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087-0020 REV E
oFF: Turns off SST function. This also clears the self test fault.
On and or 01d: Immediately turns on the SST function and it will continue to activate
every 24 hours from that point.
02d, through 28d: Programs the SST function to turn on in two days (02d) through
twenty eight (28d) and then once every two to twenty eight days; e.g. 07d will cause the
SST function to turn on in one week and then every week afterwards.
To activate the SST touch the ’’S’’ (SPAN) - Enter spot with the magnet. This will cause
the display to momentarily show “Set” and then SSt. At this time you can touch the “Z”-
Escape spot or simply allow the unit to run its test. In any event the “SSt” display will
disappear and the unit will begin applying gas. At this time both the “Ihb” and “SST”
indicator flags will activate on the display. Typically 2 – 3 minutes is required to
complete the test.
During Sensor Self Test:
1.Before turning on the gas generator, the instrument verifies that there are no existing
sensor faults and the existing gas concentration reading is below 5%FS. If the
concentration is at or above 5%FS, the instrument will hold off on the test and reattempt
the test in 1 hour and repeat it a total of four times. At this point the SST flag will flash. If
it fails after the fourth test it will wait 8 hours and attempt the same test again. It will
continue in this mode until it can successfully run a test. Toggling power on and off to
the instrument will clear this maintenance code.
2. Once the instrument has verified there is no gas present above 5%FS it turns on the
gas generator. At this time:
a. The current loop output is driven to the inhibit level
Figure 17 With SST Option
Freedom 5000 Universal Analog Toxic Gas Detector
Instruction Manual
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