aquilar AquiTron AT-SRG Installation instructions

AquiTron AT-SRG
Sensor for
Refrigerant Gas
INSTALLATION
& OPERATION
INSTRUCTIONS

Please read these instructions carefully and keep them in a safe place (preferably close to the
module) for future reference. These instructions must be followed carefully to ensure proper
operation.
AT-SRG
Sensor for Refrigerant Gas -
Occupied Spaces
A. GENERAL INFORMATION
The AquiTron Sensor for Refrigerant Gas (AT-SRG) detects refrigerant leaks in occupied spaces.
The sensor is for indoor applications only. It is housed in an ABS enclosure that fits into most standard single gang UK electrical back boxes
(not included).
Refrigerant gas leak alarms and sensor status are indicated visually by a 2-colored LED and audibly by a buzzer. In case of an alarm and/or
fault, a volt free relay is available for remote output (for example, shut-off valves, remote alarm devices or central monitoring/BMS).
1. The AT-SRG refrigerant sensor requires no calibration during its life cycle.
2. Proper installation and Annual bump testing for correct function is strongly recommended as required for BS EN378 compliance.
LEAK DETECTION SOLUTIONS
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk 1
AT-SRG POWER
AT-SRG-12/24V 12/24Vac/dc*
AT-SRG-230V 100 to 240 Vac, 50-60 Hz
*±10% maximum
POWER CONSUMPTION
Maximum wattage : 0.7 Watts
RELAYS
Number: One LEAK and FAULT relay
Type: SPDT
Rating: 3 A at 250Vac/30Vdc
PANEL OUTPUT
Dedicated output compatible with all Eco-Leak panels.
SIZE
To fit within a UK single back socket box, 35 or 44mm
deep.
B. PRODUCT INFORMATION
AUDIBLE ALARM
80Db @ 1 Meter
DETECTABLE GASES
R410A, R32, R290 (dependant on interchangeable
sensor head installed - refer to sensor head label)
Note: Each sensor is suitable for one gas.
SENSOR LIFE
Expected 15 years, depending on sensor’s
environmental conditions
ALARM DELAY
0 or 5 minutes, Dip Switch Selectable
APPROVALS
BS EN IEC 61000-6-3:2021
BS EN IEC 61000-6-1:2019

AT-SRG
Sensor for
Refrigerant Gas
LEAK DETECTION SOLUTIONS
2
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
B. APPLICATION
ENVIRONMENTAL CONSIDERATIONS: Carefully consider the full range of environmental conditions which the sensor will be
exposed to.
TARGET GAS CONSIDERATIONS: The physical data of the gas to be detected must be observed.
APPLICATION CONSIDERATIONS: The appropriate location should be carefully selected. For example, possible leak location, air
movement/drafts, etc. should be considered.
ACCESSIBILITY CONSIDERATIONS: Accessibility is required for maintenance purposes.
ELECTRONIC CONSIDERATIONS: The system contains sensitive electronic components that can be damaged. Do not touch or
disturb any of these components.
COMPLIANCE: Ensure the sensor is positioned to meet the required regulations and standards to suit project requirements.
The AT-SRG should be mounted in a position considering the above criteria. The location should be appropriate for the gas being detected
and the protection required.
This would generally be in open air away from heat sources and drafts (radiators, windows/doors etc.) at low level (approx. 100-150mm
above FFL) within the occupied space being protected (e.g. not ceiling voids or wardrobes). See diagram for example of suitable location.
Places to avoid installing the AT-SRG Sensor
Places to consider when installing the AT-SRG Sensor

LEAK DETECTION SOLUTIONS
3
C. INSTALLATION
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
This sensor and associated equipment must be installed in accordance with all local and national laws, rules, wiring codes, and
regulations.
Failure to install and operate the unit in accordance with these instructions and with industry guidelines may cause serious injury
including death. This unit must be installed by a suitably qualified technician who will install this unit in accordance with these
instructions and the relevant standards. Operators of the unit should be aware of the regulations and standards in their country for the
operation of this unit. These notes are only intended as a guide and Aquilar bears no responsibility for the installation or operation of this
unit.
This unit should be installed within a standard UK single gang back box (not supplied) Minimum depth 35mm . This can be ush or surface
mount. (Recommended 44mm back box)
If fitting the AT-SRG into an existing double gang socket box the double gang adapor plate should be used to ensure correct operation of
the sensor.
Proper earthing must be observed. If using metal socket boxes or metal faceplate proper earth bonding must be observed according to
local electrical regulations.
Ensure all wiring connections are complete prior to applying power to this unit.
D. COMPONENTS OVERVIEW
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
1
2
3
1. Power In 100 - 230Vac or 12/24Vac/dc
(dependent on model)
2. Ecoleak Panel Connection
3. Relay Connection (Volt Free)
4. Serial Number
1. Replacement Sensor Head
2. Dipswitch (for configuring the AT-SRG-XX)
3. Buzzer
4. Bi-Colour LED
5. Reset / Mute Button
6. Direction (Top) arrows x2 for proper mounting
7. Mounting screw holes.
8. Gas Type / Low and High Level set points
1
2
3
4
5
6
7
AT-SRG
Sensor for
Refrigerant Gas
4
8
79.5mm
79.5mm
60.3mm13.75mm
13.75mm
4mm

LEAK DETECTION SOLUTIONS
4
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
AT-SRG-12/24
Important. Polarity free connection.
Very Important: If the volt free
relay is controlling 230Vac, the
earth terminal shown here must be
connected to the incoming earth for
correctn earth protection. Metallic
Back box and metallic faceplates
must also be earthed.
Power should be supplied from a local source that will allow the sensor to be easily isolated if required.
Fuse protection should not exceed 3Amp.
When using a metal faceplate with the AT-SRG, dual ferrules can be used to earth the faceplate in accordance with the IET regulations.
D. POWER CONNECTION
Important. This unit must be earthed. If the protective earth conductor terminal is also used for other bonding purposes, the
protective conductor shall be applied first and secured independently of other connections. The protective conductor shall be
connected in such a way that it is unlikely to be removed during servicing that does not require disconnection of the protective conductor.
Important. All electrical connections must be made by a suitably qualified technician in accordance with current electrical
regulations.
Important. All connections should be made before applying power.
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
AT-SRG-230
Important. Fuse protection not
to exceed 3 Amp, cable not to
exceed 1.5mm2
AT-SRG
Sensor for
Refrigerant Gas

LEAK DETECTION SOLUTIONS
5
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
The AT-SRG has an on-board volt free relay to allow it to be used to control local equipment such as pump down system valves or remote
beacons etc.
The relay is SPDT so can be used in normally open or normally closed configurations.
Important. All electrical connections must be made by a suitably qualified technician in accordance with current electrical
regulations.
E. RELAY CONNECTION
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
Important. The relay on the AT-SRG is volt free. No power output is available from it.
Relay rated at Max 3 A at 250Vac/30Vdc
Normally Closed
Normally Open
Common
Note: The relay operation can be setup
in failsafe by configuring the dipswitch
no 5 (see section F).
F. CONNECTIVITY
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
AQUINET FIELD BUS MONITORING SYSTEM CONNECTION
The AN-ZCM brown and black wires should be connected to the C and N/C AT-SRG relay outputs.
Dipswitch 5 should be enabled on the AT-SRG.
D+ D-
AT-ZCM AT-ZCM Dip switch 5 ON
234561
AT-SRG Setting
AT-SRG
Sensor for
Refrigerant Gas
Brown
Black
On
Off

LEAK DETECTION SOLUTIONS
6
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
AT-SRG
Sensor for
Refrigerant Gas
BMS / REMOTE PANEL / ANCILLARY EQUIPMENT CONNECTION
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
Dip switch 5 ON
234561
AT-SRG Setting
BMS
AT-RAP
Remote Alarm
Panel
The AT-RAP should be connected across the C and N/C AT-SRG relay outputs.
Dipswitch 5 should be enabled on the AT-SRG.
Important note: The AT-RAP and possible Ancillary equipment used requires a local power supply.
ANCILLARY
EQUIPMENT
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
ECOLEAK CENTRAL/REMOTE MONITORING PANEL CONNECTION
ECO-1
ECO-6
ECO-24
The AT-SRG sensor can be directly connected to a zone input on an Eco-Leak alarm panel for central/remote monitoring.
On
Off

LEAK DETECTION SOLUTIONS
7
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
F. OPERATION
DIPSWITCH CONFIGURATION
Important: Configuration should be carried out prior to applying power to the sensor.
If a dipswitch setting is altered the sensor should be reset (see page 9) to ensure the new setting is correctly identified and applied by the
sensor.
AT-SRG Dipswitch
234561
1. Sounder Mute
2. Relay Activiation
3. Alarm Delay
4. Alarm Latch
5. Relay Failsafe
6. Extend Mute
On
Off
Dipswitch switch controls:
1 - Sounder Mute
234561
Off - Sounder enabled (Default)
On - Sounder Mute active (Sounder disabled)
On
Off
2 - Relay Activiation
3 - Alarm Delay
4 - Alarm Latch
5 - Relay Fail-safe
234561
234561
234561
234561
Off - Relay operates for both high- and low-level alarms (Default)
On - Relay only operates on high level alarm
Off - Alarm functions are active immediately (Default)
On - Alarm functions (LED, Sounder and relay outputs) are delayed for 5 minutes.
Off - Alarm functions reset if gas is no longer detected (Default)
On - Alarm functions stay active until manually reset (Sensor reset button operated)
Off - Relay operates when sensor in alarm outputs are standard as indicated on sensor board.
On - Relay is ‘energised’ when AT-SRG is powered. It will still operate when sensor in alarm.
However outputs are reversed while power is applied and will de-energise to indicate power
loss to sensor
On
On
On
On
Off
Off
Off
Off
AT-SRG
Sensor for
Refrigerant Gas
All 6 switches are shown in the
OFF position above
6 - Extend Mute
234561
Off - A muted alarm will re-alarm after 30 minutes if gas is still present in the room (Default)
On - A muted alarm re-alarms after 60 minutes if gas is still present in the room.
On
Off

LEAK DETECTION SOLUTIONS
8
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
AT-SRG
Sensor for
Refrigerant Gas
LED OPERATION
The sensor has a bi-colour LED to indicate status.
Sensor Operation LED Indicator
Startup Mode 1 sec Slow ashing green LED - 1Hz
Standby Solid green LED
Leak Alarm - Low Threshold Level 2 sec Red (Slow Flashing) - 0.5 Hz
Leak Alarm - High Threshold Level 0.5 sec Red (Fast Flashing) - 2Hz
Fault Alarm 1 sec Red / Green (Fast Flashing) - 1 Hz
No Power to Sensor LED Off
SOUNDER OPERATION
Sensor Operation Sounder Operation
Startup Mode Single Beep
Leak Alarm - Low Threshold Level 1 sec Twin tone, rising, repeated at 1Hz
Leak Alarm - High Threshold Level 1 sec Alternating high / low tone 1Hz
Fault Alarm 2 sec Single tone repeated 0.5Hz

LEAK DETECTION SOLUTIONS
9
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
Mute / Reset Sensor
AT-SRG
Sensor for
Refrigerant Gas
Mute / Reset Notch
The sensor can be muted or reset by pressing the mute / reset switch. The notch showing on the faceplate align to the Mute / Reset swtch
at the back of the faceplate. Use an item like a paper clip to mute or reset the AT-SRG.
The AT-SRG sensor can be reset by holding down the mute button for 10 seconds. This will force the sensor to go back through its start up
procedure.
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac
Mute / Reset Switch
SETUP
Once all connections and configurations are complete the unit can be physically installed in its back box ensuring no cables are trapped
or damaged. Power can now be applied.
Each time power is applied the AT-SRG will enter ‘start up mode’. During this time the sensor will perform automatic zeroing and
calibration functions.
Important. For correct operation it is vital the AT-SRG unit is powered and commissioned in the environment it will be operating
within.
Start up mode will complete after 1-2 minutes.
When the LED turns solid green the sensor is ready for use and monitoring for refrigerant gas.
Contact your sensor supplier or Aquilar if the unit goes into fault alarm at this point.
The AT-SRG sensor can be reset by holding down the mute button for 10 seconds. This will force the sensor to go back through its start
up procedure.

LEAK DETECTION SOLUTIONS
10
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
G. COMMISSIONING
AT-SRG
Sensor for
Refrigerant Gas
It is important to perform a ‘bump test’ to ensure correct operation of the alarm system.
Important. Do not use 100% refrigerant or any other 100% gas to attempt to test the sensor. Doing so will invalidate any warranty.
Only bump test gas in the target configuration must be used and delivered using the 0.3L/min test gas regulator (available from Aquilar).
Bump test gas percentages and PPM/LEL percetnages levels differ for each target gas.
To prevent unwanted escape of sample refrigerant gas the AT-SRG-TA test adaptor hood and hose kit should be used to perform bump
tests.
Once sucient gas has been introduced to the sensor it will go into alarm.
LED and sounder operation should be confirmed.
Relay operation and Eco panel output (if used) should be confirmed.
In default mode the AT-SRG will self-reset as the test gas dissipates unless alarm latching (dipswitch 4) is enabled. If alarm latching
function is enabled, then the reset button must be pushed to mute and reset the sensor.
Important. The test gas ow regulator should be shut off between bump tests.
BUMP TEST
The above bump tests should be carried out as part of planned maintenance. We would recommend annually as a minimum.
Periodic system testing can be performed without test gas by using the AT-SRG-AE alarm emulator kit.
Important. Emulator testing should not replace annual bump testing as does not test the sensor head.
MAINTENANCE
THE AT-SRG-AE ALARM EMULATOR
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561 234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
The AT-SRG-AE consists of two elements, the alarm emulator and the sensor head extractor tool, shown below:
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561 234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
Alarm Emulator
Sensor head extractor tool

LEAK DETECTION SOLUTIONS
11
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
AT-SRG
Sensor for
Refrigerant Gas
Then the AT-SRG sensor head should be removed from the sensor body using the provided using the removal tool in the AT-SRG-AE kit.
The sensor should be first turned off. Faceplate must then be removed.
USING THE AT-SRG-AE ALARM EMULATOR
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561
234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
The emulator can then be fitted.
Once power is returned to the sensor , the Emulator’s Led will indicate the emulator is ready for use. The main sensor LED should also be
solid green before starting using the emulator tool.
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561 234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561
234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561 234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561 234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator

LEAK DETECTION SOLUTIONS
12
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
AT-SRG
Sensor for
Refrigerant Gas
Push the button to scroll through the alarm emulation options available.
USING THE AT-SRG-AE ALARM EMULATOR CONT.
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561 234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
Once the tests have been carried out the unit should be powered down so the emulator can be removed using the sensor head extractor
tool, and the sensor head re-fitted.
Once power is restored the sensor will go through the start up process. Refer to section H for LED Operationd durting startup procedure.
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561 234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561 234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
Emulator will produce a low
level alarm on the sensor.
Emulator will produce a high
level alarm on the sensor.
Emulator will produce a fault
alarm on the sensor.
Fault High
Low
AT-SRG
Alarm
Emulator
Fault High
Low
Fault High
Low
Fault High
Low
Fault High
Low
234561
234561
Fault High
Low
234561
Fault High
Low
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
AT-SRG
Alarm
Emulator
234561
NC
NO
COM
Ecoleak
Panel
NC
NO
COM
Ecoleak
Panel
12-24V
AC/DC
L E N
Mains In 100-230Vac

LEAK DETECTION SOLUTIONS
13
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
H. TROUBLE SHOOTING
Problem:
Sensor does not go into alarm when test gas applied
Possible Cause:
AT-SRG has no power.
Action:
• Check power connections are correctly made.
• Check power is present at the sensor with a multi-meter.
• Check supply voltage matches AT-SRG model used.
Possible Cause:
Unit is still in start up mode.
Action:
Reset unit, wait until the LED goes solid green then retest
Possible Cause:
Incorrect sample gas being used.
Action:
Check correct refrigerant gas type is being used.
Possible Cause:
Alarm delay has been enabled
Action:
Turn off dipswitch 3 and reset unit
AT-SRG
Sensor for
Refrigerant Gas
Problem:
Alarm LED ashes but there is no audible warning
Possible Cause:
Mute is enabled
Action:
Check dipswitch 1 is not enabled
Problem:
Sensor does not begin start procedure when power is applied
Possible Cause:
Not powered correctly
Action:
• Check power connections are correctly made.
• Check power is present at the sensor with a multi-
meter.
• Check supply voltage matches AT-SRG model used.
Possible Cause:
Has the unit been setup in the environment it
is being used in?
Action:
Reset unit to go back into start up mode.
Possible Cause:
Test gas is not in date?
Action:
Check date on the gas cylinder that statyes
whther the gas is still in date.
Possible Cause:
Test gas cylinder empty?
Action:
Check regulator guage for gas level.
Possible Cause:
Test gas not applied to the required duration.
Action:
When bump testing leave gas at least up to a
minute (until unit alarms).
1
2
3
4
5
6
7
8
Possible Cause:
Sensor is faulty
Action:
Obtain RMA number and return to Aquilar for
repair/replacement.
1
1 2

LEAK DETECTION SOLUTIONS
14
V1.1 12.2023
Unit 30, Lawson Hunt Industrial Park,
Broadbridge Heath, Horsham, West Sussex,
RH12 3JR
[phone]
[email protected]
www.aquilar.co.uk
Important: All information, including illustrations, is believed to be reliable. Users, however, should independently evaluate the suitability
of each product for their application. Aquilar Limited makes no warranty as to the accuracy or completeness of the information, and
disclaims any liability regarding its use. The only obligations of Aquilar Limited are those in the Aquilar Standard Terms and Conditions of
Sale for this product, and in no case will Aquilar Limited be liable for any incidental, indirect, or consequential damages arising from the
sale, resale, use or misuse of the product. Specifications are subject to change without notice. In addition, Aquilar Limited reserves the
right to make changes – without notification to Buyer
– to processing or materials that do not affect compliance with any applicable specification.
AquiTron is a trademark of AquiTron Limited
Aquilar is a trademark of Aquilar Limited
AT-SRG
Sensor for
Refrigerant Gas
VOLT FREE RELAY OPERATION
All leak detection alarm panels supplied by Aquilar are provided with, at least one, volt free relay.These are also known as volt free
contacts or dry contacts. They are used to operate auxiliary equipment such as – valves, sounders, pumps, beacons etc., sending closed or
open contact signals to Building Management Systems (BMS) or other logic level controls.
As the name suggests, there is no voltage present at the terminals. So, to operate a valve, for example, you need to have a dedicated
power supply which is then fed through the relay (typically the live feed) to switch it on or off accordingly.Typical wiring is as follows:
Please ensure that the load does not exceed the ratings of the volt free relay. This is stated in the relevant product’s data sheet /
installation instructions.
Wiring of volt free relays should be undertaken by a suitably qualified technician and in accordance with the regulations and standards in
their industry/country. These notes are only intended as a guide and Aquilar Ltd bears no responsibility for the installation or operation of
the unit.