Maintenance
5. Refer to the regulator manufacturer
for instructions on how to start and
stop the gas flow from the cylinder.
CAUTION
Always use a gas cylinder that is within its expiration date.
4.4 Calibration
NOTE
On versions that feature the Bluetooth® link, it is preferential to use a
smartphone running the app to perform maintenance tasks.
This section describes how to perform a calibration using the setting
buttons and the internal maintenance status indicator. Before starting
calibration, make sure that the gas detector is powered on.
1. Activate inhibit mode by pressing and holding the UP button for 2
seconds. Make sure that the yellow indicator is on.
2. Connect the positive probe of a voltmeter to the positive terminal,
and connect the negative probe to the negative terminal of the
output voltage monitor.
3. Move to the next stage perform a zero calibration.
a) Move to the next step by holding the UP button for 2 seconds.
b) If there is any doubt of the quality of the atmosphere, connect a
cylinder of fresh air to the detector using the installed tube or
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