AKO AKO-57625 Instructions - Page 2

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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).
Configuration push-button
Pre-alarm jumper
Pre-alarm enabled
Pre-alarm disabled
Delay and alarm
levels configuration
Connection strip
Alarm delay
ON
ON
Without
180 s
delay
1
2
1
2
Wiring
Connection to alarm station
Alarm
RS485
NC
C
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.
Red
OFF
No alarms
ON
Alarm / Pre-Alarm activated
Flashing*
Alarm / Pre-Alarm saved
Detector error
Flash*
*Flashing: 0.5 s ON / 0.5 s ON / Flash: 0.1 s ON / 0.8 s OFF
The AKO-57625 detector cannot operate at temperatures below -10 ºC.
IMPORTANT
The presence of R1234ze gas at temperatures below -10 ºC can irreversibly damage the detector.
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.
Alarm levels
ON
By
2nd set
default
of levels
1
2
Input x
NO
Indicators
Green
Detector turned off
Standard operation
Standard operation, acoustic
alarm disabled
Detector in initialisation
process
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.
DEFAULT LEVELS
PRE-ALARM
1000 ppm
IMPORTANT
detector, it may be permanently damaged. If a test is necessary, release the gas at a
ON
minimum distance of 1 meter from the detector.
1
2
GAS
Alarm station
Blue
1st set of levels activated
2nd set of levels activated
MAINTENANCE mode
activated
SET HOLD mode activated
GASES DETECTED
R-1234ze
SECOND SET OF LEVELS
ALARM
PRE-ALARM
1500 ppm
2000 ppm
: Do not release pure R1234ze refrigerant gas in the vicinity of the
Independent operation
RS485
12 - 30 Vdc
Red: Alarms
Mute
push-button
Audible alarm
Pre-Alarm
Alarm
Intermittent
Bi-tonal
sound
sound
Alarm relay
Pre-Alarm
Alarm
NC
C
NO
NC
C
ALARM
4000 ppm
Alarm
NC
C
NO
Gas
Alarm
Green:
Operation
Blue: Operating
mode
Sensor error
3 tones
every 2 minutes
Sensor error
NO
NC
C
NO