SGC and SGC Plus User’s Manual
UM SGC v3.0
7 of 15
If the self-test fails, the detector emits five short beeps and flashes before displaying “Test”. Repeat the self-test.
If the self-test fails three (3) consecutive times the detector will enter a Fail Safe mode. Please contact GCT for a
replacement detector.
During normal operation, the battery is continuously monitored. If the battery is low for more than (3) hours the
detector enters Fail Safe mode.
If the battery self-test fails (5) consecutive times the LCD will display “EO5”. In case of an EO5 screen discontinue
use and contact GCT for a replacement detector.
Along with the battery, the sensor is continuously monitored during normal operation. If a problem with the
sensor is detected, the screen will display “EO6”. In case of an EO6 screen, please discontinue use and contact GCT
for a replacement detector.
If the detector is displaying “bUP”, the detector is either due for a bump test because of a scheduled test or has
failed a bump test. Please refer to “Bump Test Interval” for more detail.
If the detector is displaying “EOL” it has reached the end of its operating life. Please discontinue use.
Alarm Types:
LOW ALARM
Audible alarm: One (1) slow beep every second
Visual alarm: One (1) slow flash every second
Vibrating alarm: One (1) slow vibration every second
HIGH ALARM and OVER LIMIT (OL) ALARM
Audible alarm: Two (2) fast beeps every second
Visual alarm: Two (2) fast flashes every second
Vibrating alarm: Two (2) fast vibrations every second
DETECTOR LIFE COUNTDOWN ALERT “EOL”
Once the detector has less than one (1) month of life
remaining the screen will switch to days remaining. When
there is less than one (1) day remaining the screen will
switch to hours remaining. Once the detector has eight
(8) hours remaining it will begin to beep, flash, and vibrate
intermittently. To end the alert push the button down. Once
the detector has reached the end of its operating life the
display will show “EOL” (End of Life).
ALARMS
When a particular gas has a Gas Reading (4) at, or above, its alarm thresholds, the Gas Identifier (5) icon will flash and
the associated Alarm Condition (1) icon will display.
During a calibration or bump test, the Calibration/Test Mode (2) icon will display when it is time to apply gas.
The Battery Charge Level (3) is displayed in a 3 bar battery icon as well as a percentage. The percentage calculation is
approximate and can be used to provide a rough estimation of the time remaining.
