8
• The BIO Exhalation Filter (CS3027) shall only be used in combination with a HALO Half Mask fitted with
the BIO Exhalation Valve Cover (CS3026). It can be used with or without the BioHood.
• The BIO Exhalation Valve Cover can be cleaned or disposed of depending on the user’s environment
and/or application. For instructions on removing it see Section 20.
9. Controls and Indicators
POWER BUTTON
This button is used to switch between the three (3) operating Modes: “On”, “Standby” and “Off”
Mode.
i) Standby Mode is when the green battery indicator lights are on, the motor is not running and
there is no airflow to the mask. The respirator will automatically switch to Standby Mode within ten
(10) seconds of the user taking it off. If the respirator is in Off Mode it will switch to Standby Mode when the Power
button is pressed.
ii) On Mode is when the respirator is being worn, the motor is running and there is air flow to the mask. The motor
will start (called On Mode) when the respirator detects a change in pressure in the mask triggered by your breathing.
In On Mode you should hear the motor running and feel the airflow on your face. You can also switch to On Mode
(start the motor) from Standby Mode by pressing the Power button once.
iii) Off Mode is when the green battery indicator lights are off and the motor is not running and there is no air flow to
the mask. The respirator automatically switches into Off Mode three (3) minutes after it has been removed from the
user’s face and the sensors detect that there is no breathing.
To conserve battery life, the respirator is designed to automatically switch from On Mode to Standby then to Off
Mode when not being worn.
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