TECHNICAL CHARACTERISTICS
- Power supply:
230Vac-50/60Hz
- Power dissipation:
20mA max
- Operation temperature:
-10°C…. +40°C
- Humidity:
30%…. 90%
- Alarm intervention calibrated to detect gas up to 10% of the
L.E.L.(Low Explosion Limit).
- Time delay at switching on:
about 1 minute
- Alarm and relay time delay:
about 20 seconds
- Acoustic signalisation:
85 dB (A) in 1 meter
- Electrical self-diagnosis signal for eventual abnormalities
- Rated to:
IP42
TO COMPILE BY THE INSTALLER
Installation date ____________________________
Substitution date ___________________________
Installation local ____________________________
Instruments’ serial number ____________________
(to read on the internal part of the plastic involucres)
Stamp
Sign ___________________________
WARNING
For the cleaning, use an cloth on the top. Not be opened, it could
cause damage.
Note that the sensor employed has a good resistance towards
products such as sprays, detergents, alcohol, glues and paints.
However, these products could contain substances which, if in
great quantity, could interfere with the sensor and cause false
alarms. We recommend to ventilate the room should products
like these be used. Note that the detector is not able to detect gas
leaks occurring outside the room where it is installed, neither
inside walls nor under the floor. To make gas (methane and LPG)
nose identifiable, gas is added with a particularly disturbing
smelling substance. Small gas quantities coming out from left
open cookers for some minutes do not cause the gas detector
alarm signalling even if it is clearly nose perceptible; in fact the
quantity of gas presents in the environment can be under the
alarm threshold. Please remember that the gas detector cannot
work without power supply.
WARNING!! In case of alarm:
1) Extinguish all naked flames
2) Turn off the gas supply at the gas emergency control and/
or, with a LPG supply, the storage tank
3) Do not switch on or off any electrical lights. Do not activate
any electrically powered devices
4) Open both doors and windows to increase room ventilation
If the alarm stops, it is necessary to identify the alarm reason
and act accordingly
If the alarm condition continues and the cause of the leak is
not apparent and/or cannot be corrected, vacate the premises
and immediately notify the gas emergency service.
ELECTRIC CONNECTION
The gas detector has inside a jumper that permits to select the
type of electro-valve to connect that can be Normally Opened type
(Fig. 3) or Normally Closed type (Fig. 4)
We remind that the valve should be installed on the gas pipes
outside the room under control, since protection is useless if a
gas leak occurs at the beginning of the gas pipe.
JUMPER IN POSITION “NORMALLY OPEN”
Fig.3
Fig.4
Normally closed
manual resetting valve
dis.0134144a cod.
2.710.2198
Made in Italy
992
992
PERIODICAL TESTING
We recommend to contact the installer at least once a year for a
general verification.
IMPORTANT: Do not use pure gas, such as a lighter, directly on
the sensor since the sensor could be irremediably damaged.
Positioning N.O.: proper for normally opened
valves (Fig.3).
JUMPER in this position in case of alarm the
relays commute and the terminals 4-5 and 7-8
switch off for 1 second every minute (Fig.3).
JUMPER IN POSITION “NORMALLY CLOSE”
Positioning N.C.: proper for normally closed
valves or for the contemporaneously check of
both electro-valve and an external electrical
charge (Fig.4).
JUMPER in this position in case of alarm the
relays commute and the terminals 4-5 and 7-8
switch off till the alarm will be stopped.
OUTPUT CONTACTS
If one of two relays is not used the contacts must be free.
Normally opened
manual resetting valve
230V/50Hz
NO
COM
NC
1 2
GAMMA 653
NO
COM
NC
3 4 5 6 7 8
UTILIZZATORE
230V/50Hz
NO
COM
NC
1 2
GAMMA 653
NO
COM
NC
3 4 5 6 7 8
UTILIZZATORE
DEVICES
DEVICES
230Vac-50/60Hz
230Vac-50/60Hz
POSITION OF JUMPER
The manufacturer firm reserves the right to make any aesthetic or
functional modification to the without prior notice at any time.
OPERATIONAL CHECK
After the installation it is possible to check the correct operational
of the instrument by pushing for at least 2 seconds the TEST
button on the board, in this way all the leds will be alight, the
acoustic alarm and both relays will be on for 5 second.
At this point it will be necessary to rearm the electro valve connected.
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Tecnocontrol Srl
via Miglioli, n°47
20090 Segrate (MI) Italy
Tel. +39 02 26922890
www.tecnocontrol.it
GECA Srl
via E.Fermi, n°98
25064 Gussago (BS) Italy
Tel. +39 030 3730218
www.gecasrl.it
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