SGC and SGC Plus User’s Manual
UM SGC v3.0
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DETECTOR MAINTENANCE
Bump Test Interval (bUP)
Using the GCT IR Link or GCT Manager, detectors can be programmed to alert the user if a bump test is due. This
interval can be set anywhere from 1 to 365 days. *
Note the unit default is to have no bump interval programmed
.
If a detector is due for a bump test, the Display will alternate between the months remaining and “bUP”. In addition,
the detector will emit alternating flashes (left and right) every 5 seconds. And the “test” icon will remain even after a
button push.
This alert can be cleared by either placing the detector in a Clip Dock or, if the bump interval is set, by manually
applying gas to the detector. To manually clear the alert, press the Power Button down once and wait for the GAS to
show on the display while the TEST icon flashes. The detector will wait for 45 seconds for the target gas to be applied,
or a button press to skip the bump test. If the SGC is bumped while showing GAS, then it will record as a bump test
in the event log instead of as an exposure. If no gas is applied, it will return to the normal screen and will not record
anything in the event log.
O₂
Detector Calibration
GCT recommends users of the O₂ Single Gas Clip to bump test the detector before using each day.
Single Gas Clip Oxygen (O₂) detector factory default will prompt the user to calibrate the detector every 30 days. The
user will be prompted by the screen flashing CAL, please see calibration instruction below:
Calibration Instructions
Only perform O₂ calibration in normal air (20.9% Oxygen) that
is free of hazardous gases.
1. Press and hold down the yellow button for four (4) seconds.
2. The screen will display CAL and the O
2
icon will flash in the
lower left hand side.
3. After a successful calibration, the detector will emit one (1)
beep, vibration and LED flash.
4. After an unsuccessful calibration, the detector will beep,
flash, and continue to display calibration. If after a few failed
calibrations please contact GCT customer support at 877-525-
0808.
