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
Flashing*
Alarm / Pre-Alarm saved
Standard operation, acoustic
alarm disabled
MAINTENANCE mode
activated
Flash*
Detector error
Detector in initialisation
process
SET HOLD mode activated
Pre-Alarm
Alarm
Sensor error
Intermittent
sound
Bi-tonal
sound
3 tones
every 2 minutes
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).
Pre-alarm jumper
Configuration push-button
Connection strip
Delay and alarm
levels configuration
Pre-alarm enabled
Pre-alarm disabled
Alarm delay
C
C
NC
NC
NO
NO
Gas
Alarm
Tr
-
Tr
-
Tr+
Tr+
Gnd
Gnd
RS485
RS485
Alarm
Alarm
15V
15V
S
S
Gnd
Gnd
Red: Alarms
Green:
Operation
Mute
push-button
Blue: Operating
mode
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.
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.
*
Flashing:
0.5 s ON / 0.5 s ON /
Flash:
0.1 s ON / 0.8 s OFF
GASES DETECTED
DEFAULT LEVELS
SECOND SET OF LEVELS
PRE-ALARM
ALARM
PRE-ALARM
ALARM
R-32, R-454A, R-454C, R-454C, R-455A, R-1234YF
1000 ppm
1500 ppm
2000 ppm
4000 ppm
Audible alarm
Alarm relay
Pre-Alarm
Alarm
Sensor error
C
NC
NO
C
NC
NO
C
NC
NO
Connection to alarm station
Alarm station
15V
In
Gnd
Input x
GAS
Independent operation
12 - 30 Vdc
Without
delay
ON
1
2
ON
1
2
180 s
Alarm levels
By
default
ON
1
2
ON
1
2
2nd set
of levels
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.
Indicators
Wiring
Second alarm set is recommended for R-32 and R-1234YF
refrigerants.
