Geca SE235KM Quick Start Manual

GAS DETECTOR WITH RELAY
SE235KM / SE235KG
Mod.
SE235KM
SE235KG
GENERAL DESCRIPTION
The detectors SE235KM and SE235KG are gas detector of methane
and LPG gas, that warns with an optical and acoustic signal, the pre-
sence of gas in the environment.
They are planed to be functioning as detected gas with relay exit.
The detectors are calibrated to detect gas up to 10% of the L.E.L. (Low
Explosion Limit), this threshold can change in base of the environmen-
tal conditions but it will not gets over during the first 4 years working, the
15% LEL, after that period the instrument have to be put out of order or
re-send to manufacturer firm for a complete substitution of the device.
With that aim, the package is provided with a printed label on which
have to be indicated the maturity of correct working period (4 years from
installing date); this printed label have to be compiled by who makes
the installation.
LUMINOUS AND ACOUSTIC SIGNALISATIONS
These gas detectors are provided, on the front panel, by three luminous
signalisations:
-GREEN LED (ON): indicates that the instruments is powered.
-YELLOW LED (FAULT): Indicates that the gas sensor is damaged.
-RED LED (ALARM): Indicates that the gas concentration
measured in the air exceeds the alarm threshold.
In case of damage, the gas detector is able to signals the malfunction,
illuminating in fixed way the yellow led and activating a sound alarm with
two seconds' of intermittence.
In case of alarm the SE235K
20 seconds the buzzer emits a sound alarm and the relay activates.
LIGHTING DELAYS
The catalytic sensor presents in the
be heated for about one minute to working in a correct way and for
that reason when the detector is lighted on the green led will lighten to
indicated that the sensor is in the heating phase. During this time, all
the detection functions will be inhibited.
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English
IP65
Power supply Gas detected
230Vac-50/60Hz METHANE
230Vac-50/60Hz LPG
detector illuminating the red led and after
SE235K
gas detector, needs to
1
INSTALLATION
Attention: the installation and the out of service of the instrument
must be done by skilled personnel only.
The gas detectors SE235KM and SE235KG mus be installed in-
stalled and positioned according to all national standards for electri-
cal systems ( with danger of explosion)and safety standards.
PRODUCT POSITIONING:
The SE235KM and SE235KG must be positioned vertically with the
sensor downwards (Fig.1).
SE235KM: it must be installed 20-30 cm from the ceiling (methane is
lighter than air).
SE235KG: it must be installed 20-30 cm from the floor (LPG is heavier
than air).
INSTALLATION PROCEDURES
Unscrew the 4 screws with the aid of a screwdriver.
The box cover has to be positioned on the three form
point or on the wall, by using the screws and plugs
available.
For fixing the dowels, pierce the wall with a tip of 5
mm diameter.
ELECTRICAL CONNECTION
POWER SUPPLY
Attention: the electrical connection has to be done with an under
track cable. The gas detector have to be powered at 230Vac-50/60Hz
by the terminals L and N (Fig. 2). It has to be provided with an device,
to be disowned from the detector and the feeding net, with minimun
3 mm contact distance in accordance wit has written in the European
Standard EN 60335-1.
SE235
L
FIG. 2
230Vac-50/60Hz
ELECTRO-VALVES 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.
Positioning N.O.: proper for normally opened valves.
Positioning N.C.: proper for normally closed valves or for the
contemporaneously check of both electrovalve and an external
electrical charge.
Fig.1
NC COM NO
N
2