EVCO EVK204N9 User Manual

Page 2

Evco S.p.A. • Code 104K204E05 • page 2/5

• press
• press

within 15 s to set “149”

• press

or do not operate the keypad for 15 s: the display will flash
"dEF" for 4 s, after which the device will exit the proce-
dure

• interrupt the power to the device.
Ensure that the parameter default values are appropriate,
particularly if the probes are PTC type.
4

HACCP

4.1 Introductory comments
The device is capable of storing up to 3 HACCP alarms.
The device can furnish the following information:
• the critical value
• the alarm duration (from 1 minute to 99 hours and 59 minutes,

partial if the alarm is ongoing).

CODE ALARM TYPE (AND CRITICAL VALUE)

minimum temperature alarm (the minimum temperature
of the cabinet or the minimum temperature detected by
the auxiliary probe during an any alarm state of this type)

maximum temperature alarm (the maximum temperature
of the cabinet or the maximum temperature detected by
the auxiliary probe during an any alarm state of this type)

microport input alarm (the maximum temperature of the
cabinet during an any alarm state of this type); see also
parameter i4

Warnings:
• the device records minimum temperature alarms and

maximum temperature alarms providing the temperature
associated with the alarm is the cabinet temperature
(parameters A0 and A3 = 0) or the temperature measured
by the auxiliary probe, providing its function is that of
display probe (parameter P4 = 1 and parameters A0 = 2
and A3 = 1)

• the instrument updates the information on the alarms

on condition that the critical value is more critical than
the one the instrument has stored or on condition that
the information has already been displayed

• no alarms will be recorded if the device is in stand-by

mode.

When the cause of the alarm is resolved, the display returns to normal.
The HACCP LED provides information relating to the status of the
HACCP alarm memory; please refer to paragraph 6.1.
4.2 Viewing HACCP alarm information
To access the procedure:
• ensure the keyboard is not blocked and that no procedures are

running

• press

for 2 s: the display will show the first available label

• press

to select “LS”

• press

the display will show one of the codes reported in the
table in paragraph 4.1.

To select an alarm:
• press

(to select "AH" for example).

To display the information relating to the alarm:
• press

the HACCP LED will stop flashing and remain on and the
display will show the following information in succes-
sion (for example):

INFO

MEANING

8,0

the critical value is 8.0 °C/8 °F

dur

the display is about to show the alarm duration

h01

the alarm lasted for 1 hour (continued ...)

n15

the alarm lasted for 1 hour and 15 minutes

the selected alarm

The display shows each piece of information for 1 s.
To exit the information series:
• press

the display will show the selected alarm.

To exit the procedure:
• exit the information series
• press

until the display shows the quantity assigned by
parameter P5 or do not operate the keypad for
60 s.

Alternatively:
• exit the information series
• press
If the instrument has stored no alarm, the label “LS” will not be shown.
4.3 Deleting the HACCP alarm list
• ensure the keyboard is not blocked and that no procedures are

running

• press

for 2 s: the display will show the first available label

• press

to select “rLS”

• press
• press

within 15 s to set “149”

• press

or do not operate the keypad for 15 s: the display will flash
"- - - -" for 4 s and the HACCP LED will be turned off, after
which the device will exit the procedure.

If the instrument has stored no alarm, the label “rLS” will not be shown.
5

COMPRESSOR OPERATION TIME COUNTER

5.1 Introductory comments
The device is capable of recording up to 9,999 hours of compressor
function, after which the number "9999" flashes.
5.2 Displaying the compressor operation time
• ensure the keyboard is not blocked and that no procedures are

running

• press

for 2 s: the display will show the first available label

• press

to select “CH”

• press
To exit the procedure:
• press

or do not operate the keypad for 60 s

• press

until the display shows the quantity assigned by
parameter P5 or do not operate the keypad for
60 s.

Alternatively:
• press
5.3 Resetting the compressor operation time
• ensure the keyboard is not blocked and that no procedures are

running

• press

for 2 s: the display will show the first available label

• press

to select rCH”

• press
• press

within 15 s to set “149”

• press

or do not operate the keypad for 15 s: the display will flash
"- - - -" for 4 s, after which the device will exit the procedure.

INDICATORS

6.1 Indicators

LED

MEANING
compressor LED
if on then the compressor is on
if flashing:
• the operational setpoint is being changed
• compressor protection is ongoing (parameters C0, C1,

C2 and i7)

defrosting LED
if on, defrosting ongoing
if flashing:
• defrosting has been requested, but compressor protec-

tion is ongoing (parameters C0, C1 and C2)

• drip-draining is ongoing (parameter d7)
• refrigerant fluid heating is ongoing (parameter dA)
Evaporator fan LED
if on then the evaporator fan is on
if flashing, then evaporator fan stop is ongoing (parameter
F3)

HACCP HACCP LED

if on, you will have not shown all the information on the
HACCP alarms
if flashing, the instrument will have stored at least one new
HACCP alarm
if off, you will have shown all the information on the HACCP
alarms or you will have cancelled the list of the HACCP
alarms
Maintenance LED
if on, compressor maintenance will be required (param-
eter C10)
alarm LED
if on, an alarm state or an error is ongoing
on/stand-by LED
if on, the device is in stand-by mode

degree Celsius LED
if on, the unit of measurement for temperature is degrees
Celsius (parameter P2)
if flashing, then the Energy Saving function is in operation
(parameters r4 and i5)

degree Fahrenheit LED
if on, the unit of measurement for temperature is degrees
Fahrenheit (parameter P2)
if flashing, then the Energy Saving function is in operation
(parameters r4 and i5)
Multifunction LED
parameter u1 is set to 0 (i.e. the service control-
led by the fourth output is the cabinet light)
if on, the cabinet light will have been switched on manu-
ally
if flashing, the cabinet light will have been turned on re-
motely (parameter i0)
parameter u1 is set to 1, 4, 5, 6 or 7
if on, the service controlled by the fourth output will be
turned on
parameter is set to 2 (i.e. the service controlled
by the fourth output is the auxiliary output)
if on, the auxiliary output will have been turned on manu-
ally
if flashing, the auxiliary output will have been turned on
remotely (parameter i5)
parameter u1 is set to 3 (i.e. the service control-
led by the fourth output is compressor 2)
if on, compressor 2 is on
if flashing, compressor 2 delay is ongoing (parameter C9)

CODE MEANING

Loc

the key and/or operational setpoint are blocked (param-
eter r3), refer to paragraph 2.11

- - - -

the quantity for display is not available (e.g. the probe is
absent)

ALARMS

7.1 Alarms

CODE MEANING

Minimum temperature alarm (HACCP alarm)
Remedies:
•check the alarm temperature
• check parameters A0, A1 and A2
Main consequences:
• if parameter A0 is set to 0 or if parameter P4 is set to 1 and

parameter A0 is set to 2, the device records the alarms, on
condition that the instrument has stored no alarm of this
type or on condition that the critical value is more critical
than the one the instrument has stored

• if parameter u1 is set to 4, the alarm output will be acti-

vated

Maximum temperature alarm (HACCP alarm)
Remedies:
• check the alarm temperature
• check parameters A3, A4 and A5
Main consequences:
• if parameter A3 is set to 0 or if parameter P4 is set to 1 and

parameter A3 is set to 1, the device records the alarms, on
condition that the instrument has stored no alarm of this
type or on condition that the critical value is more critical
than the one the instrument has stored

• if parameter u1 is set to 4, the alarm output will be acti-

vated

Microport input alarm (HACCP alarm)
Remedies:
• check the causes which activated the input
• check parameters i0, i1 andi4
Main consequences:
• the outcome set by parameter i0
• if parameter i4 is set to 1, the device records the alarms,

on condition that the instrument has stored no alarm of
this type or on condition that the critical value is more
critical than the one the instrument has stored (however
providing parameter i2 is not set to -1)

• if parameter u1 is set to 4, the alarm output will be acti-

vated

Input malfunction alarm (only if parameter P4 is set to 3)
Remedies:
• check the causes which activated the input
• check parameters i5 and i6
Main consequences:
• if parameter i5 is set to 4, the device will continue to

operate as normal

• if parameter i5 is set to 5, the compressor will be switched

off

• if parameter u1 is set to 4, the alarm output will be acti-

vated

iSd

Device blocked alarm (only if parameter P4 is set to 3)
Remedies:
• check the causes which activated the input malfunction
• switch the device off then on, or disconnect the power

supply

• check parameters i5, i6, i7, i8 and i9
Main consequences:
• the regulators will be switched off
• if parameter u1 is set to 4, the alarm output will be acti-

vated

COH

Condenser overheating alarm (only if parameter P4 is set
to 3)
Remedies:
• check the condenser temperature
• check parameter C6
Main consequences:
• if parameter u1 is set to 4, the alarm output will be acti-

vated

CSd

Compressor blocked alarm (only if parameter P4 is set to 3)
Remedies:
• check the condenser temperature
• switch the device off and then on again: if on switching

back on again the condenser temperature is still above
the value established by parameter C7, it will be neces-
sary to disconnect the power supply and clean the con-
denser

• check parameter C7
Main consequences:
• the compressor and evaporator fan will be switched off
• if parameter u1 is set to 4, the alarm output will be acti-

vated

When the cause that triggered the alarm has been resolved, the device
will restore normal operation, except for the following alarm states:
• the device blocked alarm (code "iSd") which requires the device be

switched off or the power supply disconnected

• the compressor blocked alarm (code "CSd") which requires the

device be switched off or the power supply disconnected.