AKO-57624 Refrigerant Gas Detector
Product Information
The AKO-57624 refrigerant gas detector is a device that is used
to detect the presence of gases like R-32, R-454A, R-454C, R-455A,
R-1234YF. The detector should be installed in a place protected
from vibrations, water, and corrosive gases. It should be kept in
an environment free of chemical agents and gases from fermentations
or ripening of fruits. The detector supervises a point and not an
area. If perimeter supervision is required, several sensors should
be installed around that area. The AKO-57624 refrigerant gas
detector may only be used in locations that have not been
classified with the risk of explosion.
Product Usage Instructions
- Read and understand the general warnings and working conditions
mentioned in the user manual before using the AKO-57624 refrigerant
gas detector. - Select the installation option either by screws or adhesive as
per the requirement. - Connect the detector following the wiring diagrams given in the
user manual. Always disconnect the power supply before doing the
wiring. - The wiring between the detector/transmitter and the station
should NEVER be installed in a conduit together with power,
control, or supply cables. - Ensure that you comply with current local regulations while
connecting the power supply of the alarm. - The AKO-57624 refrigerant gas detector supervises a point and
not an area. Install several sensors if perimeter supervision is
required. - In the event of an alarm or pre-alarm in process, any
push-button press silences the alarm/pre-alarm tone. Any
push-button press deletes saved alarms.
5762H402 Ed.04
Instructions
AKO-57624
Installation
2
1
en General warnings
-Using the unit without observing the manufacturer’s instructions may alter the appliance’s safety requirements.
– Detectors should be installed in a place protected from vibrations, water and corrosive gases, where the ambient temperature does not exceed the value indicated in the technical data.
– Detectors supervise a point and not an area. If the gas leak does not reach the sensor, or the level of concentration in that point does not reach the alarm values, no alarm will be activated. If perimeter supervision is required, several sensors should be installed around that area.
Working conditions:
-Keep the detector work environment free of chemical agents (such as solvent, paints, alcohol, acetone, silicone, etc.), and free of engine fumes or gases from fermentations (bread, pizza) or ripening (breathing) of fruits.
-The detector should generally be installed in an area of potential concentration/accumulation of gas, in low positions (due to the greater relative density, in relation to air, of the gases subject to detection).
-The AKO-57624 refrigerant gas detector may only be used in locations that have not been classified with risk of explosion. -Reference regulations: EN 378 -Applicable local regulations: Compliance must be ensured
Option A
Fixed by screws
3
36 mm 70 mm
x2
Ø 2,8 mm
+
x2
Ø 5 mm
Option B
Fixed by an adhesive
3.3
Connect following the diagrams
3.2 3.1
Optional rear cable entry
1
AKO ELECTROMECÁNICA , S.A.L. Avda. Roquetes, 30-38 08812 · Sant Pere de Ribes. Barcelona · Spain. www.ako.com
We reserve the right to supply materials that might vary slightly to those described in our Technical Sheets. Updated information is available on our website.
355762402 REV.03 2023
2
Carefully perforate the rear entry so as not to damage the electronic board. This option involves changing from IP68 to IP40.
Technical specifications
Power supply ……………………………………………………………………………………………………………………………………………12-30Vdc Consumption……………………………………………………………………………………………………………Typical: 75 mA, Maximum:150 mA Alarm relay ………………………………………………………………………………………………………………………..SPDT 30Vdc, 2A, cos j =1 Working ambient temperature……………………………………………………………………………………………………………………-25 to 50 ºC Storage ambient temperature…………………………………………………………………………………………………………………….-25 to 60 ºC Range of moisture permitted………………………………………………………………………………………0 – 95 % RH (Without condensation) Protection degree……………………………………………………………………………………………………………………………………………..IP68 Dimensions …………………………………………………………………………………………………………..107 mm (W) x 85 mm (H) x 39 mm (D) Complies with the EN 14624 standard.
Description
Refrigerant gas detector, which can be used in independent operation or connected to alarm stations AKOCam, AKOAlarm and AKOGas. Independent detector: The detector makes a certain warning sound in the event of an Alarm, Pre-Alarm or sensor error and the red indicator lights up (See operation section). Detector connected to the alarm station: The detector notifies the station of its status (Alarm, Pre-Alarm or sensor error) and the station notifies the alarm through sound and indicators (for further information consult the station’s manual).
Tr + Tr Gnd 15V S Gnd 15V In Gnd Tr + Tr Gnd 15V S Gnd
Configuration push-button Pre-alarm jumper Pre-alarm enabled
Pre-alarm disabled
Delay and alarm levels configuration
Connection strip
Alarm delay
Without ON delay
12
ON
180 s
12
Wiring
Connection to alarm station
RS485
Alarm
NC C NO
Alarm levels
By
ON
default
12
2nd set ON of levels
12
Always disconnect the power supply to do the wiring.
The wiring between the detector/transmitter and the station should NEVER be installed in a conduit together with power, control or supply cables. Cables for wiring the relay contact should have an adequate section depending on the unit to be connected. Certain international standards maintain that the power supply of the alarm should originate from a different circuit to that used by the refrigeration and ventilation system. Please ensure that you comply with current local regulations.
GASES DETECTED
R-32, R-454A, R-454C, R-455A, R-1234YF
DEFAULT LEVELS
SECOND SET OF LEVELS
PRE-ALARM
ALARM
PRE-ALARM
ALARM
1000 ppm
1500 ppm
2000 ppm
4000 ppm
Second alarm set is recommended for R-32 and R-1234YF refrigerants.
Input x
GAS
Alarm station
Independent operation
RS485
12 – 30 Vdc
Alarm NC C NO
Gas Alarm
Operation
Mute push-button In the event of an Alarm or Pre-Alarm in process, any push-button press silences the Alarm/Pre-Alarm tone. Any push-button press deletes saved alarms.
Medium press (between 3 and 9 sec.): It activates or deactivates the SET-HOLD mode. Should there be a sensor error, reset the detector.
Long press (> 9 sec.): It activates or deactivates the MAINTENANCE mode. Should there be a sensor error, reset the detector.
Indicators
Red
Green
Blue
OFF
No alarms
Detector turned off
1st set of levels activated
ON
Alarm / Pre-Alarm activated Standard operation 2nd set of levels activated
Pre-Alarm Intermittent
sound
Flashing*
Alarm / Pre-Alarm saved
Standard operation, acoustic alarm disabled
MAINTENANCE mode activated
Pre-Alarm
Red: Alarms Mute push-button
Audible alarm Alarm Bi-tonal sound
Alarm relay Alarm
Green: Operation Blue: Operating mode
Sensor error 3 tones
every 2 minutes Sensor error
Flash*
Detector error
Detector in initialisation process
SET HOLD mode activated
NC C NO
NC C NO
NC C NO
*Flashing: 0.5 s ON / 0.5 s ON / Flash: 0.1 s ON / 0.8 s OFF
Configuration
In this mode the acoustic alarm can be activated / deactivated or the detector can be returned to factory settings. To activate it:
1.- Disconnect the power supply, reconnect it and press the “CONFIGURATION” push-button 5 times within 2 minutes; the detector will emit a confirmation beep and the blue indicator will show the status of the acoustic alarm: ON: Acoustic alarm enabled / Flashing: Acoustic alarm disabled.
2.- Press the Mute push-button to enable / disable the acoustic alarm. 3.- Press the “CONFIGURATION” push-button for 5 seconds to save the changes and exit the configuration mode; the detector will make 5 short beeps.
Optionally, you can return the detector to its factory settings.To do so, press the “CONFIGURATION” push-button 5 times before step 3.
Pre-alarm jumper Allows for Pre-alarm detection to be enabled / disabled. Before using this option, ensure that regulations allow for two alarm levels.
SET-HOLD mode Prevents false alarms when charging or cleaning the chambers. While this mode is activated, pre-alarms will not signal and alarms will signal as pre-alarms when faced with all effects (sound, relay activation and signalling).This mode will remain active for a maximum of 5 hours, then will deactivate automatically.
Maintenance mode Disables gas pre-alarms and alarms for 1 hour for maintenance tasks.While this mode is activated, no gas pre-alarm or alarm will sound.
Industrial refrigeration: control and safety | AKO Group
