Frequently Asked Questions

The Airflow indicator supplied with the Air/Pro Max mask is a great tool to show the efficiency of the filter. It depends on how contaminated the environment is that your working in.

Low airflow indicator check Before using the respirator perform a low airflow indicator check:

1. Ensure that the HEPA filter has been installed correctly as shown in Figure 7 on page 15.
2. Activate the respirator with the on/off switch as shown in Figure 9 and perform the following test, noting the LED indicator.
3. Use your hand to block the airflow outlet as shown in Figure 10(2). If the respirator is working correctly the fan will increase in speed.
4. Within approximately 10 seconds the LED indicator will turn from GREEN to RED.
5. The RED LED indicates low airflow.
6. Remove your hand from the air inlet.
7. Switch the respirator off using the on/off switch as shown in Figure 9 to cancel the test.
8. Activate the respirator with the on/off switch once again before use.

Find out more below.

Discolouration of the filter is also a good indication that the filter needs changing.