The fan module (located in the top rear of the helmet) draws in ambient air through the filter. The filtered air is channeled inside the helmet, flows downward against the lens, while cooling the user and preventing fogging of the lens. The air flow exhausts through the face/head cover.
The default factory setting is on Low which provides 6-7 cfm of airflow. The user can adjust the airflow switch, located at the posterior underside of the helmet, between Low (6-7 cfm), Medium (7-8 cfm), and High (8-9 cfm). This adjustment allows the user to match the air flow for widely varying work environments and activity levels.
When lighted, the yellow LED indicates a low airflow condition. If it becomes lighted during use it indicates that the system is nearing a point when it won’t be able to maintain desired air flow and it is time to check the filter to see if replacement is necessary.
The three green LEDs together with the red LED provide the user general progress status of the battery charge level. Three green lit LEDs indicate approximately 75%-100% charge remaining, two green lit LEDs indicate approximately 50%-75% charge remaining, one green lit LED indicates approximately 25%-50% charge remaining – if not before, at this condition the user should be planning on recharging the battery or replacing it at the next opportunity. No green lighted LEDs and a red lighted LED indicates 0%-25% charge remaining and that it is urgent that the user replace or recharge the battery as soon as possible.
If both red and yellow LED’s are lit, both battery and filter need to be checked for change out.
In the typical healthcare environment, the yellow LED should rarely illuminate because it is not a “heavy particulate loading” environment as compared to industrial applications.
The helmets are equipped with a universal Liner/Headband with a ratchet knob to adjust for different head sizes. The headband ratchet knob adjusts for proper circumferential fit. The headband side straps have height adjustments to allow proper vertical size adjustment, and proper tilt of the helmet to ensure easy visualization of the safety LEDs in the peripheral vision.
For CAPR Systems the cover is the 2061-08 Filter Cover Cap (FCC) for Cuffs and Shrouds, the 2061-05 High Fluid Resistant Filter Cover Cap (HFR FCC) for Hoods, and the 2061-04A Hard Hat (HH) for Cuffs and Shrouds.