Page 70
Rev 3 Service Manual MCC Hot / Cold 2021
EWPlus EO LVD
7/12
PAR. DESCRIPTION
RANGE
M.U.
EWPlus 961 EO LVD
EWPlus 971 EO LVD
EWPlus 974 EO LVD
AP1 AP2 AP3 AP4 AP1 AP2 AP3 AP4 AP1 AP2 AP3 AP4
SEt Temperature control SEtpoint.
The SEtpoint is visible from the "machine status" menu only.
LSE ... HSE
°C/°F
3,5
3,5
3,5
3,5
3,5
1,5
1,0
3,5
3,5
1,5
1,0
2,0
COMPRESSOR ("CP" folder)
diF diFferential. Compressor relay activation differential.
N.B.: diF cannot be equal to 0.
0,1 ... 30,0
°C/°F
2,0
2,0
2,0
2,0
2,0
4,0
2,0
2,0
2,0
4,0
2,0
8,0
HSE Maximum value that can be assigned to the Setpoint.
N.B.: The two Setpoints
are interdependent: HSE cannot be less than LSE and vice-versa.
LSE ... 320
°C/°F
99,0 99,0 99,0 99,0 99,0 99,0 99,0 99,0 99,0 99,0 99,0 99,0
LSE Minimum value that can be assigned to the Setpoint.
N.B.: The two Setpoints
are interdependent: LSE cannot be higher than HSE and vice-versa.
-67,0 ... HSE
°C/°F
-50,0 -50,0 -50,0 -50,0 -50,0 -50,0 -50,0 -50,0 -50,0 -50,0 -50,0 -50,0
Ont
Controller on time for faulty probe.
- if
Ont
= 1 and
OFt
= 0, the compressor remains ON,
- if
Ont
> 0 and
OFt
> 0, it runs in duty cycle mode.
0 ... 250
min
0
0
0
0
0
1
0
0
0
1
0
0
OFt
Controller off time for faulty probe.
- if
OFt
= 1 and
Ont
= 0, the compressor remains OFF,
- if
Ont
> 0 and
OFt
> 0, it runs in duty cycle mode.
0 ... 250
min
1
1
1
1
1
1
1
1
1
1
1
1
dOn Compressor relay activation delay after request.
0 ... 250
secs
0
0
0
0
0
15
0
0
0
15
0
10
dOF Delay after switching off and subsequent activation.
0 ... 250
min
0
0
0
0
0
3
0
0
0
3
0
2
dbi Delay between two consecutive compressor activations.
0 ... 250
min
0
0
0
0
0
0
0
0
0
0
0
2
OdO
(!)
Delay in activating outputs after the instrument is switched on or after a
power failure.
0 = not active
0 ... 250
min
0
0
0
0
0
0
0
0
0
0
0
0
dFA Delay time in activating compressor and condenser fans after request
0 ... 255
secs
0
0
0
0
0
0
0
0
0
0
0
10
DEFROST ("dEF" folder)
dty
Type of defrost.
0= electric defrost - compressor OFF during defrost cycle
1= cycle inversion defrost (hot gas) - compressor ON during defrost cycle
2= ‘Free’: defrosting independently of compressor
0/1/2
num
0
0
1
0
0
0
1
0
dit Interval between the start of two consecutive defrost cycles.
0 = function disabled (
defrosting NEVER performed
)
0 ... 250
hours
24
24
24
24
24
2
6
24
24
2
6
10
dCt
Selects the count mode for the defrost interval:
0 = compressor hours of operation (DIGIFROST® method);
Defrost active ONLY when the compressor is on.
N.B.: compressor operation time is counted separately from
the evaporator probe (count active also when evaporator probe
missing or faulty).
1 = appliance running hours = the defrost count is always active when the
machine is on and starts at each power-on;
2 = compressor stop Every time the compressor stops, a defrost cycle is
performed according to parameter dtY;
3 = temperature
0/1/2/3
num
1
1
1
1
1
0
1
1
1
0
1
1
dOH Defrost start delay time after request.
0 ... 59
min
0
0
0
0
0
0
0
0
0
0
0
0
dEt Defrost time-out; determines the maximum defrost duration.
1 ... 250
min
30
30
30
30
30
30
30
30
30
30
30
45
dSt Defrost end temperature (determined by the evaporator probe).
-67,0 ... 320
°C/°F
8,0
3,0
8,0
8,0
8,0
3,0
8,0
7,0
dPO
Determines whether the instrument must enter defrost mode (if the
temperature measured by the evaporator allows this operation).
n
= no, does not start defrosting at start-up;
y
= yes, starts defrost at start-up.
n/y
flag
n
n
n
n
n
n
n
n
n
n
n
y
dSE Temperature threshold for start of defrost.
-67,0 ...320
°C/°F
0,0
0,0
0,0
0,0
0,0
-6,0
0,0
0,0
0,0
-6,0
0,0
-6,0
dtt Time for which the temperature of the evaporator must remain below
dSE
.
0 ... 255
min
0
0
0
0
0
0
0
0
0
0
0
0
FAN REGULATOR
("FAn" folder)
FPt Characterizes the "FSt" parameter that can be expressed or as an absolute
temperature value or as a value related to Setpoint.
0
= absolute;
1
= relative.
0/1
flag
0
0
0
0
0
0
0
0
FSt
Fan lock temperature; if
Pb2 > FSt
, the fans are stopped.
The value is either positive or negative and, depending on parameter
FPt
, can
be either the absolute temperature or the temperature relative to the Setpoint.
-67,0 ... 320
°C/°F
50,0 -20,0 50,0 50,0 50,0 -20,0 50,0 50,0
FAd Fan starting differential (see parameters
FSt
and
Fot
).
1,0 ... 50,0
°C/°F
2,0
1,0
2,0
2,0
2,0
1,0
2,0
1,0
Fdt Delay time in activating fans after a defrost operation.
0 ... 250
min
0
0
0
0
0
0
0
0
dt
drainage time. Dripping time.
0 ... 250
min
0
0
0
0
0
0
0
0
dFd Allows to select the evaporator fans exclusion during defrost.
y
= yes;
n
= no.
n/y
flag
y
y
y
y
y
y
y
y
FCO
Evaporator fans operating mode. The state of the fans will be:
DAY
NIGHT
H42 FCO COMPRESSOR
ON
COMPRESSOR
OFF
COMPRESSOR
ON
COMPRESSOR
OFF
H42 = y
0 Regulated by Pb2
OFF
Regulated by Pb2
OFF
1 Regulated by Pb2 Regulated by Pb2 Regulated by Pb2 Regulated by Pb2
2 Regulated by Pb2 Dutycycle Day Regulated by Pb2 Dutycycle Night
3
Dutycycle Day
Dutycycle Day
Dutycycle Night Dutycycle Night
H42 = n
0
ON
OFF
ON
OFF
1
ON
Dutycycle Day
ON
Dutycycle Night
2
ON
Dutycycle Day
ON
Dutycycle Night
3
Dutycycle Day
Dutycycle Day
Dutycycle Night Dutycycle Night
Dutycycle Day
: controlled by means of parameters “
Fon
” and “
FoF
”.
Dutycycle Night
: controlled by means of parameters “
Fnn
” and “
FnF
”.
0/1/2/3
num
3
0
3
3
3
0
3
1
FdC Evaporator fans switch-off delay after compressor disabled.
0 ... 99
min
1
0
1
1
1
0
1
0
Fon Fans ON time in duty cycle. Fans used in duty cycle mode; valid when
FCO = dc
and
H42=1
(Pb2 probe present)
0 ... 250
secs*10
12
2
12
12
12
2
12
2
FoF Fans OFF time in duty cycle. Fans used in duty cycle mode; valid when
FCO = dc
and
H42=1
(Pb2 probe present)
0 ... 250
secs*10
6
1
6
6
6
1
6
1
TABLE OF "INSTALLER" MENU PARAMETERS
Содержание Cold MCC
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