To Clear An Alarm; Response Check; Measuring Gas Concentrations; Combustible Gases (% Lel) (Figure 3-4) - MSA Orion plus Manual De Operación

To Clear an Alarm

1. Correct any flow blockage.
2. Press the RESET button.
• The Pump will now restart.

Response Check

The gas response check is simple and should complete in about one
minute.
• Perform this response check before each day's use.
1. Turn ON the Orion plus Multigas Detector in clean, fresh air.
2. Verify that readings indicate no gas is present.
3. Attach the regulator to the cylinder.
4. Connect the tubing to the regulator.
5. Open the regulator valve.
• The flow rate of the regulator is 0.25 lpm.
6. Attach the other end of tubing to the Orion plus pump inlet fitting.
• The reading on the Orion plus Multigas Detector display should
be within the limits stated on the calibration cylinder or limits
determined by your company.
• If necessary, change the cylinder to introduce other calibration
gases.
• The Orion plus Multigas Detector also offers an option for a 'silent'
response check with no audible and visual alarms triggered. For
the 'silent' check, enter the 'Setup' mode (see Chapter 4,"Changing
Instrument Settings") and, in the 'Calibration' menu, select the
'Calibration check' option.

Measuring Gas Concentrations

Combustible gases (% LEL) (FIGURE 3-4)

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