safehome MTG-3000HR Gas Leakage Alarm User Manual
- June 4, 2024
- safehome
Table of Contents
GAS LEAKAGE ALARM
USER MANUAL MODEL: MTG-3000HR
Type A equipment
Thank you for choosing the MTG-3000HR flammable gas detector. CAUTION:
Before the first use, please read this user manual carefully, especially
information on how to use it, the place of installation, and the operation of
the device. The manual should be stored in a place that is easily accessible
to any other user.
Read carefully all notes preceded by this symbol.
The MTG-3000HR detector is designed to monitor rooms for the presence of
natural gas (LNG), methane, propane, butane, or propane-butane (LPG) mixtures
in living spaces. It is powered by a safe voltage of 12VDC via a 230V / 50Hz
power supply, which is included in the package. The detector is designed for
installation in areas without significant danger and is equipped with a
catalytic combustion sensor, which does not require further calibration,
designed to detect the presence of flammable gases around the sensor. Its
purpose is NOT to detect the presence of heat, smoke, fire, carbon monoxide
(CO), or other gases. The device was manufactured in accordance with the Czech
and European standard ČSN-EN 50194. A certificate confirming compliance with
the above-stated requirements was issued by an independent European research
laboratory TUV SUD Product Service GmbH.
FIELD OF APPLICATION
Living spaces with kitchens equipped with gas stoves, domestic boiler rooms
with appliances burning natural gas, propane-butane, or rooms in which gas
appliances are located, such as gas bottles, tanks, gas pipes, garages for
gas-powered cars, school chemical and physics workshops, and laboratories.
INSTALLATION IN CARAVANS, MOTORHOMES AND TRAILER COACHES, AND BOATS
When installing a flammable gas detector in caravans, motor homes, trailer
coaches, and boats, it is necessary to keep in mind that commonly used washing
and laundry detergents, polishes, and detergents based on paraffin and
gasoline fumes can affect the proper operation of the sensor.
For this reason, the detector must be installed as far away from these
materials or places where they may occur.
IMPORTANT INFORMATION – PHYSICAL PROPERTIES OF GASES: METHANE, NATURAL
GAS, LNG
Methane (natural gas) – is the main component of natural gas. Odorless,
colorless, flammable gas. It burns with a colorless flame. It forms explosive
mixtures together with air. It is twice as light as air. It accumulates at the
top of the room.
PROPANE, BUTANE, PROPANE-BUTANE, LPG
Propane (propane-butane mixture) – is a colorless, extremely flammable gas
with a characteristic odor. It forms explosive mixtures with air. It is
heavier than air. It accumulates near the surface in the lower parts of the
room.
PLACE OF INSTALLATION
This flammable gas detector is designed for wall installation indoors, where
air temperature does not fall below -10 ° C and does not exceed + 40 ° C at a
relative humidity of up to 95% RH. Location selection for the installation
depends on the type of gas that the sensor is intended to detect. It is
important that the warning signal is heard especially in bedrooms and other
rooms when the alarm is triggered.
ATTENTION!: The flammable gas detector must be installed by a competent
person.
Fig. 1 – HOW TO INSTALL THE DETECTOR INTO THE MOUNTING BRACKET
Fig. 2 – PLACE FOR INSTALLATION OF THE GAS DETECTOR
Fig. 2 – Selection of the mounting location of the detector depending on
the type of gas detected.
Fig. 3 – DESCRIPTION OF THE DETECTOR
Fig. 4 – RELAY WIRING DESCRIPTION
The change-over contacts of the relay are connected to the terminals as
follows:
- COM common contact
- NO switching contact
- NC circuit-opening contact
Fig. 4 – The relay output can be used for automatic blocking of gas supply, activation of security system, external signaling of danger, etc.
For gases lighter than air (natural gas, methane, LNG) , the detector
should be installed approximately 15-30 cm from the ceiling and a maximum of 6
m from the potential source of gas leakage (see fig. 1). The position for
installing the detector must be located at a higher height than the highest
point of an open window or door is located.
For gases heavier than air (propane, butane, and their mixtures, LPG) ,
the detector should be installed approximately 15-30 cm above the floor and a
maximum of 4 m from the potential source of gas leakage (see fig. 1). The
detector cannot be installed near the exit.
PLACES WHERE THE DETECTOR CAN NOT BE INSTALLED
- In places with strong airflow, near windows, doors, air conditioning, ventilation, ceiling fans, extractors, or other devices designed for air circulation or air exchange.
- In dusty areas or areas saturated with a greasy air. Such environments can adversely affect the correct function of the detector sensor.
- In places where the temperature may drop below -10 ° C or exceed +40 ° C.
- In places where the relative humidity may exceed 95% RH.
- Do not place the detector directly over a kitchen stove or kitchen sink.
- In outdoor spaces.
- In places where the curtains, draperies, furniture, or other obstructions could cover the suction grids of the detection chamber of the device and thus prevent air circulation towards the detector.
- Near equipment that generates a strong electric or magnetic field.
- Do not expose the detector to strong shakes, impacts, or direct contact with moisture.
The following substances may affect the reliability of the detector in the
short or long term or cause a false alarm:
Commonly used detergents for washing and laundering, polishes, paraffin-based
cleaning agents, diluents, solvents, paints, adhesives, gasoline fumes, and
some cleaning agents. The detector must be installed as far as possible from
these materials or places where they may occur.
INSTALLATION AND OPERATION
- Slide the mounting bracket on the back of the detector down to release it.
- After selecting the location for installation, make sure that under the surface, where you want to drill holes for the bracket, there is no electrical wiring or other networks.
- According to the spacing of the mounting holes on the bracket, mark 2 lines on the wall for drilling mounting holes and drill the holes. Install wall plugs into the drilled holes and screw the bracket to the wall with screws (included). Plug the power cord connector into the power input located at the bottom of the detector. Place the detector into the plastic mounting bracket.
- After installing the detector, make sure that the suction grids of the detection chamber and buzzer remain completely free and that there are no obstacles that could impede the circulation of air towards the detector.
- Plug the 12VDC power adapter into a 230V electrical outlet. Then the green “POWER” LED lights up, the red LED “ALARM” starts flashing for 5 seconds a buzzer siren sounds (the device initializes).
After 5 seconds, the detector automatically switches to operating mode and only the green “POWER” LED lights. This detector initialization will be repeated each time the detector power is turned off and on again.
Before selecting the area and installation location, please make sure that the induced gas is heavier or lighter than the air. see. ” PLACE FOR INSTALLATION OF THE FLAMMABLE GAS DETECTOR ” section.
LED DETECTOR SIGNALING
Green POWER LED
The green “POWER” LED is ON when the detector is under voltage and the device
is working properly.
Red ALARM LED
If the detector sensor detects an increased level of flammable gas, the device
triggers an audible alarm by means of an 85 dB buzzer accompanied by a
flashing red “ALARM” LED. In this case, follow the instructions in the section
“WHAT TO DO WHEN AN ALARM SOUNDS!”.
Yellow ERROR LED
The detector sensor has an automatic diagnostic function. If the detector
diagnostics detects any discrepancies, a buzzer will sound and the yellow LED
will flash.
Signaling of incorrect operation of the device may be caused by:
- non-compliance with operating conditions recommended by the manufacturer (in the range of temperature -10 ° C to +40 ° C and humidity up to 95% RH);
- the possible presence of other chemicals in the air, eg. Particles of alcohol, ammoniac, or aerosol.
To exclude that any of the above-stated situations will not cause an error
signal to be activated, move the device to another room. If the error
signaling stops, it means that the ambient operating conditions are the cause
of the activation of the signaling.
If the yellow LED is still flashing, it may mean:
- a very high concentration of gas that has contaminated and damaged the detector sensor;
- the end of the five-year service life of the detector sensor (the device has been used for more than five years).
In this case, the device should be replaced with a new one.
** The service life of the detector sensor is 5 years. Five (5) years after
installation and the first start, the detector should be replaced with a new
one.
TESTING THE GAS ALARM
Test the operability of the detector once a week. A gas cigarette lighter with
an extinguished flame can be used to check the sensor, which will release the
gas (but no longer than 2-3 s) to the lower edge of the suction grids of the
detection chamber at a distance of approximately 10 cm from the detector and
then wait for the activation of the detector (up to 15 s): the device triggers
an acoustic alarm signaling via 85 dB buzzer accompanied by flashing of the
red “ALARM” LED. The alarm automatically shuts off when the gas concentration
falls below the threshold activating the detector sensor.
SIGNALING OF GAS LEAK DETECTION
If the detector in the vicinity of the sensor detects a gas leak, it triggers
an alarm by means of an acoustic buzzer with a power of 85 dB, accompanied by
an optical flashing of the red ALARM LED. Depending on the signaling, the user
thus has the opportunity to take appropriate measures to prevent a dangerous
situation. The alarm signal automatically shuts off as soon as the
concentration of the gas drops below the threshold value activating the
detector sensor.
WHAT TO DO WHEN AN ALARM SOUNDS!**
Keep calm. In most cases, triggering a detector alarm is not associated with
an immediate danger to life, but the alarm cannot be underestimated!
If the detector triggers an alarm, follow the instructions below and perform
the following steps:
- open windows, and doors (make an air draught) and air the room;
- extinguish all sources of fire (smoldering cigarettes, candles, etc.) and do not use anything that could cause a gas explosion (switches, telephone, lighters, etc.);
- close the gas supply and switch off all gas appliances;
- inform all persons in the danger zone to leave the area and go outside the building;
- Do not use the phone in a building where a gas leak is suspected.
DO NOT FORGET! Do not switch on the lights or any other electrical
devices!
The explosion of a gas-air mixture can be caused by virtually any energy
source, such as a spark or a short circuit on electrical contact, a telephone,
an appliance, an impact, etc.
Leaking gas may also be sensed before an appropriate gas concentration
for an alarm is detected. In this case, the cause of the leak must be
eliminated immediately.
If the alarm signal persists and the cause of the leak is not clear or cannot
be eliminated, LEAVE THE ROOM IMMEDIATELY and immediately call the emergency
service or the emergency number 112.
If the alarm goes off and you find out the reason for the alarm (for example,
the gas stove is turned without a flame), the main valve can be opened again
after stopping the gas flow and verifying that all appliances are off.
Do not attempt to repair gas appliances yourself!
Installing a flammable gas detector is only the first step that increases
safety.
Others include:
- the correct choice of installation location;
- performing regular testing of the detector’s sensor operability;
- regular inspections, examinations, and maintenance of gas distribution systems, appliances, and equipment;
- acquaintance each household member with the alarm signaling of the detector and the steps that must be followed in the event of an alarm.
** Methane (the main component of natural gas) is an odorless gas. For this
reason, natural gas is odorized by other fragrances. These substances can be
sensed in the air even before the detector triggers an alarm, depending on the
calibration of the sensor and the preset minimum values for announcing an
alarm.
OPERATION AND MAINTENANCE**
To ensure a trouble-free operation of the device, observe the following
instructions:
- clean the suction grids once a month with a vacuum cleaner to remove accumulated dust;
- instruct children not to play with detectors;
- never use detergents or solvents to clean the detector;
- do not use paint, aerosols, air fresheners, hair sprays, deodorants, or any other sprays near the detector;
- Do not paint the device. The paint could block the suction grids of the detection chamber and thus negatively affect the correct function of the detector.
ATTENTION! There is a risk of electrical injury or failure if the device is tampered with. The detector is sealed. Except for an authorized service center, it is not permitted to disassemble or repair the detector. Opening the device automatically leads to a loss of warranty. Due to the loudness of the detector, we recommend that you should cover up the buzzer hole with your fingers while testing the device.
WARRANTY
The manufacturer warrants to the original purchaser that the enclosed
flammable gas detector will, during normal use, operation, and maintenance, be
free from any defects in material, workmanship, or construction, for a period
of three (3) years from the date of purchase, which is used and maintained in
accordance with the product designation and in accordance with the
instructions given in this user manual. The manufacturer’s obligation under
this warranty is limited to repair or replacement of the detector, or some
parts thereof, which it finds defective in material or design, free of charge
after sending the detector together with proof of date of purchase to the
place of purchase, or to the address of warranty service: SAFE HOME Europe
s.r.o., Havlíčkova 1113 / 47,750 02 Přerov, Czech Republic. Attach a brief
description of the defect, including contact information, telephone number,
and return addresses. Information on the current address of the service center
can be obtained on the customer line: (+420) 581 222 262. The address is also
available on the website www.safe-home.eu.
This warranty does not apply to the detector if the product has been damaged,
modified, misused, adjusted, or damaged as a result of insufficient or
incorrect maintenance or inadequate A.C. or D.C. power supply or has been
damaged by lightning. The liability of the company arising from the sale of
this detector must in no case exceed the cost of replacing the detector and in
no case will the company be liable for consequential loss or damage caused by
the detector failure.
Manufacturer’s responsibility GARVAN ENTERPRISES LTD. resulting from the sale
of this detector or under the terms of this warranty shall in no case exceed
the cost of replacing the detector, and in no case shall the manufacturer be
liable for consequential loss or damage resulting from the failure of the
detector or for breach of this or any other warranty, express or implied, even
if the loss or damage is caused by negligence or fault on the part of the
company. The manufacturer is not liable for injuries, damage to property,
loss, or other special, accidental, or consequential damages caused by a gas
leak, fire, or explosion. Your flammable gas detector does not replace
property, accident, life, or other insurance. Consult your insurance agent.
This warranty does not affect your statutory rights.
ENVIRONMENTAL PROTECTION
This symbol indicates that the product must not be disposed of as normal
municipal waste at the end of its working life. To prevent possible negative
impacts on the environment or human health from uncontrolled disposal,
separate the product from other types of waste and recycle it responsibly for
sustainable use of secondary raw materials. For more information about how to
dispose of your equipment, please contact your disposal of household waste or
your supplier. Learn more about how these products can be disposed of for safe
ecological recycling, you can get them from your seller or ask the relevant
municipal authority.
TECHNICAL SPECIFICATIONS
Detected gases| natural gas (LNG), methane, propane, butane, propane-butane
mixtures (LPG)
---|---
Sensor type| catalytic – sensor with hot wire
Alarm thresholds| 12 % DMV (lower explosive limit of the gas)
Propane| 0,20 %
Butane| 0,17 %
Methane| 0,53 %
Alarm signaling| optical – red alarm LED flashes “ALARM”
acoustic – siren – 85dB at a distance of up to 3 m
Regular operation| green “POWER” LED is ON
Error signaling| yellow LED flashes and the buzzer sounds
Relay output| max 1A / 120V AC; 2A / 4V DC
Maximum consumption| 1W in standby mode; 1.5W in alarm mode
Operating mode| continuous
Operating temperature| from -10°C to +40°C
Storage temperature| from -20°C to +60°C
Working relative humidity| max. 95 % RV
Power supply| DC 12V +/- 5 %
Mains supply| AC 230V/50Hz, 9W DC12V 300mA (included)
Cover| IP 20
Service life| min. 5 years
External dimensions / weight| 75 x 75 x 35 mm / 66 g
Cover material| ABS plastic
Certificates and approvals| ČSN-EN50194-1:2009, ČSN-EN50194-2:2006
Manufacturer: Garvan Enterprises Ltd.,
Rm 16-17, 21 / F.,
Wing Hing Ind. Bldg.,
83-93, Chai Wan
Kok Street, Tsuen Wan,
N.T., Hong Kong.
Distributor:
SAFE HOME Europe s.r.o.,
Havlíčkova 1113/47,750 02 Přerov,
www.safe-home.eu
Regular Production Surveillance Safety Type Approved
www.tuv.com
ID 1419060901
BS-EN501 94
http://m.certipedia.com/?id=1419060901&locale=en