IST-293.IM01.01/B
Istruzione / User’s Manual / Manuel d’utilisation
Pag.6/12
TECNOCONTROL S.r.l. - Via Miglioli 47 SEGRATE ( MI )ITALY
Tel. +39 02 26922890 - Fax +39 02 2133734
INSTALLATION
The gas detector must be accurately installed and testing according to the national dispositions in force on
the safety of the plants and installation of electric devices in areas with danger of explosion.
Mounting
: The
Fig. 2
shows the instrument size. The unit must be positioned vertically with the sensor downwards.
Avoid obstacles that block the view of the detector or the diffusion of air around the sensor. Consider that the air
movements can affect the detection of gas. Avoid mounting in corners, near doors or windows or in the direct flow
of air intakes or ventilation systems. Normally, the detector should be installed indoors, but if it was outside, should
be protected from direct sun and rain, and should be avoided fast heat drops.
Models TS293IM
should be fixed at 20-30 cm from the ceiling (Methane is lighter than air).
Model TS293IG
should be fixed at 20-30 cm from the floor (LPG gas is heavier than air).
Models TS293IB
should be fixed at 20-30 cm from the floor (Petrol vapours are heavier than air).
Model TS293IX
should be fixed in high position with a gas Vapour Density less than 1 (
the gas is lighter than air
) or in
bottom position with a density greater than 1, (
the gas is heavier than air
) (
see Table 3 - column n.7
).
Electrical Connection
(
see Fig.2
)
: the maximum distance to install each detector from the Gas Control Unit is show
in
table 1
. Normally use a tree wire shielded cable.
The opening of the enclosure and the connections must be affected with detector not powered.
To open the detector, remove the two Allen screws, and then remove the cover carefully.
The terminals (
+ - S
), are polarized plug-in type, it is necessary to extract them to make the connection.
NOTE: Dip-Switch should be set with instrument powered off. You can inhibit the operation of the Red LED
(ALARM)
(
See Table 2
).
Important
:
Once installation is completed, close the housing,
power up the unit. It is not necessary perform any ad-
justment, wait about 20 to 30 minutes and then, if it is required, carry out the "
Operation Check
"
(
see ‘
Test and Calibra-
tion
).
COMPATIBILITY WITH OTHER CENTRAL UNITS: In case of a central unit other than Tecnocontrol
, please
verify the max load resistor as shown in
Fig. 4
. We suggest using 24Vdc power supply.
We accept no liability for any malfunction, failure or damage caused by products that are not compatible or
not of our production.
WARNING
Average life
: The sensitive element used in this detector has an excellent stability in time. In fresh air and in nor-
mal working condition the sensor's life is about 5 years from the date of installation. After this period the yellow LED
“
FAULT
” flashes every 4 seconds, is necessary replacing the “
Cartridge Sensor
”.
After an exposure above the limits of measurement (100%LEL), the functioning of the detector must be checked
with the titled gas as indicated in paragraph "
CALIBRATION CHECK
".
Periodical testing
: we recommend performing tests, at least annually or more frequently (3-6 months) depending
on environmental conditions and safety requirements. Tests:
OPERATION CHECK, ZERO ADJUST
and with Gas/Air
mixture, the
CALIBRATION CHECK
and if necessary the
CALIBRATION
as explained in chapter “
Tests and Calibration
”.
Note:
the detector is not able to detect gas leaks occurring outside the room where it is installed, neither inside
walls nor under the floor.
Warning:
Consider that in polluted environments, with the continued presence of vapours of flammable gases or
over the standard temperature and pressure, the useful life of the sensor can be reduced.
TEST and CALIBRATION
PAY ATTENTION
:
This following procedure has to be made by competent and trained personnel because,
are activated control unit outputs (relays), causing the intervention of the connected alarm devices.
Operation Check, Zero Adjust and Calibration
:
are different code protected functions. To access these functions
is necessary to insert the relevant “
Code
" through the keys F1 and F2. To have the key pressure recognized, hold
pressing it for around a second (
until the Green LED doesn't switch off for a moment
). Then the next key can be pressed. In
case of error all it takes is waiting around 10 seconds and the sequence is automatically erased.
Calibration Kit, Sample Gas Cylinders
(
for Calibration Check and Calibration
) please, only uses a mixture:
MODEL
Sample Gas Cylinder for Calibration
Tecnocontrol Code
TS293IM
-Methane
TS293IX
-Methanol
2.2% Volume
(= 50% LEL)
Methane
(CH
4
)
in air
Available on request
TS293IG
-
LPG
TS293IB
-Petrol
TS293IX
-Heptane
0.7% Volume
(= 50% LEL)
Butane
(C
4
H
10
)
in air
Available on request
You can use
disposable cylinder, complete with adjust valve
. Is also necessary to use
the calibration kit
Tecnocontrol model TC011
(
for non-corrosive gases only
) or
TC014
(
Stainless steel for corrosive gases
).
“INSTRUMENT OPERATION CHECK” (
Check Code
: F2, F2, F1, F1)
:
this function allows to effect a functional test
of the equipment. After having inserted the "
Check Code
", all LED are switched off. Then LED will switch on in se-
quence, from the yellow up to the red. At the end all the LED will remain lighted for around 5 seconds, and then the
detector returns at the conditions of normal operation. It is advisable to perform this operation every 12 months ac-
cording to the use.
Note
: this function is not working if the red LED is already switched on.
