Oldham MX15, Installation And Operating Instructions Manual

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2.3. To exit while viewing a menu (ECHAP)
Simultaneously press the + and - keys and validate or don’t validate the recording of potentially
modified parameters:
- press ENTER to abort without any change
- press «+», then ENTER to exit by validating the changes.
2.4. Programming menu
A maintenance key is displayed while using the programming menu
•
This allows programming of parameters of the measuring channel such as:
- On/off: yellow DEL is blinking
- Detected gas chemical symbol (CH4 /CO, etc.)
- Measuring unit (%LEL/ppm, etc.)
- Measuring scale and decimal point (0.1/1.0/10/100/1000, etc.)
- Programming of two gas alarm thresholds (characteristics): corresponding red DEL is on
during this step
- Selecting the erasure type of gas alarms
1. manual (MAN) = if the gas concentration again becomes lower than the
preset alarm threshold, this alarm must be acknowledged manually by
pressing the acknowledgment key
2. or automatical (AUT) = if the gas concentration again becomes lower
than the preset alarm threshold, the acknowledgment is automatic.
- Timing (in minutes and seconds) of the alarm relay activation time: yellow DEL is blinking
MA
- Timing (in minutes and seconds) of the fault relay activation time: yellow DEL is on
continuously
- Timing of the central unit upon activation (relays disabled): yellow DEL is blinking and the
following icon is displayed.
-
Indicating the type of sensor used, such as:
•
Bridge: in bridge (filaments), types OLC10, CEX300, etc.
•
EHP: EXPLO (explo. 4/20mA), type OLCT10, etc.
•
InC: fire (ionic, optical, etc.)
•
O2: oxygen
•
Aut: other (toxic, etc.)
Exceeding alarm
threshold DEL
Alarm
and Buzzer Timing
AL relay
cutover
Diagram of alarm activation