with the device for future consultation.
Only use the device in the way described in this document;
do not use the same as a safety device.
The device must be disposed of in compliance
with local Standards regarding the collection of
electric and electronic equipment.
1 DIMENSIONS AND INSTALLATION
1.1 Installation warnings
- the thickness of the panel must be between 0.8 and 2.0
mm (0.031 and 0.078 in)
- make sure that the device work conditions (tempera-
ture of use, humidity, etc.) lie within the limits indi-
cated; see chapter 12
- do not install the device near to any heat sources (heating
elements, hot air ducts etc.), equipment containing
powerful magnets (large diffusers, etc.), areas affected
by direct sunlight, rain, humidity, excessive dust,
mechanical vibrations or shocks.
- in compliance with Safety Standards, the device must
be installed correctly and in a way to protect against
any contact with electric parts; all parts that ensure
protection must be fixed in a way that they cannot be
removed without the use of tools.
2 ELECTRIC CONNECTION
2.1 Warnings for the electric connection
- do not use electric or pneumatic screwdrivers on the
device terminal board
- if the device has been taken from a cold to hot place,
humidity could condense inside; wait about 1 hour
before powering it
- make sure that the power supply voltage, the frequency
and the operational electric power of the device,
correspond with those of the local power supply; see
chapter 12
- disconnect the device power supply before proceeding
with any type of maintenance
- position the power cables as far away as possible from
the signal cables
- for repairs and information regarding the device, contact
the EVCO sales network.
3 USER INTERFACE
3.1 Preliminary notes
Operating Statuses:
-
“on” state (the device is powered and is on: the regulators
can be switched on)
- “stand-by” status (the device is powered but is switched
off via software: the regulators are switched off; the
possibility to manually switch on/switch off the cell light
or auxiliary output depends on parameter u2)
- the “off” status (the device is not powered).
Hereafter, with the word “start-up” means the passage from
“stand-by” status to “on” status; the word “shutdown” means
the passage from “on” status to “stand-by” status.
When the power is switched back on, the device displays the
status that it was in at the time it was disconnected.
3.2
Device switch-on/off in manual mode
Operating Statuses:
1.
Make sure that the keyboard is not locked and that no
procedure is in progress.
2. Hold the key down for 2 s: the LED will switch
off/on.
Using the digital inputs it is also possible to remotely switch
on/off the device.
3.3
The display
If the device is switched on, during normal operation, the
display will show the cell temperature, except during
defrosting, when the device will show the temperature
established with parameter d6.
If the device is switched off, the display will be switched off.
3.4
Display of the evaporator temperature (not
available in EVR221, EVR231, EVR261 and
EVR271 models)
1. Make sure that the keyboard is not locked and that no
procedure is in progress.
2. Hold the key down for 1 s: the display will show the
first label available.
3. Press and release the key or the key to select
“Pb2”.
4. Press and release the key.
To exit the procedure:
5.
Press and release the key or do not operate for
60 sec.
6.1 Press and release the or down key until the
display shows the cell temperature or do not operate
for 60 sec.
Alternatively:
6.2 Press and release the
key.
If the evaporator probe is absent (parameter P3 = 0), the
label “Pb2” will not be displayed.
3.5
Condenser temperature display (in EVR204,
EVR234, EVR264 and EVR274 models only)
1. Make sure that the keyboard is not locked and that no
procedure is in progress.
2. Hold the key down for 1 s: the display will show the
first label available.
3. Press and release the key or the key to select
“Pb3”.
4. Press and release the key.
To exit the procedure:
5.
Press and release the key or do not operate for
60 sec.
6.1 Press and release the or down key until the
display shows the cell temperature or do not operate
for 60 sec.
Alternatively:
6.2 Press and release the
key.
If the fourth input function is that of the digital input
(parameter P4 = 0), the label “Pb3” will not be displayed.
3.6
Mains voltage display (in EVR263, EVR273,
EVR264 and EVR274 models only)
1. Make sure that the keyboard is not locked and that no
procedure is in progress.
2. Hold the key down for 1 s: the display will show the
first label available.
3. Press and release the key or the key to select
“Ui”.
4. Press and release the key.
To exit the procedure:
5.
Press and release the key or do not operate for
60 sec.
6.1 Press and release the or down key until the
display shows the cell temperature or do not operate
for 60 sec.
Alternatively:
6.2 Press and release the
key.
3.7 Activation/deactivation of “overcooling”
function
1. Make sure that the keyboard is not locked and that no
other operation is in progress, that defrosting and/or
dripping is not in progress and that the evaporator fan
is off.
2. Hold the key down for 4 s: the Overcooling LED will
light up.
During the “overcooling” function the working set-point is
reduced by the temperature established with parameter r5;
the operation lasts for the amount of time established with
parameter r6.
During “overcooling” defrosting is never activated; if the
defrosting interval expires when the function is in progress,
defrosting will be activated at the end of the function.
3.8
Defrosting activation in manual mode
1. Make sure that the keyboard is not locked and that no
other operation is in progress; ensure that the
“overcooling” function is not in progress
2. Hold the key down for 4 s.
If the evaporator probe function is that of the defrosting
probe (parameter P3=1) and upon activation of defrosting,
the temperature of the evaporator is higher than that
established with parameter d2, the defrosting function will
not be activated.
3.9
Switch-on/off of the cell light in manual
mode (not available in EVR221, EVR231,
EVR261 and EVR271 models and only if
parameter u0/u1 is set at 0)
1. Make sure no procedures are in progress
2. Press and release the key: the “AUX” LED will
switch on/off.
Using the door digital inputs it is also possible to switch on/
off the cell light by remote; see also parameter u2.
3.10
Switch-on of demister resistors (only in
EVR202, EVR232, EVR204, EVR234, EVR264
and EVR274 models and only if parameter
u0/u1 is set at 1)
1. Ensure that the device is switched on and that no other
procedure is in progress.
2. Hold the key down for 2 s: the “AUX” LED will light
up and the resistors will be switched on, both for the
amount of time established with parameter u6.
Manually switching off the demisting resistors is not permitted
(that is, before the time established with parameter u6
expires).
3.11
Switch-on/off of auxiliary output in manual
mode (only in EVR202, EVR232, EVR204,
EVR234, EVR264 and EVR274 models and
only if parameter u0/u1 is set at 2)
1. Make sure that the keyboard is not locked and that no
procedure is in progress.
2. Press and release the key: the “AUX” LED will
switch on/off.
Using the digital inputs it is also possible to remotely switch
on/off the auxiliary output.
3.12
Locking/unlocking the keyboard
To lock the keyboard:
1.
Make sure no procedures are in progress
2. Hold the key and the key down for 1 s:
the display will show “Loc”.
If the keyboard is locked, the following are not permitted:
-
device switch-on/off in manual mode
- display of evaporator temperature (via the procedure
explained in paragraph 3.4)
- display of the condenser temperature (via the procedure
indicated in paragraph 3.5)
- display the mains voltage
- activation/deactivation of “overcooling” function
- manual activation of defrosting
- manual switch on/off of the auxiliary output
- activation of operation for low of high percentage of
relative humidity and learning the kind of operation
- see information regarding the HACCP alarms
- cancellation of HACCP alarm list
- display of compressor operation hours
- cancellation of compressor operation hours
- changing the working set-point (with the procedure
described in 8.1).
The operations cause the display of the label “Loc” per 1
sec.
To unlock the keyboard:
1.
Hold the key and thee key down for 1 s: the
display will show the message “UnL” for 1 sec.
3.13 Silencing the buzzer
To lock the keyboard:
1.
Make sure no procedures are in progress
2. Press a key (the first pressing of the key will not cause
the effect associated with that key).
If parameter u0/u1 is set at 3 (i.e. the utility managed by
the fourth output is the alarm output ) and parameter u4 is
set at 1, pressing the key will also cause the deactivation of
the output.
If parameter u9 is set to 0, the buzzer will not be activated.
4 OPERATION DUE TO LOW OR HIGH
PERCENTAGE OF RELATIVE HUMIDITY (NOT
AVAILABLE IN EVR221, EVR231, EVR261 AND
EVR271 MODELS AND ONLY IF PARAMETER
F0 IS SET AT 5)
4.1 Preliminary notes
During operation for low percentage of relative humidity, the
evaporator ventilator will be switched on if the compressor is
switched off (parameter F4 determines the amount of time
it is switched off while parameter F5 determines the amount
of time it is switched on).
During operation for a high percentage of relative humidity
the evaporator fan is always on.
4.2
Activation of operation for low or high
percentage relative humidity in manual mode.
1. Make sure that the keyboard is not locked and that no
procedure is in progress.
2. Hold the key and thee key down for 4 s: the
display will show “rhL” (operation for low percentage
of relative humidity) or “rhH” (operation for high per-
centage of relative humidity) for 10 sec.
To restore the normal display before the operation is
complete:
3.
Press a key.
Activation of the operation for a low or high percentage of
relative humidity can be done using parameter F6.
If the parameter F0 is not set at 5, pressing the and keys
will cause the display of the “- - -“ indication for 1 s.
4.3
Learning the type of operation in progress
1. Make sure no procedures are in progress
2. Press and release the key and the.. key: the display
will show “rhL” (operation for low percentage of relative
humidity) or “rhH” (operation for high percentage of
relative humidity) for 10 sec.
To restore the normal display before the operation is
complete:
3.
Press a key.
If parameter F0 is not set at 5, pressing the and
keys will cause:
-
the display of the message “- - - -“ for 1 sec if the
keyboard is not locked
- display of the label “Loc” for 1 sec if the keyboard is
locked.