GT-FIRE
PORTABLE GAS DETECTOR
67816
Revision D
15
4. Cal Due enabled - if overdue, message is displayed as shown in
Figure 9: Calibration Overdue
and the user is required to acknowledge the message before continuing the warm-up.
Note: This is the default setting.
If calibration is due, the user must either:
• Press and hold YES
button for monitor warm-up to continue.
• Press and hold NO button to switch OFF.
Figure 9: Calibration Overdue
5. Cal Due enabled - if overdue, user can extend the due date by up to 31 days.
If calibration is within the “extended period”, the user must still acknowledge that Calibration
has expired.
• Press and hold YES
button for monitor warm-up to continue.
• Press and hold NO
button to reject extended period. The screen in
Figure 10: Switch Off
is displayed.
Figure 10: Switch Off
Note: If the extended period option has expired, the user’s only option will be to switch
the monitor OFF.
3.7. Service Due
Service Due date allows essential maintenance, e.g. sensor replacement, to be programmed.
The interval can be set from 1 to 36 months.
This feature can be configured to operate in five ways - similar to the options available for CAL
DUE:
1. Service Due disabled - no date is displayed.
Note: This is the default setting.
2. Service Due enabled - if overdue, the monitor is switched OFF.
