General Monitors 2180A - Setup and Setup Check Modes

Model 2180A
20
To Calibrate the Model 2180A:
1. Make sure the sensor is seeing clean air.
2. Enter the Calibration mode by following the same procedure for entering Calibration
Check mode. Continue to press and hold the Mode button until the CAL LED
becomes steady, approximately fifteen seconds. When the CAL LED is steady,
release the Mode button. The display shows flashing bars (--) for approximately 30 to
90 seconds. When the display changes from (--) to AC, clean air calibration is
complete. The channel is now being calibrated at clean air.
3. When the channel displays AC, apply gas to the sensor. Watch the display change
from AC to CP as the sensor detects gas. If the display does not change from AC to
CP after six minutes, the channel returns to normal operation.
4. After 2 to 5 minutes, the calibration routine is complete and the display changes from
CP to CC. If the display indicates F2 (failure to calibrate), remove the gas, wait 5
minutes then recalibrate.
5. Remove the gas and watch the display return to normal operation.
NOTE: Low and High alarms are disabled during calibration mode.
3.7.1 Aborting Calibration
Calibration can be aborted before the calibration gas has been applied.
To abort calibration:
1. Wait until AC displays. Calibration cannot be aborted when (--) is flashing.
2. Press the Mode button and hold it for approximately 5 seconds. Release the button,
after the calibration level displays.
3. The channel returns to normal operation.
3.8 Setup and Setup Check modes
The Setup Check mode allows the operator to view the selected options for the module
without allowing any changes to be made. Once this mode has been entered, the module
automatically displays each of the selected options for a short period of time and then it
returns to normal operation. The Setup mode allows the operator to change the operating
parameters by making choices for selected options.
The Setup Check & Setup modes display identical information with the following
exceptions:
• The Setup Check mode allows the user to view the operating parameters of the
channel, whereas the Setup mode allows the user to change these parameters.
• Entering the optional password is only available in Setup mode.
NOTE: The Setup and Setup Check modes cannot be entered if the channel is in alarm
or fault.