Fault Alarms; Low Battery; Zero Fault - GMI PS500 Manual Del Usuario

3.4 FAULT ALARMS

Refer to "Table 2.1 PS500 Alarms" on page
the audible / visual indication for the following faults.

3.4.1 Low Battery

The "LOW
intermittently on the screen, when the instrument's battery
has approximately 30 minutes operating time remaining. The
audible alarm sounds every two seconds and the Red LED's
flash. Recharge or replace batteries as applicable.
The "BAT
approximately three minutes operating time remains. The
audible alarm sounds continuously and the Red LED's
illuminate constantly. After three minutes the instrument
switches off.

3.4.2 Zero Fault

Note: For instruments with a CO2 sensor fitted, refer to
section 3.4.3 for details.
A "ZERO FAULT" message and a flashing spanner symbol
appears after warm-up if the instrument has been unable to
zero all sensors correctly, as shown in Fig. 3-5.
The audible alarm sounds every two seconds and the Red
LED's flash.
It is recommended that the instrument is returned to a gas free
area. Switch the instrument off and then switch on again. If the
fault persists, return the instrument for service.
However, the instrument can still be used to detect and alarm
on the other sensors fitted.
BATTERY" message is displayed,
FAULT" message shows constantly when
ALARMS
2-12, to identify
3-7