Class1 Digital Air Minder - Manual (Page 4)

page 4 of 8 pages
Engineering
Standards
Name
Identifier Instructions
Engineering Standard Number
C1-102263-A
Digital Breathing Air Remaining System
Display Calibration for Gauges with bargraph displays
The calibration mode is entered by the use of a “password”.
There are two magnetic switches, one located at each side of the display.
These switches are activated with the use of a magnet.
Switch activation is visually confirmed by the toggling of the four closest bars on the display to
the switch. If they are on they will turn off, if they are off they will turn on.
If the password is correctly entered, the leftmost bar will turn on and flash. This indicates that the
display is ready to be calibrated for the low set point.
With the system adjusted to the minimum calibration point (the system should be empty or at the
lowest pressure condition) activate the left switch and then the right switch.
The rightmost bar will begin to flash, indicating the display is ready for the high set point calibration.
Adjust the system to it’s maximum operating condition. Activate the right switch followed by the left
switch.
The display will return to normal operation and indicate current system status as a percentage of
maximum capacity.
Calibration for Breathing Air Gauge installations:
Empty Cylinder (Closed Valve)
With the air bottle closed and the system purged, enterthe calibration password.
L
EFT
L
EFT
L
EFT
R
IGHT
R
IGHT
R
IGHT
The left (0%) bar will flash to indicate that you are ready to calibrate for an empty system.
Activate the left switch followed by the right switch.
The right (100%) bar will flash to indicate that the display is ready to calibrate for a full system.
Maximum Air (Full Cylinder/Open Valve)
With a full air bottle and the valve open actuate the right switch and then the left switch.
Calibration is complete.
Calibration should be accomplished using an air cylinder filled to the locally
established maximum pressure.