Installation; Warning; Test And Calibration - Tecno Control TS293KM User Manual

IST-2293.KM02.01/A
ing the device. If the condition does not change, it will be necessary to replace the unit and/or send it back to the
supplier to repair.
Yellow and Green LED activates (0mA output signal): this happens when the "Cartridge Sensor" is not working.
First try to perform the procedure of "ZERO" as described in the section "Test and Calibration > Zero adjust" then dis-
connect and connect the unit, finally try to replace a new "Cartridge Sensor". If the condition is not change, it will be
necessary to replace the unit and/or send it back to the supplier to repair.
All LED activate (>24mA output signal): this happens when the "Cartridge Sensor" is not working or gas concen-
tration is out of scale (higher than 25% LIE) If there are not any gas leaks and the condition is not change, it will be
necessary to replace the unit and/or send it back to the supplier to repair.

INSTALLATION

The 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.
Fig. 2
Mounting: The shows the instrument size. The unit must be positioned vertically with the sensor downwards.
Model TS293KG positioning: it should be fixed at 20-30 cm from the floor (the LPG gas is heavier than air).
Model TS293KM positioning: it should be fixed at 20-30 cm from the ceiling (the Methane gas is lighter than air).
Model TS293KI positioning: it should be fixed at 20-30 cm from the ceiling (the Hydrogen gas is lighter than air).
Model TS293KB positioning: it should be fixed at 30-40 cm cm from the floor (the Petrol gas is heavier than air).
Electrical Connection (see
table 1. Normally use a tree wire shielded cable.
in
The terminals (+ - S), are plug-in type, it is necessary to extract them to make the connection. Pay attention when
you insert them again, being polarized. With the Dip-Switches the Alarm Red Led activation is determined.
Note: Dip-Switch should be set with instrument powered off. Dip-Switch 1 settled ON activates ALARM Led indica-
(see Table 2).
tion
Important: Once installation is completed, it is necessary to adjust the sensor to the environment conditions, con-
nect the unit, wait about 20÷30 minutes and the carry out the "Zero Ad just" (see 'Test and Calibration >).
COMPATIBILITY WITH OTHER CENTRAL UNITS: In case of a central unit other then Tecnocontrol, please
verify the max load resistor as shown in

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".
Periodical testing: we advise to carry out working tests every 12 months. Operation Check, Zero Adjust, Calibration Check
and Calibration with Gas/Air mixture as explained on page 4 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.
Important: The catalytic sensor operates only in presence of Oxygen. Do not use pure gases or a lighter directly
on the sensor since they could damage it irremediably.
Warning: some substances cause a permanent reduction in sensitivity. Avoid contacts of the sensor with vapours
of Silicone compounds, Tetra-ethyl Lead (petrol antiknock additive) and Phosphate esters, since they can reduce
irremediably its sensitivity. Some substances produce a temporary loss of sensitivity. This "inhibitors" include Hy-
drogen sulphides, Chlorine, Chlorinated hydrocarbons and halogenated compounds. The sensitivity is recovered
after a short period of running in clear air.

TEST and CALIBRATION

PAY ATTENTION: This procedure has to be made with extreme attention and by authorized and trained people;
because starting this procedure it will increase mA Output causing the activation of connected alarm devices to the
gas Central Unit.
Operation Check, Zero Adjust, Calibration Check 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 Bottles (for Calibration Check and Calibration) please, only using a mixture 20%LEL
(0.88%v/v) Methane in Air (20.9% Oxygen). Catalytic sensors cannot work without Oxygen. It is possible to
use either the disposable one litre cylinders with adjust valve or the high pressure ones with reduction gear. Is also
necessary the Tecnocontrol Calibration Kit model TC011.
"INSTRUMENT OPERATION CHECK" (Check Code: F2, F2, F1, F1): this function allows to effect a functional test
of the equipment. After having put the system in safety and inserted the "Code Test", all Led are switched off. Then
they will switch on in sequence, the Led, from the yellow up to the red. At the end all the Leds will remain lighted for
around 5 seconds, then the instrument returns at the conditions of normal operation. It is advisable to perform this
operation every 6-12 months according to the use.
Note: this function is not working if the red Led is already turned on
"ZERO ADJUST" (Zero Code: F2, F1, F1, F2): this function is to adjust the Zero sensor and can be done in clean
air only (environment without the presence of gas or other pollutants). Immediately after having inserted the "Zero Code", as a
TECNOCONTROL S.r.l. Via Miglioli 47 SEGRATE ( MI )
Istruzione / User's Manual / Manuel d'utilisation
Fig.2): the maximum distance to install each detector from the Gas Central Unit is show
Fig. 4. We suggest using 24Vdc power supply.
Tel: 02/26 92 28 90 Fax: 02/21 33 734
Pag.5/10