AKO-57624 Refrigerant Gas Detector Installation Guide
- October 30, 2023
- AKO
Table of Contents
5762H402 Ed.04
Instructions AKO-57624
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
Installation
Technical specifications
Power supply ……………………………………………………………………………….12-30 Vdc
Consumption………………………………………………………………………………. Typical: 75 mA, Maximum:150 mA
Alarm relay …………………………………………………………………………………SPDT 30 Vdc, 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).
Alarm delay
Alarm 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.
| DEFAULT LEVELS | SECOND SET OF LEVELS |
|---|---|
| PRE-ALARM | ALARM |
| 1000 ppm | 1500 ppm |
Second alarm set is recommended for R-32 and R-1234YF refrigerants.
Wiring
Connection to alarm station
Independent operation
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
Flashing| Alarm / Pre-Alarm saved| Standard operation, acoustic
alarm disabled| MAINTENANCE mode
activated
Flash| Detector error| Detector in initialisation
process| SET HOLD mode activated
*Flashing: 0.5 s ON / 0.5 s ON / Flash: 0.1 s ON / 0.8 s OFF
Audible alarm
| Pre-Alarm | Alarm | Sensor error |
|---|---|---|
| Intermittent sound | Bi-tonal sound | 3 tones every 2 minutes |
Alarm relay
| Pre-Alarm | Alarm | Sensor error |
|---|---|---|
Configuration
In this mode the acoustic alarm can be activated / deactivated or the detector
can be returned to factory settings.
To activate it:
- 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.
- Press the Mute push-button to enable / disable the acoustic alarm.
- 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.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>