Gas Detector Operation; Work With Gas Alarms And System Faults - Spectros SF-ExplorIR Operation & Maintenance Manual

Gas Detector Operation

CAUTION: Operate the monitor in its horizontal position (handle facing upwards).
Tilting the monitor to a vertical position while in operationi may cause inaccurate
measurement to occur.
Turn ON the monitor as follows:
1. Lift up the shield located in front of the handle
2. Press the green power ON/OFF toggle switch.
3. Observe monitor's firmware version is briefly displayed. Current and
compliant software is at least V2.14
4. Observe the monitor starts counting down its warm-up period of
900 seconds (15 minutes).
5. At the end of warm up, take the monitor to an area than contains
fresh air and press the ENTER button to fill the monitor's internal
purge-air bag with clean, fresh air that is of the same temperature
and humidity as the area being monitored for gas. DO NOT fill the
purge-air bag in an area that is contaminated with SO
6. The time remaining on a valid calibration will be displayed ranging from
1 to 365 days.
After the purge-air bag is filled, observe the following as the monitor makes
gas measurements in the area being sampled:
• MEASURE indicates when the monitor is actively measuring the
level of SO F gas at the sampling point. The measurement cycle
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runs for 4 minutes.
• PURGE indicates when the monitor is resetting its infrared detector to a baseline of 0 ppm using the air
contained in the monitor's internal purge-air bag. The purge cycle runs for 10 seconds
The monitor will operate approximately 30 minutes before the purge-air bag needs to be
refilled. When the message "PURGE AIR EMPTY" appears, take the monitor to a clean,
fresh-air environment and then press the ENTER button to refill the bag.

Work with Gas Alarms and System Faults

ALARM (red) light turns ON if the detected gas level exceeds a programmed alarm point. An audible
alarm also sounds if the AUDALRM function is activated .Pressing the front panel
SILENCE button turns OFF the audible alarm, but the ALARM light will continue to flash for as
long as the detected gas level is above the alarm point. The audible alarm will reactivate if the gas
alarm condition is not cleared within the time period set by the SILENCE function.
FAULT (yellow) light turns ON if a fault occurs (see Fault Code list). An audible alarm
also sounds if the AUDALRM function is activated. Pressing the front panel SILENCE
button turns OFF the audible alarm, but the FAULT light continues to flash for as long as the fault is
present. The audible alarm will reactivate if the fault condition is not cleared within the time period
set by the SILENCE function. Both the FAULT light and audible alarm will automatically turn OFF
after the cause of the fault has been eliminated. A log of the last 30 fault events can be viewed using
the monitor's FAULTS function.
F gas.
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