MSA ALTAIR 5X Manual De Uso página 32

4 Operation
For ALTAIR 5X IR devices with combustible % Vol IR sensors, the following gas levels should not be exceeded when used
for daily Bump Tests:
• IR Butane 25 % Vol - 8 % Vol Butane Cal Check gas
• IR Propane 100 % Vol - 50 % Propane Cal Check gas
• IR Methane 100 % Vol - 20 % Methane Cal Check gas.
• IR Propane 100% LEL
1. While the device is turned ON in a clean, fresh air environment, verify that readings indicate no gas is present.
2. From the normal measure screen press the ▼ button to display "BUMP TEST?".
3. Verify the gas concentrations displayed match the Calibration Check Gas Cylinder. If they do not, adjust the values
through the Calibration Setup menu.
NOTE: Depending on the sensors installed, there could be one to five separate Bump Tests performed, each with a
different cylinder, regulator, and tubing used.
4. Attach the demand regulator (supplied in the calibration kit) to the cylinder providing the indicated gases.
5. Connect tubing (supplied in the calibration kit) to the regulator.
6. Attach the other end of tubing to the device pump inlet.
7. Press the ■ button to start the bump test:
• the progress bar advances
• the sensors respond to the gas
The message BUMP TEST PASS indicates a successful Bump Test of the sensors.
If any sensor fails the Bump Test:
• the message BUMP TEST FAIL appears
• the failed sensor is indicated.
If there are more sensors to be Bump Tested, the next sensor displays and the process repeats from Step 4.
If there are no more sensors to be Bump Tested, the tubing can be removed from the device pump inlet.
In the ALTAIR 5X IR, Bump Testing of a combustible IR sensor causes the catalytic combustible sensor to enter the
LockAlarm condition. While a device with a % Vol methane IR sensor automatically recovers from LockAlarm, propane or
butane IR devices do not. For these devices, clear the LockAlarm state by turning the device OFF, then ON while in a fresh
air environment. See 3.9 Monitoring Combustible Gases
After the Bump Test
After all installed sensors pass the Bump Test, the Psymbol displays on the MEASURE page. This PSsymbol appears on
the:
• color display in the upper feature bar
• monochrome display in the lower-right corner.
NOTE: If any sensor was not bump tested, or fails the Bump Test, the P symbol does not display.
The color display:
• temporarily shows the P symbol at each gas reading for successfully bump tested sensors
• Psymbol is then replaced by the present gas reading
○ The monochrome display does not show P symbols for individual gas readings.
○ The P symbol shows for 24 hours after the Bump Test.
○ If a sensor fails the Bump Test, calibrate the device as described in
32
for additional details.
ALTAIR 5X / ALTAIR 5X IR
4.10 Calibration
US