Evco EK825AP7 Manual de usuario descargar pdf

GENERAL CHARACTERISTICS

* Frontal size: 72 x 144 mm (2.83 x 5.66 ").

* Power supply: 230 Vca.

* Six easy selectable cycles of functioning: quick-cooling, cold-stor-

ing, quick-cooling and cold-storing, quick-freezing, very cold-stor-

ing, quick-freezing and very cold-storing.

* Adapt to manage quick-cooling/freezing for temperature or time.

* Alarm buzzer included.

* One 3-digit 12.5 mm (0.49 ") high red LED display showing the

temperature read by the needle/cabinet probe.

* One 3-digit 12.5 mm (0.49 ") high red LED display showing the

remaining time at the end of a cycle/phase of quick-cooling/freezing.

* Adapt to manage electrical, hot gas and air defrost (automatic and

manual).

* Three measure inputs (cabinet, evaporator and needle probe) for

PTC probe.

* One configurable door-switch digital input.

* One configurable locking digital input.

* Four relay outputs of which one 16 (2) A @ 250 Vac relay for one 1½

HP compressor (NO) management and three 6 (2) A @ 250 Vac relays

for evaporator fans (NO), defrost system (resistances or by-pass

valve, change-over) management and cabinet light control (NO).

EK 825A is an ON-OFF digital controller studied for quick-cooler/freezer management through the compressor, evaporator fans, defrost (for time-

temperature) and cabinet light output control.

The instrument basically permits the control, according with the established parameters, automatic cycles of quick cooling/freezing of (pre-cooked

or at environmental temperature) food temperature, using the compressor at its best, in order to preserve the product quality.

The controller has principally six different cycles of functioning configurable according with the norms and selectable through the keys located

on the frontal panel:

quick-cooling (for temperature or time), during which the instrument regulates the quick-cooling of food temperature, verifying that it happens

within the maximum established time

cold-storing, during which the instrument works as a normal thermostat (with evaporator fans and defrost management) and regulating the

cabinet temperature at the established value

quick-cooling (for temperature or time) and cold-storing, during which the instrument at fist executes the phase of quick-cooling and at its

end automatically moves to the phase of cold-storing

quick-freezing (for temperature or time), similar to the cycle of quick-cooling

very cold-storing, similar to the cycle of cold-storing

quick-freezing (for temperature or time) and very cold-storing, during which the instrument at first executes the phase of quick-freezing and

at its end automatically moves to the phase of very cold-storing.

In order to assure a correct execution of a cycle/phase of quick-cooling/freezing for temperature of pre-cooked (hot) food temperature it is necessary

that the needle probe is properly positioned inside the product: so, the instrument, at the beginning of the cycle, executes a test to verify the

proper insertion of the needle probe; the overcoming of this test permits the execution of the cycle/phase, contrary some alarm signals gets

activated.

The four outputs of which one 16 (2) A @ 250 Vac relay with NO contact (compressor output) and three 6 (2) A @ 250 Vca relays with NO contact

(evaporator fans and cabinet light output)) and change-over contact (defrost output) permit the direct management of loads, in small power

refrigeration systems, without using auxiliary relays.

The device is provided of two temperature alarms (that can be disabled): the intervention of this kind of alarm activates the alarm buzzer with intermittent

beep and the contemporary showing on the display of a proper temperature value bur alternated to an alarm code.

Others alarm conditions (not proper kind of probe, defective probe, wrong connection, temperature outside the limits permitted by the used probe,

etc.), activate the alarm buzzer with intermittent and the contemporary showing on the display of univocal alarm codes that permit a sudden

intervention aganist the causes of failure.

ON-OFF DIGITAL CONTROLLER FOR QUICK-

COOLER/FREEZER MANAGEMENT

EK 825A

1 2 3 4 5 6 ... 13 14

Indice de contenidos

Pagina 1 - COOLER/FREEZER MANAGEMENT

1GENERAL CHARACTERISTICS* Frontal size: 72 x 144 mm (2.83 x 5.66 ").* Power supply: 230 Vca.* Six easy selectable cycles of functioning: quick-co

Pagina 2 - FUNCTIONING:

10PROCEDURE OF CONFIGURATION PARAMETERS PROGRAMMINGThe configuration parameters programming can be done during the status "STOP" only, if th

Pagina 3 - Cycle number 2: Cold-storing:

11CONFIGURATION PARAMETERS (1/2)NOTE CODE PARAMETER DESCRIPTION MIN. MAX. U.M. STAND.(1) PA password -55 99 --- ---/ MEASURE INPUTS(1) /1 calibration

Pagina 4

12CONFIGURATION PARAMETERS (2/2)NOTE CODE PARAMETER DESCRIPTION MIN. MAX. U.M. STAND.(8) u1 door-switch deactivate evaporator fans output 0=NO; 1=YES

Pagina 5 - Hard-Soft quick-cooling:

13INSTALLATIONFor a proper installation take note of the attached indications.Be sure that the conditions of use (environment temperature, humidity, p

Pagina 6 - Manual ventilation:

14ELECTROMECHANICAL CHARACTERISTICSCase: plastic black (PPO), self-extinguishing ABS according with UL 94 V-0.Size: 72 x 144 x 79 mm (2.83 x 5.66 x 3.

Pagina 7

2FUNCTIONING:Pressure on key T 10 determines the start (status "ON", LED L 8 lighted) or the stop (status "STAND-BY", LED L 8 turn

Pagina 8 - Remedies

3is forced to the status ON.When the temperature read by the needle probe reaches the set established with the parameter "c2" the cycle has

Pagina 9 - ALARMS (3/3)

4When the phase of quick-cooling ends (it is related in Cycle number 1b) the instrument moves to the phase of cold-storing (it is related in Cyclenumb

Pagina 10 - How to leave the PROCEDURE

5Cycle number 5: Very cold-storing:Push the key T 4 to select this cycle and the key T 10 to start it: the LED L 1 turning on.The indicators DY 1 and

Pagina 11

6Door-switch input (dedicated parameters u0, u1, u2):The instrument is provided of a door-switch input which activation does not end a cycle on run bu

Pagina 12

7Signalsthe LED L 1 is lightedthe LED L 2 is lightedthe LED L 3 is lightedthe LED L 4 is lightedthe LED L 5 is lightedthe LED L 6 is lightedthe LED L

Pagina 13 - Electrical connections

8Alarmson the indicator DY 1 flashesthe indication "E3" alternated to atemperature value and the buzzeris activated with intermittent beep(n

Pagina 14

9Alarmson the indicator DY 1 appearsa temperature value, on the indi-cator DY 2 flashes the indica-tion "---" and the buzzer is acti-vated