EVCO EK820AP7 User Manual

Page 2

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During this cycle the display DY1 displays the temperature read by the needle probe, if the

conditions permit it (the temperature read by the needle probe must be below the quick cool-

ing/freezing for temperature enabling setpoint) the display DY2 displays the decrease of the

quick cooling for temperature maximum length and the LED L12 flashes to indicate that the

count of the time is running; keeping pushed the key T10 the display DY2 displays the fraction

of time passed from the moment in which the instrument activates the cycle.
The output K 1 is associated to the compressor and to the quick cooling setpoint, it remains

activated continuously as long as the temperature read by the cabinet probe reaches the quick

cooling setpoint and when it rises above the quick cooling setpoint of the hysteresis value

(differential) the output gets reactivated, except during a defrost and a dripping.
The output K 2 is associated to the evaporator fans and it is forced to the status ON, except

during a defrost cycle.
A defrost cycle provides three phases (defrost, dripping and evaporator fans stoppage) con-

nected in cascade since the end of one automatically determines the passage to the following

one.
The output K 3 is associated to the defrost and it remains continuously activated during the

defrost as long as the temperature read by the evaporator probe reaches the defrost stopping

setpoint when the defrost ends and the instrument automatically moves to the dripping; if the

instrument was set to manage defrost to resistances (electrical) during a defrost the output K

1 gets forced to the status OFF and the output K 2 functioning gets established with the param-

eters of the family F, if the instrument was set to manage hot gas defrost (reversal of cycle)

during a defrost the output K 1 remains continuously activated and the output K 2 functioning

gets established with the parameters of the family F, if the instrument was set to manage air

defrost (open door) during a defrost the output K 1 gets forced to the status OFF and the output

K 2 gets forced to the status ON.
Passed the dripping length from the moment of the defrost end the instrument automatically

moves to the evaporator fans stoppage; if the instrument was set to manage defrost to

resistances (electrical) or hot gas defrost (reversal of cycle) during a dripping the outputs K 1

and K 2 get forced to the status OFF, if the instrument was set to manage air defrost (open

door) during a dripping the output K 1 gets forced to the status OFF and the output K 2 gets

forced to the status ON.
Passed the evaporator fans stoppage length from the moment of the dripping end the defrost

cycle ends; if the instrument was set to manage defrost to resistances (electrical) or hot gas

defrost (reversal of cycle) during an evaporator fans stoppage the output K 2 activation gets

disabled, if the instrument was set to manage air defrost (open door) during an evaporator

fans stoppage the output K 2 gets forced to the status ON.
Activating the door switch digital input the instrument interacts on the outputs activity accord-

ing what established with the parameters of the family u.
Activating the locking digital input the locking digital input alarm gets activated.
When the temperature read by the needle probe falls below the quick cooling for temperature

stopping setpoint the cycle ends and the successful quick cooling/freezing for temperature

signal gets activated; keeping pushed the key T10 the display DY1 displays the temperature

read by the cabinet probe.
Passed the quick cooling for temperature maximum length, if the temperature read by the

needle probe is above the quick cooling for temperature stopping setpoint the unsuccessful

quick cooling/freezing alarm gets activated; keeping pushed the key T10 the display DY2 dis-

plays the fraction of time passed from the moment of the quick cooling for temperature maxi-

mum length end.
ADDITIONAL INFORMATIONS
-

for the whole period of a corrupted memory data alarm the quick cooling for tem-

perature cycle activation is refused

for the whole period of a locking digital input alarm the quick cooling for tempera-

ture cycle activation is refused

for the whole period of a needle probe failure alarm the quick cooling for tempera-

ture cycle activation is refused

for the whole period of a cabinet probe failure alarm the quick cooling for tempera-

ture cycle activation is refused

for the whole period of a door switch digital input alarm the quick cooling for tem-

perature cycle activation is refused

during a quick cooling for temperature cycle the instrument never automatically

presents a request of a defrost cycle, except what established with the parameter

d4.

QUICK COOLING FOR TIME CYCLE
Pushing and releasing the key T4 during the status STAND-BY the cycle gets selected, except

during the configuration parameters setting procedure; the LED L4 is associated to the quick

cooling cycle, it is turned ON when the cycle is selected and it is turned OFF when the cycle is

not selected.
Pushing and releasing the key T10 the quick cooling for time modality gets selected; the LED

L11 is associated to the quick cooling for time modality, it is turned ON when the modality is

selected and it is turned OFF when the modality is not selected.
To modify the quick cooling for time length push and release over and over the key T1 or T2 as

long as the display DY2 displays the desired value (keeping pushed the key T1 or T2 the value

gets decreased or increased more quickly).
Pushing and releasing the key T3 the cycle gets activated; the LED L1 is associated to the quick

cooling/freezing, it is turned ON when the quick cooling/freezing is running and it is turned OFF

when the quick cooling/freezing is not running.
During this cycle the display DY1 displays the temperature read by the cabinet probe, the

display DY2 displays the decrease of the quick cooling for time length and the LED L12 flashes

to indicate that the count of the time is running; keeping pushed the key T10 the display DY2

displays the fraction of time passed from the moment in which the instrument activates the

cycle.
The outputs K 1, K 2 and K 3 get activated with the same functioning saw in the case of quick

cooling for temperature cycle.
Activating the door switch digital input the instrument interacts on the outputs activity accord-

ing what established with the parameters of the family u.
Activating the locking digital input the locking digital input alarm gets activated.
Passed the quick cooling for time length the cycle ends and the quick cooling/freezing for time

ended signal gets activated.

ADDITIONAL INFORMATIONS
-

for the whole period of a corrupted memory data alarm the quick cooling for time

cycle activation is refused

for the whole period of a locking digital input alarm the quick cooling for time cycle

activation is refused

for the whole period of a cabinet probe failure alarm the quick cooling for time

cycle activation is refused

for the whole period of a door switch digital input alarm the quick cooling for time

cycle activation is refused

during a quick cooling for time cycle the instrument never automatically presents a

request of a defrost cycle, except what established with the parameter d4.

QUICK FREEZING FOR TEMPERATURE CYCLE
Pushing and releasing the key T5 during the status STAND-BY the cycle gets selected, except

during the configuration parameters setting procedure; the LED L5 is associated to the quick

freezing cycle, it is turned ON when the cycle is selected and it is turned OFF when the cycle is

not selected.
Pushing and releasing the key T10 the quick freezing for temperature modality gets selected;

the LED L10 is associated to the quick freezing for temperature modality, it is turned ON when

the modality is selected and it is turned OFF when the modality is not selected.
Pushing and releasing the key T3 the cycle gets activated; the LED L1 is associated to the quick

cooling/freezing, it is turned ON when the quick cooling/freezing is running and it is turned OFF

when the quick cooling/freezing is not running.
During this cycle the display DY1 displays the temperature read by the needle probe, if the

conditions permit it (the temperature read by the needle probe must be below the quick cool-

ing/freezing for temperature enabling setpoint) the display DY2 displays the decrease of the

quick freezing for temperature maximum length and the LED L12 flashes to indicate that the

count of the time is running; keeping pushed the key T10 the display DY2 displays the fraction

of time passed from the moment in which the instrument activates the cycle.
The output K 1 is associated to the compressor and to the quick freezing setpoint, it remains

activated continuously as long as the temperature read by the cabinet probe reaches the quick

freezing setpoint and when it rises above the quick freezing setpoint of the hysteresis value

(differential) the output gets reactivated, except during a defrost and a dripping.
The outputs K 2 and K 3 get activated with the same functioning saw in the case of quick

cooling for temperature cycle.
Activating the door switch digital input the instrument interacts on the outputs activity accord-

stopping setpoint the cycle ends and the successful quick cooling/freezing for temperature

signal gets activated; keeping pushed the key T10 the display DY1 displays the temperature

read by the cabinet probe.
Passed the quick freezing for temperature maximum length, if the temperature read by the

needle probe is above the quick freezing for temperature stopping setpoint the unsuccessful

quick cooling/freezing alarm gets activated; keeping pushed the key T10 the display DY2 dis-

plays the fraction of time passed from the moment of the quick freezing for temperature maxi-

mum length end.
ADDITIONAL INFORMATIONS
-

for the whole period of a corrupted memory data alarm the quick freezing for tem-

perature cycle activation is refused

for the whole period of a locking digital input alarm the quick freezing for tempera-

ture cycle activation is refused

for the whole period of a needle probe failure alarm the quick freezing for tempera-

ture cycle activation is refused

for the whole period of a cabinet probe failure alarm the quick freezing for tempera-

ture cycle activation is refused

for the whole period of a door switch digital input alarm the quick freezing for

temperature cycle activation is refused

during a quick freezing for temperature cycle the instrument never automatically

presents a request of a defrost cycle, except what established with the parameter

d4.

QUICK FREEZING FOR TIME CYCLE
Pushing and releasing the key T5 during the status STAND-BY the cycle gets selected, except

during the configuration parameters setting procedure; the LED L5 is associated to the quick

freezing cycle, it is turned ON when the cycle is selected and it is turned OFF when the cycle is

not selected.
Pushing and releasing the key T10 the quick freezing for time modality gets selected; the LED

L11 is associated to the quick freezing for time modality, it is turned ON when the modality is

selected and it is turned OFF when the modality is not selected.
To modify the quick freezing for time length push and release over and over the key T1 or T2 as

long as the display DY2 displays the desired value (keeping pushed the key T1 or T2 the value

gets decreased or increased more quickly).
Pushing and releasing the key T3 the cycle gets activated; the LED L1 is associated to the quick

cooling/freezing, it is turned ON when the quick cooling/freezing is running and it is turned OFF

when the quick cooling/freezing is not running.
During this cycle the display DY1 displays the temperature read by the cabinet probe, the

display DY2 displays the decrease of the quick freezing for time length and the LED L12 flashes

to indicate that the count of the time is running; keeping pushed the key T10 the display DY2

displays the fraction of time passed from the moment in which the instrument activates the

cycle.
The outputs K 1, K 2 and K 3 get activated with the same functioning saw in the case of quick

freezing for temperature cycle.
Activating the door switch digital input the instrument interacts on the outputs activity accord-

ing what established with the parameters of the family u.
Activating the locking digital input the locking digital input alarm gets activated.
Passed the quick freezing for time length the cycle ends and the quick cooling/freezing for time

ended signal gets activated.

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