Service Function; Installation/Positioning; Calibration, Alarm Setting; Annual Function Control - Inficon LDM150R Mode D'emploi

6. Service Function

Pressing the "Reset/Test/Service" button (5 - Fig. 1) for 10 seconds will disengage all alarm functions
for 60 minutes. During this period, it is always possible to start a new 60-minutes period by pressing
the button for 10 seconds again. Return to active status happens automatically at the end of the
60-minutes period or may be done manually by a single press on the "Reset/Test/Service"-button.
When the service function is activated all LEDs will flash and all relays will be in normal mode position.
See Fig. 3

7. Installation/Positioning

The general rule is that the detector should be placed as close to the potential leak as possible, and at
the same time consider the gas density and any air movements in the room. The detector must also
be positioned in such a way that it is easily accessible for service. See Fig. 4 for suggestions on
suitable placement.

8. Calibration, Alarm Setting

The detectors are delivered for a specific gas type and other calibrations are normally not necessary.
The detector is named with the required gas type being detected. It is, however, very easy to change
the thresholds by using a MCT150 Monitor Calibration Tool.
The MCT150 Monitor Calibration Tool is connected to the test terminal (3 - Fig. 1).

9. Annual Function Control

Testing the system is recommended to be done at least once a year. A basic function test can be
made using MCT150 Monitor Calibration Tool.

10. Automatic/Manual Alarm Reset

Is managed by DIP switch (1 - Fig. 1) n
manual reset by pressing the "Reset/Test/Service" button (located under the cover).

11. Alarm Time Delay (T1)

Is managed by DIP-switches (1- Fig. 1) n
n 1 n 2
o o
ON ON No alarm delay
OFF ON (1) minutes alarm delay
ON OFF (10) minutes alarm delay
OFF OFF (30) minutes alarm delay

12. Self-Test Function

Press the "Reset/Test/Service" button (5 - Fig. 1) for 5 seconds and the test program will start and go
through all LED functions and all relay functions in five seconds intervals. See Fig. 2.
9/44
3 where "ON" means automatic reset and "OFF" means
o
1 and n 2:
o o
Alarm delay
743-203-xxx LDM150R for hydrocarbon gases Operating Manual 200305
INFICON