User's Manual

G7 EXOTECHNICAL USER MANUAL || 21
7 GAS DETECTION
7.1 BUMP TEST
What is a bump test?
A bump test will tell you if EXO’s gas sensors, lights, siren, speaker and
microphone are functional. The results of each bump test will be sent to
the Blackline Safety Cloud automatically.
Bump test schedule
The bump test schedule can be congured to match your company’s
safety policy. These changes are made in the conguration prole
on Blackline Live. To meet CSA’s LEL performance standard, you are
required to bump test before each day’s use.
The bump test process results in either a pass or a fail. Exiting the bump
test process before all sensors have been tested will result in a failed
bump test. On startup EXO will display when the next bump test is due.
By default, an overdue bump test will cause a reminder message to
display in the banner of the gas status screen. This bump test overdue
response is congurable on Blackline Live.
NOTE: Blackline recommends EXO should not exceed 30 days without
a bump test.
Gas cylinders
Sensors can be manually bump tested at the same time using one gas
cylinder with a multi-gas mixture or individually using multiple gas
cylinders. If using multiple cylinders, the manual bump test process
will need to be repeated for each cylinder. In step 2 of the bump
test process below, ensure all the gas sensors that correspond to the
attached cylinder’s gas mixture are checked. The gas concentration of
the connected gas cylinder should match the gas concentration listed
in EXO’s calibration gas conguration in Blackline Live.
NOTE: Some cartridges require you to bump test sensors in a specic
order due to gas sensor cross sensitivity. Contact your safety supervisor
to learn more.
MANUAL BUMP TEST
You will need,
 A cylinder(s) containing the appropriate gases
 A 0.5 LPM or 1 LPM xed ow regulator attached to the cylinder(s)
 Tubing tted with a quick connect coupling insert
To start
1. Ensure G7 EXO is in clean air
2. Press the OK button to enter the main menu
3. Select Gas options
4. Select Bump test
5. You will see a screen that says, “Continue with bump test?”, select Yes
Bump test process
1. EXO will run an audio/visual self test. See section 3.6 for more information.
2. A screen will prompt you to start the bump test. Ensure all the gas
sensors you wish to bump test are checked. By default EXO will
test all sensors.
3. Select Start bump
4. EXO will begin to count down from 60 seconds. Within this time window:
• Attach tubing tted with a quick connect coupling insert to EXO’s
manual calibration inlet
• Ensure the other end of the tubing is attached to the xed ow
regulator on the gas cylinder
• Turn the gas regulator on to apply the gas, keep gas owing
5. Turn the gas regulator o when prompted by EXO
6. You will be prompted to go through steps 2-5 until all sensors have
been tested. The bump test process is only considered successful
once all the sensors have been successfully tested.
7. If all sensors have been successfully tested, you will be prompted
to press the OK button to complete the bump test. This screen will
timeout after a few seconds.
8. EXO will inform you if the bump test has passed or failed and when
its next bump test is due
9. Remove the tubing from the manual calibration inlet and let EXO sit
until the gas readings stabilize. This may take a few minutes.
If you see a bump test fail message on G7 EXO’s screen,
 Check the gas and cylinder connections
 Let EXO sit until its gas readings stabilize
 Try the bump test again
 If the bump test continues to fail, contact your organization’s
safety supervisor.
Tubing connected to EXO’s manual calibration inlet
Manual calibration
inlet icon
Manual calibration
inlet icon