3
The MARK V Alcovisor® Operation
This section details the preparation required to use the MARK V, and the steps for
performing a breath test.
Preparing the MARK V
Before using the MARK V, the batteries (AAA) must be installed and the unit turned on.
Installing Batteries
The MARK V is powered with 4 AAA Alkaline Batteries. The Battery Indicator is located
at the top right of the screen when the MARK V is turned on.
To insert the batteries:
1. Press and slide the battery compartment cover off.
2. Place 4 AAA batteries into position in the battery compartment.
3. Replace the cover.
When replacing the batteries, always replace ALL four batteries.
Turning On & Off
ON
Press and hold the Green ON/OFF button for 2
– 3 seconds. The display light comes
on and a self-test (automatic Blank Test) is carried out by the microprocessor. In a few
seconds, the display will read “PLEASE BLOW”.
OFF
Press and hold the ON/OFF button for 2 - 3 seconds.
Note: You can choose to have the Mark V shut off automatically after 1, 2, 5 or 10
minutes of inactivity, to conserve battery power.
Attaching a Mouthpiece
•
Remove the disposable mouthpiece from its wrapper, making sure not to touch
the end into which the subject will be blowing.
•
Insert the disposable mouthpiece into the mouthpiece opening. The mouthpiece
can be inserted from either side of the unit.
•
Ensure a secure fit.
