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Input for external button LAY 5-BP111
Τhe external button LAY 5-BP111 operates in
o
surrounding temperature: -25~+55 C, the rated
insulation voltage is: 600V AC (50-60Hz) and
the IP rating is: ΙΡ40. The external button can
used to mute/reset the alarm relay, Buzzer and
Red indicator as described in each section.
WARNING!!! The cable length between the
external button and the system must not
exceed three (3) meters.
System Calibration
WARNING!!! The calibration procedure of the
detector must be done by qualified personnel
that have previously read the user manual.
-The special calibration function is not available
to the user if there are faults in the system.
-For the calibration procedure using a reference
gas, the OL-11 calibration kit is required. (figure
4).
-For the calibration procedure using a reference
gas, a mixture 20% or 50% L.E.L. with oxygen
and nitrogen is used. The explosive gas
catalytic sensors do not operate without oxygen.
-It is suggested to conduct the calibration
test at least once every 12 months.
-During the calibration procedure, conduct a
clean air calibration and then a reference gas
calibration.
To calibrate the device, remove the 4 retaining
screws (figure 1) in order to gain access to the
interior.
Clean air calibration
Take the following steps:
1.Ensure that the environment is clean and does
not contain explosive gases.
2.Select using the switches S1 and S2 (figure 3)
the special function «Clean air calibration»
3. Press the button BT2 (figure 3) for more than
3 seconds until the 3 system LEDs(green,red
and yellow) start to blink with a one second rate.
4.Wait 4 seconds until the procedure is
completed. This step may last 60 seconds
more in some instances.
When the procedure is finished, the yellow led
a n d t h e b u z z e r o p e r a t e i n t e r m i t t e n t l y.
(intermittent brief activation every second).
At this point there are two instances:
-The green led is lit. This means that the clean
air calibration has finished with success. Press
and hold the button ΒΤ2 for more than 1 second
to exit calibration mode and to return the
detector to normal operation.
-The red led is lit. The clean air calibration
procedure did not finish successfully. Press and
hold the button BT2 for more than 1 second to
exit calibration mode and to return to normal
operation. You can repeat the process by
following the steps from the beginning.
Calibration using a reference gas
The steps for calibrating using a reference gas
are the following:
1. Ensure that the environment is clean an free
from explosive gases.
2.Remove the gland with the filter located on the
sensor head (figure 1).
3. In its position install the accessory OL-11-1 of
the calibration kit OL-11 (figure 4).
4. Install the part OL-11-2 on the part OL-11-1
(figure 4).
5. Select via the micro-switch S4 (figure 3) the
concentration of the reference calibration gas
that will be used (20% or 50% L.E.L.).
6. Select via the micro-switches S1 and S2
(figure 3) the special operation «Calibration with
a reference gas».
7. Press and hold the button BT2 (figure 3) for
more than 3 seconds until the 3 system LEDs
( g r e e n , r e d a n d y e l l o w ) s t a r t t o b l i n k
(intermittent blink once a second) and then
release the button.
8. Open the steady pressure valve (0.3L /
minute) of the reference gas canister.
9. Wait 3 minutes until the procedure finishes.
This step may last 60 seconds more in some
instances.
While waiting for the procedure to complete
you can cancel it at any time by pressing the
Bt2 button for more than 3 seconds.
When the procedure is finished, the yellow led
a n d t h e b u z z e r o p e r a t e i n t e r m i t t e n t l y.
(intermittent brief activation every second).
At this point close the flow valve on the gas
canister.
At this point there are two instances:
-The green led is lit. This means that the
reference gas calibration procedure has finished
with success. Press and hold the button ΒΤ2 for
more than 1 second to exit calibration mode and
to return the detector to normal operation.
-The red led is lit. The reference gas calibration
procedure did not finish successfully. Press and
hold the button BT2 for more than 1 second to
Gas
Canister
Detector
Adapter
OL-11-1
Outlet
port
figure 4
OL-11-2
Inlet
port
